diff options
Diffstat (limited to 'fs/xfs/linux-2.6')
26 files changed, 1014 insertions, 1466 deletions
diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/linux-2.6/xfs_acl.c index 9f769b5b38f..b2771862fd3 100644 --- a/fs/xfs/linux-2.6/xfs_acl.c +++ b/fs/xfs/linux-2.6/xfs_acl.c @@ -225,7 +225,7 @@ xfs_check_acl(struct inode *inode, int mask) struct posix_acl *acl; int error = -EAGAIN; - xfs_itrace_entry(ip); + trace_xfs_check_acl(ip); /* * If there is no attribute fork no ACL exists on this inode and diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c index 34640d6dbdc..c9af48fffcd 100644 --- a/fs/xfs/linux-2.6/xfs_aops.c +++ b/fs/xfs/linux-2.6/xfs_aops.c @@ -21,19 +21,12 @@ #include "xfs_inum.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_trans.h" -#include "xfs_dmapi.h" #include "xfs_mount.h" #include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_dir2_sf.h" -#include "xfs_attr_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_alloc.h" -#include "xfs_btree.h" #include "xfs_error.h" #include "xfs_rw.h" #include "xfs_iomap.h" @@ -92,18 +85,15 @@ void xfs_count_page_state( struct page *page, int *delalloc, - int *unmapped, int *unwritten) { struct buffer_head *bh, *head; - *delalloc = *unmapped = *unwritten = 0; + *delalloc = *unwritten = 0; bh = head = page_buffers(page); do { - if (buffer_uptodate(bh) && !buffer_mapped(bh)) - (*unmapped) = 1; - else if (buffer_unwritten(bh)) + if (buffer_unwritten(bh)) (*unwritten) = 1; else if (buffer_delay(bh)) (*delalloc) = 1; @@ -212,23 +202,17 @@ xfs_setfilesize( } /* - * Schedule IO completion handling on a xfsdatad if this was - * the final hold on this ioend. If we are asked to wait, - * flush the workqueue. + * Schedule IO completion handling on the final put of an ioend. */ STATIC void xfs_finish_ioend( - xfs_ioend_t *ioend, - int wait) + struct xfs_ioend *ioend) { if (atomic_dec_and_test(&ioend->io_remaining)) { - struct workqueue_struct *wq; - - wq = (ioend->io_type == IO_UNWRITTEN) ? - xfsconvertd_workqueue : xfsdatad_workqueue; - queue_work(wq, &ioend->io_work); - if (wait) - flush_workqueue(wq); + if (ioend->io_type == IO_UNWRITTEN) + queue_work(xfsconvertd_workqueue, &ioend->io_work); + else + queue_work(xfsdatad_workqueue, &ioend->io_work); } } @@ -272,11 +256,25 @@ xfs_end_io( */ if (error == EAGAIN) { atomic_inc(&ioend->io_remaining); - xfs_finish_ioend(ioend, 0); + xfs_finish_ioend(ioend); /* ensure we don't spin on blocked ioends */ delay(1); - } else + } else { + if (ioend->io_iocb) + aio_complete(ioend->io_iocb, ioend->io_result, 0); xfs_destroy_ioend(ioend); + } +} + +/* + * Call IO completion handling in caller context on the final put of an ioend. + */ +STATIC void +xfs_finish_ioend_sync( + struct xfs_ioend *ioend) +{ + if (atomic_dec_and_test(&ioend->io_remaining)) + xfs_end_io(&ioend->io_work); } /* @@ -309,6 +307,8 @@ xfs_alloc_ioend( atomic_inc(&XFS_I(ioend->io_inode)->i_iocount); ioend->io_offset = 0; ioend->io_size = 0; + ioend->io_iocb = NULL; + ioend->io_result = 0; INIT_WORK(&ioend->io_work, xfs_end_io); return ioend; @@ -358,7 +358,7 @@ xfs_end_bio( bio->bi_end_io = NULL; bio_put(bio); - xfs_finish_ioend(ioend, 0); + xfs_finish_ioend(ioend); } STATIC void @@ -500,7 +500,7 @@ xfs_submit_ioend( } if (bio) xfs_submit_ioend_bio(wbc, ioend, bio); - xfs_finish_ioend(ioend, 0); + xfs_finish_ioend(ioend); } while ((ioend = next) != NULL); } @@ -614,31 +614,30 @@ xfs_map_at_offset( STATIC unsigned int xfs_probe_page( struct page *page, - unsigned int pg_offset, - int mapped) + unsigned int pg_offset) { + struct buffer_head *bh, *head; int ret = 0; if (PageWriteback(page)) return 0; + if (!PageDirty(page)) + return 0; + if (!page->mapping) + return 0; + if (!page_has_buffers(page)) + return 0; - if (page->mapping && PageDirty(page)) { - if (page_has_buffers(page)) { - struct buffer_head *bh, *head; - - bh = head = page_buffers(page); - do { - if (!buffer_uptodate(bh)) - break; - if (mapped != buffer_mapped(bh)) - break; - ret += bh->b_size; - if (ret >= pg_offset) - break; - } while ((bh = bh->b_this_page) != head); - } else - ret = mapped ? 0 : PAGE_CACHE_SIZE; - } + bh = head = page_buffers(page); + do { + if (!buffer_uptodate(bh)) + break; + if (!buffer_mapped(bh)) + break; + ret += bh->b_size; + if (ret >= pg_offset) + break; + } while ((bh = bh->b_this_page) != head); return ret; } @@ -648,8 +647,7 @@ xfs_probe_cluster( struct inode *inode, struct page *startpage, struct buffer_head *bh, - struct buffer_head *head, - int mapped) + struct buffer_head *head) { struct pagevec pvec; pgoff_t tindex, tlast, tloff; @@ -658,7 +656,7 @@ xfs_probe_cluster( /* First sum forwards in this page */ do { - if (!buffer_uptodate(bh) || (mapped != buffer_mapped(bh))) + if (!buffer_uptodate(bh) || !buffer_mapped(bh)) return total; total += bh->b_size; } while ((bh = bh->b_this_page) != head); @@ -692,7 +690,7 @@ xfs_probe_cluster( pg_offset = PAGE_CACHE_SIZE; if (page->index == tindex && trylock_page(page)) { - pg_len = xfs_probe_page(page, pg_offset, mapped); + pg_len = xfs_probe_page(page, pg_offset); unlock_page(page); } @@ -761,7 +759,6 @@ xfs_convert_page( struct xfs_bmbt_irec *imap, xfs_ioend_t **ioendp, struct writeback_control *wbc, - int startio, int all_bh) { struct buffer_head *bh, *head; @@ -832,19 +829,14 @@ xfs_convert_page( ASSERT(imap->br_startblock != DELAYSTARTBLOCK); xfs_map_at_offset(inode, bh, imap, offset); - if (startio) { - xfs_add_to_ioend(inode, bh, offset, - type, ioendp, done); - } else { - set_buffer_dirty(bh); - unlock_buffer(bh); - mark_buffer_dirty(bh); - } + xfs_add_to_ioend(inode, bh, offset, type, + ioendp, done); + page_dirty--; count++; } else { type = IO_NEW; - if (buffer_mapped(bh) && all_bh && startio) { + if (buffer_mapped(bh) && all_bh) { lock_buffer(bh); xfs_add_to_ioend(inode, bh, offset, type, ioendp, done); @@ -859,14 +851,12 @@ xfs_convert_page( if (uptodate && bh == head) SetPageUptodate(page); - if (startio) { - if (count) { - wbc->nr_to_write--; - if (wbc->nr_to_write <= 0) - done = 1; - } - xfs_start_page_writeback(page, !page_dirty, count); + if (count) { + if (--wbc->nr_to_write <= 0 && + wbc->sync_mode == WB_SYNC_NONE) + done = 1; } + xfs_start_page_writeback(page, !page_dirty, count); return done; fail_unlock_page: @@ -886,7 +876,6 @@ xfs_cluster_write( struct xfs_bmbt_irec *imap, xfs_ioend_t **ioendp, struct writeback_control *wbc, - int startio, int all_bh, pgoff_t tlast) { @@ -902,7 +891,7 @@ xfs_cluster_write( for (i = 0; i < pagevec_count(&pvec); i++) { done = xfs_convert_page(inode, pvec.pages[i], tindex++, - imap, ioendp, wbc, startio, all_bh); + imap, ioendp, wbc, all_bh); if (done) break; } @@ -981,7 +970,7 @@ xfs_aops_discard_page( */ error = xfs_bmapi(NULL, ip, offset_fsb, 1, XFS_BMAPI_ENTIRE, NULL, 0, &imap, - &nimaps, NULL, NULL); + &nimaps, NULL); if (error) { /* something screwed, just bail */ @@ -1009,7 +998,7 @@ xfs_aops_discard_page( */ xfs_bmap_init(&flist, &firstblock); error = xfs_bunmapi(NULL, ip, offset_fsb, 1, 0, 1, &firstblock, - &flist, NULL, &done); + &flist, &done); ASSERT(!flist.xbf_count && !flist.xbf_first); if (error) { @@ -1032,50 +1021,66 @@ out_invalidate: } /* - * Calling this without startio set means we are being asked to make a dirty - * page ready for freeing it's buffers. When called with startio set then - * we are coming from writepage. + * Write out a dirty page. + * + * For delalloc space on the page we need to allocate space and flush it. + * For unwritten space on the page we need to start the conversion to + * regular allocated space. + * For any other dirty buffer heads on the page we should flush them. * - * When called with startio set it is important that we write the WHOLE - * page if possible. - * The bh->b_state's cannot know if any of the blocks or which block for - * that matter are dirty due to mmap writes, and therefore bh uptodate is - * only valid if the page itself isn't completely uptodate. Some layers - * may clear the page dirty flag prior to calling write page, under the - * assumption the entire page will be written out; by not writing out the - * whole page the page can be reused before all valid dirty data is - * written out. Note: in the case of a page that has been dirty'd by - * mapwrite and but partially setup by block_prepare_write the - * bh->b_states's will not agree and only ones setup by BPW/BCW will have - * valid state, thus the whole page must be written out thing. + * If we detect that a transaction would be required to flush the page, we + * have to check the process flags first, if we are already in a transaction + * or disk I/O during allocations is off, we need to fail the writepage and + * redirty the page. */ - STATIC int -xfs_page_state_convert( - struct inode *inode, - struct page *page, - struct writeback_control *wbc, - int startio, - int unmapped) /* also implies page uptodate */ +xfs_vm_writepage( + struct page *page, + struct writeback_control *wbc) { + struct inode *inode = page->mapping->host; + int delalloc, unwritten; struct buffer_head *bh, *head; struct xfs_bmbt_irec imap; xfs_ioend_t *ioend = NULL, *iohead = NULL; loff_t offset; - unsigned long p_offset = 0; unsigned int type; __uint64_t end_offset; pgoff_t end_index, last_index; ssize_t size, len; int flags, err, imap_valid = 0, uptodate = 1; - int page_dirty, count = 0; - int trylock = 0; - int all_bh = unmapped; + int count = 0; + int all_bh = 0; - if (startio) { - if (wbc->sync_mode == WB_SYNC_NONE && wbc->nonblocking) - trylock |= BMAPI_TRYLOCK; - } + trace_xfs_writepage(inode, page, 0); + + ASSERT(page_has_buffers(page)); + + /* + * Refuse to write the page out if we are called from reclaim context. + * + * This avoids stack overflows when called from deeply used stacks in + * random callers for direct reclaim or memcg reclaim. We explicitly + * allow reclaim from kswapd as the stack usage there is relatively low. + * + * This should really be done by the core VM, but until that happens + * filesystems like XFS, btrfs and ext4 have to take care of this + * by themselves. + */ + if ((current->flags & (PF_MEMALLOC|PF_KSWAPD)) == PF_MEMALLOC) + goto redirty; + + /* + * We need a transaction if there are delalloc or unwritten buffers + * on the page. + * + * If we need a transaction and the process flags say we are already + * in a transaction, or no IO is allowed then mark the page dirty + * again and leave the page as is. + */ + xfs_count_page_state(page, &delalloc, &unwritten); + if ((current->flags & PF_FSTRANS) && (delalloc || unwritten)) + goto redirty; /* Is this page beyond the end of the file? */ offset = i_size_read(inode); @@ -1084,50 +1089,33 @@ xfs_page_state_convert( if (page->index >= end_index) { if ((page->index >= end_index + 1) || !(i_size_read(inode) & (PAGE_CACHE_SIZE - 1))) { - if (startio) - unlock_page(page); + unlock_page(page); return 0; } } - /* - * page_dirty is initially a count of buffers on the page before - * EOF and is decremented as we move each into a cleanable state. - * - * Derivation: - * - * End offset is the highest offset that this page should represent. - * If we are on the last page, (end_offset & (PAGE_CACHE_SIZE - 1)) - * will evaluate non-zero and be less than PAGE_CACHE_SIZE and - * hence give us the correct page_dirty count. On any other page, - * it will be zero and in that case we need page_dirty to be the - * count of buffers on the page. - */ end_offset = min_t(unsigned long long, - (xfs_off_t)(page->index + 1) << PAGE_CACHE_SHIFT, offset); + (xfs_off_t)(page->index + 1) << PAGE_CACHE_SHIFT, + offset); len = 1 << inode->i_blkbits; - p_offset = min_t(unsigned long, end_offset & (PAGE_CACHE_SIZE - 1), - PAGE_CACHE_SIZE); - p_offset = p_offset ? roundup(p_offset, len) : PAGE_CACHE_SIZE; - page_dirty = p_offset / len; bh = head = page_buffers(page); offset = page_offset(page); flags = BMAPI_READ; type = IO_NEW; - /* TODO: cleanup count and page_dirty */ - do { if (offset >= end_offset) break; if (!buffer_uptodate(bh)) uptodate = 0; - if (!(PageUptodate(page) || buffer_uptodate(bh)) && !startio) { - /* - * the iomap is actually still valid, but the ioend - * isn't. shouldn't happen too often. - */ + + /* + * A hole may still be marked uptodate because discard_buffer + * leaves the flag set. + */ + if (!buffer_mapped(bh) && buffer_uptodate(bh)) { + ASSERT(!buffer_dirty(bh)); imap_valid = 0; continue; } @@ -1135,19 +1123,7 @@ xfs_page_state_convert( if (imap_valid) imap_valid = xfs_imap_valid(inode, &imap, offset); - /* - * First case, map an unwritten extent and prepare for - * extent state conversion transaction on completion. - * - * Second case, allocate space for a delalloc buffer. - * We can return EAGAIN here in the release page case. - * - * Third case, an unmapped buffer was found, and we are - * in a path where we need to write the whole page out. - */ - if (buffer_unwritten(bh) || buffer_delay(bh) || - ((buffer_uptodate(bh) || PageUptodate(page)) && - !buffer_mapped(bh) && (unmapped || startio))) { + if (buffer_unwritten(bh) || buffer_delay(bh)) { int new_ioend = 0; /* @@ -1161,15 +1137,15 @@ xfs_page_state_convert( flags = BMAPI_WRITE | BMAPI_IGNSTATE; } else if (buffer_delay(bh)) { type = IO_DELAY; - flags = BMAPI_ALLOCATE | trylock; - } else { - type = IO_NEW; - flags = BMAPI_WRITE | BMAPI_MMAP; + flags = BMAPI_ALLOCATE; + + if (wbc->sync_mode == WB_SYNC_NONE) + flags |= BMAPI_TRYLOCK; } if (!imap_valid) { /* - * if we didn't have a valid mapping then we + * If we didn't have a valid mapping then we * need to ensure that we put the new mapping * in a new ioend structure. This needs to be * done to ensure that the ioends correctly @@ -1177,14 +1153,7 @@ xfs_page_state_convert( * for unwritten extent conversion. */ new_ioend = 1; - if (type == IO_NEW) { - size = xfs_probe_cluster(inode, - page, bh, head, 0); - } else { - size = len; - } - - err = xfs_map_blocks(inode, offset, size, + err = xfs_map_blocks(inode, offset, len, &imap, flags); if (err) goto error; @@ -1193,19 +1162,11 @@ xfs_page_state_convert( } if (imap_valid) { xfs_map_at_offset(inode, bh, &imap, offset); - if (startio) { - xfs_add_to_ioend(inode, bh, offset, - type, &ioend, - new_ioend); - } else { - set_buffer_dirty(bh); - unlock_buffer(bh); - mark_buffer_dirty(bh); - } - page_dirty--; + xfs_add_to_ioend(inode, bh, offset, type, + &ioend, new_ioend); count++; } - } else if (buffer_uptodate(bh) && startio) { + } else if (buffer_uptodate(bh)) { /* * we got here because the buffer is already mapped. * That means it must already have extents allocated @@ -1213,8 +1174,7 @@ xfs_page_state_convert( */ if (!imap_valid || flags != BMAPI_READ) { flags = BMAPI_READ; - size = xfs_probe_cluster(inode, page, bh, - head, 1); + size = xfs_probe_cluster(inode, page, bh, head); err = xfs_map_blocks(inode, offset, size, &imap, flags); if (err) @@ -1233,18 +1193,16 @@ xfs_page_state_convert( */ type = IO_NEW; if (trylock_buffer(bh)) { - ASSERT(buffer_mapped(bh)); if (imap_valid) all_bh = 1; xfs_add_to_ioend(inode, bh, offset, type, &ioend, !imap_valid); - page_dirty--; count++; } else { imap_valid = 0; } - } else if ((buffer_uptodate(bh) || PageUptodate(page)) && - (unmapped || startio)) { + } else if (PageUptodate(page)) { + ASSERT(buffer_mapped(bh)); imap_valid = 0; } @@ -1256,8 +1214,7 @@ xfs_page_state_convert( if (uptodate && bh == head) SetPageUptodate(page); - if (startio) - xfs_start_page_writeback(page, 1, count); + xfs_start_page_writeback(page, 1, count); if (ioend && imap_valid) { xfs_off_t end_index; @@ -1275,131 +1232,30 @@ xfs_page_state_convert( end_index = last_index; xfs_cluster_write(inode, page->index + 1, &imap, &ioend, - wbc, startio, all_bh, end_index); + wbc, all_bh, end_index); } if (iohead) xfs_submit_ioend(wbc, iohead); - return page_dirty; + return 0; error: if (iohead) xfs_cancel_ioend(iohead); - /* - * If it's delalloc and we have nowhere to put it, - * throw it away, unless the lower layers told - * us to try again. - */ - if (err != -EAGAIN) { - if (!unmapped) - xfs_aops_discard_page(page); - ClearPageUptodate(page); - } - return err; -} + if (err == -EAGAIN) + goto redirty; -/* - * writepage: Called from one of two places: - * - * 1. we are flushing a delalloc buffer head. - * - * 2. we are writing out a dirty page. Typically the page dirty - * state is cleared before we get here. In this case is it - * conceivable we have no buffer heads. - * - * For delalloc space on the page we need to allocate space and - * flush it. For unmapped buffer heads on the page we should - * allocate space if the page is uptodate. For any other dirty - * buffer heads on the page we should flush them. - * - * If we detect that a transaction would be required to flush - * the page, we have to check the process flags first, if we - * are already in a transaction or disk I/O during allocations - * is off, we need to fail the writepage and redirty the page. - */ - -STATIC int -xfs_vm_writepage( - struct page *page, - struct writeback_control *wbc) -{ - int error; - int need_trans; - int delalloc, unmapped, unwritten; - struct inode *inode = page->mapping->host; - - trace_xfs_writepage(inode, page, 0); - - /* - * Refuse to write the page out if we are called from reclaim context. - * - * This is primarily to avoid stack overflows when called from deep - * used stacks in random callers for direct reclaim, but disabling - * reclaim for kswap is a nice side-effect as kswapd causes rather - * suboptimal I/O patters, too. - * - * This should really be done by the core VM, but until that happens - * filesystems like XFS, btrfs and ext4 have to take care of this - * by themselves. - */ - if (current->flags & PF_MEMALLOC) - goto out_fail; - - /* - * We need a transaction if: - * 1. There are delalloc buffers on the page - * 2. The page is uptodate and we have unmapped buffers - * 3. The page is uptodate and we have no buffers - * 4. There are unwritten buffers on the page - */ - - if (!page_has_buffers(page)) { - unmapped = 1; - need_trans = 1; - } else { - xfs_count_page_state(page, &delalloc, &unmapped, &unwritten); - if (!PageUptodate(page)) - unmapped = 0; - need_trans = delalloc + unmapped + unwritten; - } - - /* - * If we need a transaction and the process flags say - * we are already in a transaction, or no IO is allowed - * then mark the page dirty again and leave the page - * as is. - */ - if (current_test_flags(PF_FSTRANS) && need_trans) - goto out_fail; - - /* - * Delay hooking up buffer heads until we have - * made our go/no-go decision. - */ - if (!page_has_buffers(page)) - create_empty_buffers(page, 1 << inode->i_blkbits, 0); - - /* - * Convert delayed allocate, unwritten or unmapped space - * to real space and flush out to disk. - */ - error = xfs_page_state_convert(inode, page, wbc, 1, unmapped); - if (error == -EAGAIN) - goto out_fail; - if (unlikely(error < 0)) - goto out_unlock; - - return 0; + xfs_aops_discard_page(page); + ClearPageUptodate(page); + unlock_page(page); + return err; -out_fail: +redirty: redirty_page_for_writepage(wbc, page); unlock_page(page); return 0; -out_unlock: - unlock_page(page); - return error; } STATIC int @@ -1413,65 +1269,27 @@ xfs_vm_writepages( /* * Called to move a page into cleanable state - and from there - * to be released. Possibly the page is already clean. We always + * to be released. The page should already be clean. We always * have buffer heads in this call. * - * Returns 0 if the page is ok to release, 1 otherwise. - * - * Possible scenarios are: - * - * 1. We are being called to release a page which has been written - * to via regular I/O. buffer heads will be dirty and possibly - * delalloc. If no delalloc buffer heads in this case then we - * can just return zero. - * - * 2. We are called to release a page which has been written via - * mmap, all we need to do is ensure there is no delalloc - * state in the buffer heads, if not we can let the caller - * free them and we should come back later via writepage. + * Returns 1 if the page is ok to release, 0 otherwise. */ STATIC int xfs_vm_releasepage( struct page *page, gfp_t gfp_mask) { - struct inode *inode = page->mapping->host; - int dirty, delalloc, unmapped, unwritten; - struct writeback_control wbc = { - .sync_mode = WB_SYNC_ALL, - .nr_to_write = 1, - }; + int delalloc, unwritten; - trace_xfs_releasepage(inode, page, 0); + trace_xfs_releasepage(page->mapping->host, page, 0); - if (!page_has_buffers(page)) - return 0; - - xfs_count_page_state(page, &delalloc, &unmapped, &unwritten); - if (!delalloc && !unwritten) - goto free_buffers; + xfs_count_page_state(page, &delalloc, &unwritten); - if (!(gfp_mask & __GFP_FS)) + if (WARN_ON(delalloc)) return 0; - - /* If we are already inside a transaction or the thread cannot - * do I/O, we cannot release this page. - */ - if (current_test_flags(PF_FSTRANS)) + if (WARN_ON(unwritten)) return 0; - /* - * Convert delalloc space to real space, do not flush the - * data out to disk, that will be done by the caller. - * Never need to allocate space here - we will always - * come back to writepage in that case. - */ - dirty = xfs_page_state_convert(inode, page, &wbc, 0, 0); - if (dirty == 0 && !unwritten) - goto free_buffers; - return 0; - -free_buffers: return try_to_free_buffers(page); } @@ -1481,9 +1299,9 @@ __xfs_get_blocks( sector_t iblock, struct buffer_head *bh_result, int create, - int direct, - bmapi_flags_t flags) + int direct) { + int flags = create ? BMAPI_WRITE : BMAPI_READ; struct xfs_bmbt_irec imap; xfs_off_t offset; ssize_t size; @@ -1498,8 +1316,11 @@ __xfs_get_blocks( if (!create && direct && offset >= i_size_read(inode)) return 0; - error = xfs_iomap(XFS_I(inode), offset, size, - create ? flags : BMAPI_READ, &imap, &nimap, &new); + if (direct && create) + flags |= BMAPI_DIRECT; + + error = xfs_iomap(XFS_I(inode), offset, size, flags, &imap, &nimap, + &new); if (error) return -error; if (nimap == 0) @@ -1579,8 +1400,7 @@ xfs_get_blocks( struct buffer_head *bh_result, int create) { - return __xfs_get_blocks(inode, iblock, - bh_result, create, 0, BMAPI_WRITE); + return __xfs_get_blocks(inode, iblock, bh_result, create, 0); } STATIC int @@ -1590,61 +1410,59 @@ xfs_get_blocks_direct( struct buffer_head *bh_result, int create) { - return __xfs_get_blocks(inode, iblock, - bh_result, create, 1, BMAPI_WRITE|BMAPI_DIRECT); + return __xfs_get_blocks(inode, iblock, bh_result, create, 1); } +/* + * Complete a direct I/O write request. + * + * If the private argument is non-NULL __xfs_get_blocks signals us that we + * need to issue a transaction to convert the range from unwritten to written + * extents. In case this is regular synchronous I/O we just call xfs_end_io + * to do this and we are done. But in case this was a successfull AIO + * request this handler is called from interrupt context, from which we + * can't start transactions. In that case offload the I/O completion to + * the workqueues we also use for buffered I/O completion. + */ STATIC void -xfs_end_io_direct( - struct kiocb *iocb, - loff_t offset, - ssize_t size, - void *private) +xfs_end_io_direct_write( + struct kiocb *iocb, + loff_t offset, + ssize_t size, + void *private, + int ret, + bool is_async) { - xfs_ioend_t *ioend = iocb->private; + struct xfs_ioend *ioend = iocb->private; /* - * Non-NULL private data means we need to issue a transaction to - * convert a range from unwritten to written extents. This needs - * to happen from process context but aio+dio I/O completion - * happens from irq context so we need to defer it to a workqueue. - * This is not necessary for synchronous direct I/O, but we do - * it anyway to keep the code uniform and simpler. - * - * Well, if only it were that simple. Because synchronous direct I/O - * requires extent conversion to occur *before* we return to userspace, - * we have to wait for extent conversion to complete. Look at the - * iocb that has been passed to us to determine if this is AIO or - * not. If it is synchronous, tell xfs_finish_ioend() to kick the - * workqueue and wait for it to complete. - * - * The core direct I/O code might be changed to always call the - * completion handler in the future, in which case all this can - * go away. + * blockdev_direct_IO can return an error even after the I/O + * completion handler was called. Thus we need to protect + * against double-freeing. */ + iocb->private = NULL; + ioend->io_offset = offset; ioend->io_size = size; - if (ioend->io_type == IO_READ) { - xfs_finish_ioend(ioend, 0); - } else if (private && size > 0) { - xfs_finish_ioend(ioend, is_sync_kiocb(iocb)); - } else { + if (private && size > 0) + ioend->io_type = IO_UNWRITTEN; + + if (is_async) { /* - * A direct I/O write ioend starts it's life in unwritten - * state in case they map an unwritten extent. This write - * didn't map an unwritten extent so switch it's completion - * handler. + * If we are converting an unwritten extent we need to delay + * the AIO completion until after the unwrittent extent + * conversion has completed, otherwise do it ASAP. */ - ioend->io_type = IO_NEW; - xfs_finish_ioend(ioend, 0); + if (ioend->io_type == IO_UNWRITTEN) { + ioend->io_iocb = iocb; + ioend->io_result = ret; + } else { + aio_complete(iocb, ret, 0); + } + xfs_finish_ioend(ioend); + } else { + xfs_finish_ioend_sync(ioend); } - - /* - * blockdev_direct_IO can return an error even after the I/O - * completion handler was called. Thus we need to protect - * against double-freeing. - */ - iocb->private = NULL; } STATIC ssize_t @@ -1655,26 +1473,45 @@ xfs_vm_direct_IO( loff_t offset, unsigned long nr_segs) { - struct file *file = iocb->ki_filp; - struct inode *inode = file->f_mapping->host; - struct block_device *bdev; - ssize_t ret; - - bdev = xfs_find_bdev_for_inode(inode); + struct inode *inode = iocb->ki_filp->f_mapping->host; + struct block_device *bdev = xfs_find_bdev_for_inode(inode); + ssize_t ret; - iocb->private = xfs_alloc_ioend(inode, rw == WRITE ? - IO_UNWRITTEN : IO_READ); + if (rw & WRITE) { + iocb->private = xfs_alloc_ioend(inode, IO_NEW); - ret = blockdev_direct_IO_no_locking(rw, iocb, inode, bdev, iov, + ret = __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset, nr_segs, xfs_get_blocks_direct, - xfs_end_io_direct); + xfs_end_io_direct_write, NULL, 0); + if (ret != -EIOCBQUEUED && iocb->private) + xfs_destroy_ioend(iocb->private); + } else { + ret = __blockdev_direct_IO(rw, iocb, inode, bdev, iov, + offset, nr_segs, + xfs_get_blocks_direct, + NULL, NULL, 0); + } - if (unlikely(ret != -EIOCBQUEUED && iocb->private)) - xfs_destroy_ioend(iocb->private); return ret; } +STATIC void +xfs_vm_write_failed( + struct address_space *mapping, + loff_t to) +{ + struct inode *inode = mapping->host; + + if (to > inode->i_size) { + struct iattr ia = { + .ia_valid = ATTR_SIZE | ATTR_FORCE, + .ia_size = inode->i_size, + }; + xfs_setattr(XFS_I(inode), &ia, XFS_ATTR_NOLOCK); + } +} + STATIC int xfs_vm_write_begin( struct file *file, @@ -1685,9 +1522,31 @@ xfs_vm_write_begin( struct page **pagep, void **fsdata) { - *pagep = NULL; - return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata, - xfs_get_blocks); + int ret; + + ret = block_write_begin(mapping, pos, len, flags | AOP_FLAG_NOFS, + pagep, xfs_get_blocks); + if (unlikely(ret)) + xfs_vm_write_failed(mapping, pos + len); + return ret; +} + +STATIC int +xfs_vm_write_end( + struct file *file, + struct address_space *mapping, + loff_t pos, + unsigned len, + unsigned copied, + struct page *page, + void *fsdata) +{ + int ret; + + ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); + if (unlikely(ret < len)) + xfs_vm_write_failed(mapping, pos + len); + return ret; } STATIC sector_t @@ -1698,7 +1557,7 @@ xfs_vm_bmap( struct inode *inode = (struct inode *)mapping->host; struct xfs_inode *ip = XFS_I(inode); - xfs_itrace_entry(XFS_I(inode)); + trace_xfs_vm_bmap(XFS_I(inode)); xfs_ilock(ip, XFS_IOLOCK_SHARED); xfs_flush_pages(ip, (xfs_off_t)0, -1, 0, FI_REMAPF); xfs_iunlock(ip, XFS_IOLOCK_SHARED); @@ -1732,7 +1591,7 @@ const struct address_space_operations xfs_address_space_operations = { .releasepage = xfs_vm_releasepage, .invalidatepage = xfs_vm_invalidatepage, .write_begin = xfs_vm_write_begin, - .write_end = generic_write_end, + .write_end = xfs_vm_write_end, .bmap = xfs_vm_bmap, .direct_IO = xfs_vm_direct_IO, .migratepage = buffer_migrate_page, diff --git a/fs/xfs/linux-2.6/xfs_aops.h b/fs/xfs/linux-2.6/xfs_aops.h index 4cfc6ea87df..c5057fb6237 100644 --- a/fs/xfs/linux-2.6/xfs_aops.h +++ b/fs/xfs/linux-2.6/xfs_aops.h @@ -37,6 +37,8 @@ typedef struct xfs_ioend { size_t io_size; /* size of the extent */ xfs_off_t io_offset; /* offset in the file */ struct work_struct io_work; /* xfsdatad work queue */ + struct kiocb *io_iocb; + int io_result; } xfs_ioend_t; extern const struct address_space_operations xfs_address_space_operations; @@ -45,6 +47,6 @@ extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int); extern void xfs_ioend_init(void); extern void xfs_ioend_wait(struct xfs_inode *); -extern void xfs_count_page_state(struct page *, int *, int *, int *); +extern void xfs_count_page_state(struct page *, int *, int *); #endif /* __XFS_AOPS_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 2ee3f7a6016..63fd2c07cb5 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -39,7 +39,6 @@ #include "xfs_inum.h" #include "xfs_log.h" #include "xfs_ag.h" -#include "xfs_dmapi.h" #include "xfs_mount.h" #include "xfs_trace.h" @@ -189,8 +188,8 @@ _xfs_buf_initialize( atomic_set(&bp->b_hold, 1); init_completion(&bp->b_iowait); INIT_LIST_HEAD(&bp->b_list); - INIT_LIST_HEAD(&bp->b_hash_list); - init_MUTEX_LOCKED(&bp->b_sema); /* held, no waiters */ + RB_CLEAR_NODE(&bp->b_rbnode); + sema_init(&bp->b_sema, 0); /* held, no waiters */ XB_SET_OWNER(bp); bp->b_target = target; bp->b_file_offset = range_base; @@ -263,8 +262,6 @@ xfs_buf_free( { trace_xfs_buf_free(bp, _RET_IP_); - ASSERT(list_empty(&bp->b_hash_list)); - if (bp->b_flags & (_XBF_PAGE_CACHE|_XBF_PAGES)) { uint i; @@ -423,8 +420,10 @@ _xfs_buf_find( { xfs_off_t range_base; size_t range_length; - xfs_bufhash_t *hash; - xfs_buf_t *bp, *n; + struct xfs_perag *pag; + struct rb_node **rbp; + struct rb_node *parent; + xfs_buf_t *bp; range_base = (ioff << BBSHIFT); range_length = (isize << BBSHIFT); @@ -433,20 +432,38 @@ _xfs_buf_find( ASSERT(!(range_length < (1 << btp->bt_sshift))); ASSERT(!(range_base & (xfs_off_t)btp->bt_smask)); - hash = &btp->bt_hash[hash_long((unsigned long)ioff, btp->bt_hashshift)]; - - spin_lock(&hash->bh_lock); - - list_for_each_entry_safe(bp, n, &hash->bh_list, b_hash_list) { - ASSERT(btp == bp->b_target); - if (bp->b_file_offset == range_base && - bp->b_buffer_length == range_length) { + /* get tree root */ + pag = xfs_perag_get(btp->bt_mount, + xfs_daddr_to_agno(btp->bt_mount, ioff)); + + /* walk tree */ + spin_lock(&pag->pag_buf_lock); + rbp = &pag->pag_buf_tree.rb_node; + parent = NULL; + bp = NULL; + while (*rbp) { + parent = *rbp; + bp = rb_entry(parent, struct xfs_buf, b_rbnode); + + if (range_base < bp->b_file_offset) + rbp = &(*rbp)->rb_left; + else if (range_base > bp->b_file_offset) + rbp = &(*rbp)->rb_right; + else { /* - * If we look at something, bring it to the - * front of the list for next time. + * found a block offset match. If the range doesn't + * match, the only way this is allowed is if the buffer + * in the cache is stale and the transaction that made + * it stale has not yet committed. i.e. we are + * reallocating a busy extent. Skip this buffer and + * continue searching to the right for an exact match. */ + if (bp->b_buffer_length != range_length) { + ASSERT(bp->b_flags & XBF_STALE); + rbp = &(*rbp)->rb_right; + continue; + } atomic_inc(&bp->b_hold); - list_move(&bp->b_hash_list, &hash->bh_list); goto found; } } @@ -455,17 +472,21 @@ _xfs_buf_find( if (new_bp) { _xfs_buf_initialize(new_bp, btp, range_base, range_length, flags); - new_bp->b_hash = hash; - list_add(&new_bp->b_hash_list, &hash->bh_list); + rb_link_node(&new_bp->b_rbnode, parent, rbp); + rb_insert_color(&new_bp->b_rbnode, &pag->pag_buf_tree); + /* the buffer keeps the perag reference until it is freed */ + new_bp->b_pag = pag; + spin_unlock(&pag->pag_buf_lock); } else { XFS_STATS_INC(xb_miss_locked); + spin_unlock(&pag->pag_buf_lock); + xfs_perag_put(pag); } - - spin_unlock(&hash->bh_lock); return new_bp; found: - spin_unlock(&hash->bh_lock); + spin_unlock(&pag->pag_buf_lock); + xfs_perag_put(pag); /* Attempt to get the semaphore without sleeping, * if this does not work then we need to drop the @@ -579,9 +600,9 @@ _xfs_buf_read( XBF_READ_AHEAD | _XBF_RUN_QUEUES); status = xfs_buf_iorequest(bp); - if (!status && !(flags & XBF_ASYNC)) - status = xfs_buf_iowait(bp); - return status; + if (status || XFS_BUF_ISERROR(bp) || (flags & XBF_ASYNC)) + return status; + return xfs_buf_iowait(bp); } xfs_buf_t * @@ -631,8 +652,7 @@ void xfs_buf_readahead( xfs_buftarg_t *target, xfs_off_t ioff, - size_t isize, - xfs_buf_flags_t flags) + size_t isize) { struct backing_dev_info *bdi; @@ -640,8 +660,42 @@ xfs_buf_readahead( if (bdi_read_congested(bdi)) return; - flags |= (XBF_TRYLOCK|XBF_ASYNC|XBF_READ_AHEAD); - xfs_buf_read(target, ioff, isize, flags); + xfs_buf_read(target, ioff, isize, + XBF_TRYLOCK|XBF_ASYNC|XBF_READ_AHEAD|XBF_DONT_BLOCK); +} + +/* + * Read an uncached buffer from disk. Allocates and returns a locked + * buffer containing the disk contents or nothing. + */ +struct xfs_buf * +xfs_buf_read_uncached( + struct xfs_mount *mp, + struct xfs_buftarg *target, + xfs_daddr_t daddr, + size_t length, + int flags) +{ + xfs_buf_t *bp; + int error; + + bp = xfs_buf_get_uncached(target, length, flags); + if (!bp) + return NULL; + + /* set up the buffer for a read IO */ + xfs_buf_lock(bp); + XFS_BUF_SET_ADDR(bp, daddr); + XFS_BUF_READ(bp); + XFS_BUF_BUSY(bp); + + xfsbdstrat(mp, bp); + error = xfs_buf_iowait(bp); + if (error || bp->b_error) { + xfs_buf_relse(bp); + return NULL; + } + return bp; } xfs_buf_t * @@ -713,9 +767,10 @@ xfs_buf_associate_memory( } xfs_buf_t * -xfs_buf_get_noaddr( +xfs_buf_get_uncached( + struct xfs_buftarg *target, size_t len, - xfs_buftarg_t *target) + int flags) { unsigned long page_count = PAGE_ALIGN(len) >> PAGE_SHIFT; int error, i; @@ -731,7 +786,7 @@ xfs_buf_get_noaddr( goto fail_free_buf; for (i = 0; i < page_count; i++) { - bp->b_pages[i] = alloc_page(GFP_KERNEL); + bp->b_pages[i] = alloc_page(xb_to_gfp(flags)); if (!bp->b_pages[i]) goto fail_free_mem; } @@ -746,7 +801,7 @@ xfs_buf_get_noaddr( xfs_buf_unlock(bp); - trace_xfs_buf_get_noaddr(bp, _RET_IP_); + trace_xfs_buf_get_uncached(bp, _RET_IP_); return bp; fail_free_mem: @@ -780,29 +835,30 @@ void xfs_buf_rele( xfs_buf_t *bp) { - xfs_bufhash_t *hash = bp->b_hash; + struct xfs_perag *pag = bp->b_pag; trace_xfs_buf_rele(bp, _RET_IP_); - if (unlikely(!hash)) { + if (!pag) { ASSERT(!bp->b_relse); + ASSERT(RB_EMPTY_NODE(&bp->b_rbnode)); if (atomic_dec_and_test(&bp->b_hold)) xfs_buf_free(bp); return; } + ASSERT(!RB_EMPTY_NODE(&bp->b_rbnode)); ASSERT(atomic_read(&bp->b_hold) > 0); - if (atomic_dec_and_lock(&bp->b_hold, &hash->bh_lock)) { + if (atomic_dec_and_lock(&bp->b_hold, &pag->pag_buf_lock)) { if (bp->b_relse) { atomic_inc(&bp->b_hold); - spin_unlock(&hash->bh_lock); - (*(bp->b_relse)) (bp); - } else if (bp->b_flags & XBF_FS_MANAGED) { - spin_unlock(&hash->bh_lock); + spin_unlock(&pag->pag_buf_lock); + bp->b_relse(bp); } else { ASSERT(!(bp->b_flags & (XBF_DELWRI|_XBF_DELWRI_Q))); - list_del_init(&bp->b_hash_list); - spin_unlock(&hash->bh_lock); + rb_erase(&bp->b_rbnode, &pag->pag_buf_tree); + spin_unlock(&pag->pag_buf_lock); + xfs_perag_put(pag); xfs_buf_free(bp); } } @@ -865,7 +921,7 @@ xfs_buf_lock( trace_xfs_buf_lock(bp, _RET_IP_); if (atomic_read(&bp->b_pin_count) && (bp->b_flags & XBF_STALE)) - xfs_log_force(bp->b_mount, 0); + xfs_log_force(bp->b_target->bt_mount, 0); if (atomic_read(&bp->b_io_remaining)) blk_run_address_space(bp->b_target->bt_mapping); down(&bp->b_sema); @@ -897,36 +953,6 @@ xfs_buf_unlock( trace_xfs_buf_unlock(bp, _RET_IP_); } - -/* - * Pinning Buffer Storage in Memory - * Ensure that no attempt to force a buffer to disk will succeed. - */ -void -xfs_buf_pin( - xfs_buf_t *bp) -{ - trace_xfs_buf_pin(bp, _RET_IP_); - atomic_inc(&bp->b_pin_count); -} - -void -xfs_buf_unpin( - xfs_buf_t *bp) -{ - trace_xfs_buf_unpin(bp, _RET_IP_); - - if (atomic_dec_and_test(&bp->b_pin_count)) - wake_up_all(&bp->b_waiters); -} - -int -xfs_buf_ispin( - xfs_buf_t *bp) -{ - return atomic_read(&bp->b_pin_count); -} - STATIC void xfs_buf_wait_unpin( xfs_buf_t *bp) @@ -960,19 +986,7 @@ xfs_buf_iodone_work( xfs_buf_t *bp = container_of(work, xfs_buf_t, b_iodone_work); - /* - * We can get an EOPNOTSUPP to ordered writes. Here we clear the - * ordered flag and reissue them. Because we can't tell the higher - * layers directly that they should not issue ordered I/O anymore, they - * need to check if the _XFS_BARRIER_FAILED flag was set during I/O completion. - */ - if ((bp->b_error == EOPNOTSUPP) && - (bp->b_flags & (XBF_ORDERED|XBF_ASYNC)) == (XBF_ORDERED|XBF_ASYNC)) { - trace_xfs_buf_ordered_retry(bp, _RET_IP_); - bp->b_flags &= ~XBF_ORDERED; - bp->b_flags |= _XFS_BARRIER_FAILED; - xfs_buf_iorequest(bp); - } else if (bp->b_iodone) + if (bp->b_iodone) (*(bp->b_iodone))(bp); else if (bp->b_flags & XBF_ASYNC) xfs_buf_relse(bp); @@ -1018,13 +1032,11 @@ xfs_bwrite( { int error; - bp->b_strat = xfs_bdstrat_cb; - bp->b_mount = mp; bp->b_flags |= XBF_WRITE; bp->b_flags &= ~(XBF_ASYNC | XBF_READ); xfs_buf_delwri_dequeue(bp); - xfs_buf_iostrategy(bp); + xfs_bdstrat_cb(bp); error = xfs_buf_iowait(bp); if (error) @@ -1040,9 +1052,6 @@ xfs_bdwrite( { trace_xfs_buf_bdwrite(bp, _RET_IP_); - bp->b_strat = xfs_bdstrat_cb; - bp->b_mount = mp; - bp->b_flags &= ~XBF_READ; bp->b_flags |= (XBF_DELWRI | XBF_ASYNC); @@ -1051,7 +1060,7 @@ xfs_bdwrite( /* * Called when we want to stop a buffer from getting written or read. - * We attach the EIO error, muck with its flags, and call biodone + * We attach the EIO error, muck with its flags, and call xfs_buf_ioend * so that the proper iodone callbacks get called. */ STATIC int @@ -1068,22 +1077,21 @@ xfs_bioerror( XFS_BUF_ERROR(bp, EIO); /* - * We're calling biodone, so delete XBF_DONE flag. + * We're calling xfs_buf_ioend, so delete XBF_DONE flag. */ XFS_BUF_UNREAD(bp); XFS_BUF_UNDELAYWRITE(bp); XFS_BUF_UNDONE(bp); XFS_BUF_STALE(bp); - XFS_BUF_CLR_BDSTRAT_FUNC(bp); - xfs_biodone(bp); + xfs_buf_ioend(bp, 0); return EIO; } /* * Same as xfs_bioerror, except that we are releasing the buffer - * here ourselves, and avoiding the biodone call. + * here ourselves, and avoiding the xfs_buf_ioend call. * This is meant for userdata errors; metadata bufs come with * iodone functions attached, so that we can track down errors. */ @@ -1105,7 +1113,6 @@ xfs_bioerror_relse( XFS_BUF_DONE(bp); XFS_BUF_STALE(bp); XFS_BUF_CLR_IODONE_FUNC(bp); - XFS_BUF_CLR_BDSTRAT_FUNC(bp); if (!(fl & XBF_ASYNC)) { /* * Mark b_error and B_ERROR _both_. @@ -1133,7 +1140,7 @@ int xfs_bdstrat_cb( struct xfs_buf *bp) { - if (XFS_FORCED_SHUTDOWN(bp->b_mount)) { + if (XFS_FORCED_SHUTDOWN(bp->b_target->bt_mount)) { trace_xfs_bdstrat_shut(bp, _RET_IP_); /* * Metadata write that didn't get logged but @@ -1235,7 +1242,7 @@ _xfs_buf_ioapply( if (bp->b_flags & XBF_ORDERED) { ASSERT(!(bp->b_flags & XBF_READ)); - rw = WRITE_BARRIER; + rw = WRITE_FLUSH_FUA; } else if (bp->b_flags & XBF_LOG_BUFFER) { ASSERT(!(bp->b_flags & XBF_READ_AHEAD)); bp->b_flags &= ~_XBF_RUN_QUEUES; @@ -1311,8 +1318,19 @@ submit_io: if (size) goto next_chunk; } else { - bio_put(bio); + /* + * if we get here, no pages were added to the bio. However, + * we can't just error out here - if the pages are locked then + * we have to unlock them otherwise we can hang on a later + * access to the page. + */ xfs_buf_ioerror(bp, EIO); + if (bp->b_flags & _XBF_PAGE_LOCKED) { + int i; + for (i = 0; i < bp->b_page_count; i++) + unlock_page(bp->b_pages[i]); + } + bio_put(bio); } } @@ -1428,63 +1446,24 @@ xfs_buf_iomove( */ void xfs_wait_buftarg( - xfs_buftarg_t *btp) -{ - xfs_buf_t *bp, *n; - xfs_bufhash_t *hash; - uint i; - - for (i = 0; i < (1 << btp->bt_hashshift); i++) { - hash = &btp->bt_hash[i]; -again: - spin_lock(&hash->bh_lock); - list_for_each_entry_safe(bp, n, &hash->bh_list, b_hash_list) { - ASSERT(btp == bp->b_target); - if (!(bp->b_flags & XBF_FS_MANAGED)) { - spin_unlock(&hash->bh_lock); - /* - * Catch superblock reference count leaks - * immediately - */ - BUG_ON(bp->b_bn == 0); - delay(100); - goto again; - } - } - spin_unlock(&hash->bh_lock); - } -} - -/* - * Allocate buffer hash table for a given target. - * For devices containing metadata (i.e. not the log/realtime devices) - * we need to allocate a much larger hash table. - */ -STATIC void -xfs_alloc_bufhash( - xfs_buftarg_t *btp, - int external) + struct xfs_buftarg *btp) { - unsigned int i; + struct xfs_perag *pag; + uint i; - btp->bt_hashshift = external ? 3 : 8; /* 8 or 256 buckets */ - btp->bt_hashmask = (1 << btp->bt_hashshift) - 1; - btp->bt_hash = kmem_zalloc_large((1 << btp->bt_hashshift) * - sizeof(xfs_bufhash_t)); - for (i = 0; i < (1 << btp->bt_hashshift); i++) { - spin_lock_init(&btp->bt_hash[i].bh_lock); - INIT_LIST_HEAD(&btp->bt_hash[i].bh_list); + for (i = 0; i < btp->bt_mount->m_sb.sb_agcount; i++) { + pag = xfs_perag_get(btp->bt_mount, i); + spin_lock(&pag->pag_buf_lock); + while (rb_first(&pag->pag_buf_tree)) { + spin_unlock(&pag->pag_buf_lock); + delay(100); + spin_lock(&pag->pag_buf_lock); + } + spin_unlock(&pag->pag_buf_lock); + xfs_perag_put(pag); } } -STATIC void -xfs_free_bufhash( - xfs_buftarg_t *btp) -{ - kmem_free_large(btp->bt_hash); - btp->bt_hash = NULL; -} - /* * buftarg list for delwrite queue processing */ @@ -1517,7 +1496,6 @@ xfs_free_buftarg( xfs_flush_buftarg(btp, 1); if (mp->m_flags & XFS_MOUNT_BARRIER) xfs_blkdev_issue_flush(btp); - xfs_free_bufhash(btp); iput(btp->bt_mapping->host); /* Unregister the buftarg first so that we don't get a @@ -1602,6 +1580,7 @@ xfs_mapping_buftarg( XFS_BUFTARG_NAME(btp)); return ENOMEM; } + inode->i_ino = get_next_ino(); inode->i_mode = S_IFBLK; inode->i_bdev = bdev; inode->i_rdev = bdev->bd_dev; @@ -1639,6 +1618,7 @@ out_error: xfs_buftarg_t * xfs_alloc_buftarg( + struct xfs_mount *mp, struct block_device *bdev, int external, const char *fsname) @@ -1647,6 +1627,7 @@ xfs_alloc_buftarg( btp = kmem_zalloc(sizeof(*btp), KM_SLEEP); + btp->bt_mount = mp; btp->bt_dev = bdev->bd_dev; btp->bt_bdev = bdev; if (xfs_setsize_buftarg_early(btp, bdev)) @@ -1655,7 +1636,6 @@ xfs_alloc_buftarg( goto error; if (xfs_alloc_delwrite_queue(btp, fsname)) goto error; - xfs_alloc_bufhash(btp, external); return btp; error: @@ -1804,7 +1784,7 @@ xfs_buf_delwri_split( trace_xfs_buf_delwri_split(bp, _RET_IP_); ASSERT(bp->b_flags & XBF_DELWRI); - if (!xfs_buf_ispin(bp) && !xfs_buf_cond_lock(bp)) { + if (!XFS_BUF_ISPINNED(bp) && !xfs_buf_cond_lock(bp)) { if (!force && time_before(jiffies, bp->b_queuetime + age)) { xfs_buf_unlock(bp); @@ -1889,7 +1869,7 @@ xfsbufd( struct xfs_buf *bp; bp = list_first_entry(&tmp, struct xfs_buf, b_list); list_del_init(&bp->b_list); - xfs_buf_iostrategy(bp); + xfs_bdstrat_cb(bp); count++; } if (count) @@ -1936,7 +1916,7 @@ xfs_flush_buftarg( bp->b_flags &= ~XBF_ASYNC; list_add(&bp->b_list, &wait_list); } - xfs_buf_iostrategy(bp); + xfs_bdstrat_cb(bp); } if (wait) { @@ -1946,7 +1926,7 @@ xfs_flush_buftarg( bp = list_first_entry(&wait_list, struct xfs_buf, b_list); list_del_init(&bp->b_list); - xfs_iowait(bp); + xfs_buf_iowait(bp); xfs_buf_relse(bp); } } @@ -1962,7 +1942,8 @@ xfs_buf_init(void) if (!xfs_buf_zone) goto out; - xfslogd_workqueue = create_workqueue("xfslogd"); + xfslogd_workqueue = alloc_workqueue("xfslogd", + WQ_MEM_RECLAIM | WQ_HIGHPRI, 1); if (!xfslogd_workqueue) goto out_free_buf_zone; diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 5fbecefa5df..383a3f37cf9 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -44,57 +44,48 @@ typedef enum { XBRW_ZERO = 3, /* Zero target memory */ } xfs_buf_rw_t; -typedef enum { - XBF_READ = (1 << 0), /* buffer intended for reading from device */ - XBF_WRITE = (1 << 1), /* buffer intended for writing to device */ - XBF_MAPPED = (1 << 2), /* buffer mapped (b_addr valid) */ - XBF_ASYNC = (1 << 4), /* initiator will not wait for completion */ - XBF_DONE = (1 << 5), /* all pages in the buffer uptodate */ - XBF_DELWRI = (1 << 6), /* buffer has dirty pages */ - XBF_STALE = (1 << 7), /* buffer has been staled, do not find it */ - XBF_FS_MANAGED = (1 << 8), /* filesystem controls freeing memory */ - XBF_ORDERED = (1 << 11), /* use ordered writes */ - XBF_READ_AHEAD = (1 << 12), /* asynchronous read-ahead */ - XBF_LOG_BUFFER = (1 << 13), /* this is a buffer used for the log */ - - /* flags used only as arguments to access routines */ - XBF_LOCK = (1 << 14), /* lock requested */ - XBF_TRYLOCK = (1 << 15), /* lock requested, but do not wait */ - XBF_DONT_BLOCK = (1 << 16), /* do not block in current thread */ - - /* flags used only internally */ - _XBF_PAGE_CACHE = (1 << 17),/* backed by pagecache */ - _XBF_PAGES = (1 << 18), /* backed by refcounted pages */ - _XBF_RUN_QUEUES = (1 << 19),/* run block device task queue */ - _XBF_DELWRI_Q = (1 << 21), /* buffer on delwri queue */ +#define XBF_READ (1 << 0) /* buffer intended for reading from device */ +#define XBF_WRITE (1 << 1) /* buffer intended for writing to device */ +#define XBF_MAPPED (1 << 2) /* buffer mapped (b_addr valid) */ +#define XBF_ASYNC (1 << 4) /* initiator will not wait for completion */ +#define XBF_DONE (1 << 5) /* all pages in the buffer uptodate */ +#define XBF_DELWRI (1 << 6) /* buffer has dirty pages */ +#define XBF_STALE (1 << 7) /* buffer has been staled, do not find it */ +#define XBF_ORDERED (1 << 11)/* use ordered writes */ +#define XBF_READ_AHEAD (1 << 12)/* asynchronous read-ahead */ +#define XBF_LOG_BUFFER (1 << 13)/* this is a buffer used for the log */ + +/* flags used only as arguments to access routines */ +#define XBF_LOCK (1 << 14)/* lock requested */ +#define XBF_TRYLOCK (1 << 15)/* lock requested, but do not wait */ +#define XBF_DONT_BLOCK (1 << 16)/* do not block in current thread */ + +/* flags used only internally */ +#define _XBF_PAGE_CACHE (1 << 17)/* backed by pagecache */ +#define _XBF_PAGES (1 << 18)/* backed by refcounted pages */ +#define _XBF_RUN_QUEUES (1 << 19)/* run block device task queue */ +#define _XBF_DELWRI_Q (1 << 21)/* buffer on delwri queue */ - /* - * Special flag for supporting metadata blocks smaller than a FSB. - * - * In this case we can have multiple xfs_buf_t on a single page and - * need to lock out concurrent xfs_buf_t readers as they only - * serialise access to the buffer. - * - * If the FSB size >= PAGE_CACHE_SIZE case, we have no serialisation - * between reads of the page. Hence we can have one thread read the - * page and modify it, but then race with another thread that thinks - * the page is not up-to-date and hence reads it again. - * - * The result is that the first modifcation to the page is lost. - * This sort of AGF/AGI reading race can happen when unlinking inodes - * that require truncation and results in the AGI unlinked list - * modifications being lost. - */ - _XBF_PAGE_LOCKED = (1 << 22), +/* + * Special flag for supporting metadata blocks smaller than a FSB. + * + * In this case we can have multiple xfs_buf_t on a single page and + * need to lock out concurrent xfs_buf_t readers as they only + * serialise access to the buffer. + * + * If the FSB size >= PAGE_CACHE_SIZE case, we have no serialisation + * between reads of the page. Hence we can have one thread read the + * page and modify it, but then race with another thread that thinks + * the page is not up-to-date and hence reads it again. + * + * The result is that the first modifcation to the page is lost. + * This sort of AGF/AGI reading race can happen when unlinking inodes + * that require truncation and results in the AGI unlinked list + * modifications being lost. + */ +#define _XBF_PAGE_LOCKED (1 << 22) - /* - * If we try a barrier write, but it fails we have to communicate - * this to the upper layers. Unfortunately b_error gets overwritten - * when the buffer is re-issued so we have to add another flag to - * keep this information. - */ - _XFS_BARRIER_FAILED = (1 << 23), -} xfs_buf_flags_t; +typedef unsigned int xfs_buf_flags_t; #define XFS_BUF_FLAGS \ { XBF_READ, "READ" }, \ @@ -104,7 +95,6 @@ typedef enum { { XBF_DONE, "DONE" }, \ { XBF_DELWRI, "DELWRI" }, \ { XBF_STALE, "STALE" }, \ - { XBF_FS_MANAGED, "FS_MANAGED" }, \ { XBF_ORDERED, "ORDERED" }, \ { XBF_READ_AHEAD, "READ_AHEAD" }, \ { XBF_LOCK, "LOCK" }, /* should never be set */\ @@ -114,8 +104,7 @@ typedef enum { { _XBF_PAGES, "PAGES" }, \ { _XBF_RUN_QUEUES, "RUN_QUEUES" }, \ { _XBF_DELWRI_Q, "DELWRI_Q" }, \ - { _XBF_PAGE_LOCKED, "PAGE_LOCKED" }, \ - { _XFS_BARRIER_FAILED, "BARRIER_FAILED" } + { _XBF_PAGE_LOCKED, "PAGE_LOCKED" } typedef enum { @@ -132,15 +121,11 @@ typedef struct xfs_buftarg { dev_t bt_dev; struct block_device *bt_bdev; struct address_space *bt_mapping; + struct xfs_mount *bt_mount; unsigned int bt_bsize; unsigned int bt_sshift; size_t bt_smask; - /* per device buffer hash table */ - uint bt_hashmask; - uint bt_hashshift; - xfs_bufhash_t *bt_hash; - /* per device delwri queue */ struct task_struct *bt_task; struct list_head bt_list; @@ -168,35 +153,41 @@ typedef int (*xfs_buf_bdstrat_t)(struct xfs_buf *); #define XB_PAGES 2 typedef struct xfs_buf { + /* + * first cacheline holds all the fields needed for an uncontended cache + * hit to be fully processed. The semaphore straddles the cacheline + * boundary, but the counter and lock sits on the first cacheline, + * which is the only bit that is touched if we hit the semaphore + * fast-path on locking. + */ + struct rb_node b_rbnode; /* rbtree node */ + xfs_off_t b_file_offset; /* offset in file */ + size_t b_buffer_length;/* size of buffer in bytes */ + atomic_t b_hold; /* reference count */ + xfs_buf_flags_t b_flags; /* status flags */ struct semaphore b_sema; /* semaphore for lockables */ - unsigned long b_queuetime; /* time buffer was queued */ - atomic_t b_pin_count; /* pin count */ + wait_queue_head_t b_waiters; /* unpin waiters */ struct list_head b_list; - xfs_buf_flags_t b_flags; /* status flags */ - struct list_head b_hash_list; /* hash table list */ - xfs_bufhash_t *b_hash; /* hash table list start */ + struct xfs_perag *b_pag; /* contains rbtree root */ xfs_buftarg_t *b_target; /* buffer target (device) */ - atomic_t b_hold; /* reference count */ xfs_daddr_t b_bn; /* block number for I/O */ - xfs_off_t b_file_offset; /* offset in file */ - size_t b_buffer_length;/* size of buffer in bytes */ size_t b_count_desired;/* desired transfer size */ void *b_addr; /* virtual address of buffer */ struct work_struct b_iodone_work; - atomic_t b_io_remaining; /* #outstanding I/O requests */ xfs_buf_iodone_t b_iodone; /* I/O completion function */ xfs_buf_relse_t b_relse; /* releasing function */ - xfs_buf_bdstrat_t b_strat; /* pre-write function */ struct completion b_iowait; /* queue for I/O waiters */ void *b_fspriv; void *b_fspriv2; - struct xfs_mount *b_mount; - unsigned short b_error; /* error code on I/O */ - unsigned int b_page_count; /* size of page array */ - unsigned int b_offset; /* page offset in first page */ struct page **b_pages; /* array of page pointers */ struct page *b_page_array[XB_PAGES]; /* inline pages */ + unsigned long b_queuetime; /* time buffer was queued */ + atomic_t b_pin_count; /* pin count */ + atomic_t b_io_remaining; /* #outstanding I/O requests */ + unsigned int b_page_count; /* size of page array */ + unsigned int b_offset; /* page offset in first page */ + unsigned short b_error; /* error code on I/O */ #ifdef XFS_BUF_LOCK_TRACKING int b_last_holder; #endif @@ -215,11 +206,13 @@ extern xfs_buf_t *xfs_buf_read(xfs_buftarg_t *, xfs_off_t, size_t, xfs_buf_flags_t); extern xfs_buf_t *xfs_buf_get_empty(size_t, xfs_buftarg_t *); -extern xfs_buf_t *xfs_buf_get_noaddr(size_t, xfs_buftarg_t *); +extern xfs_buf_t *xfs_buf_get_uncached(struct xfs_buftarg *, size_t, int); extern int xfs_buf_associate_memory(xfs_buf_t *, void *, size_t); extern void xfs_buf_hold(xfs_buf_t *); -extern void xfs_buf_readahead(xfs_buftarg_t *, xfs_off_t, size_t, - xfs_buf_flags_t); +extern void xfs_buf_readahead(xfs_buftarg_t *, xfs_off_t, size_t); +struct xfs_buf *xfs_buf_read_uncached(struct xfs_mount *mp, + struct xfs_buftarg *target, + xfs_daddr_t daddr, size_t length, int flags); /* Releasing Buffers */ extern void xfs_buf_free(xfs_buf_t *); @@ -244,11 +237,8 @@ extern int xfs_buf_iorequest(xfs_buf_t *); extern int xfs_buf_iowait(xfs_buf_t *); extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, void *, xfs_buf_rw_t); - -static inline int xfs_buf_iostrategy(xfs_buf_t *bp) -{ - return bp->b_strat ? bp->b_strat(bp) : xfs_buf_iorequest(bp); -} +#define xfs_buf_zero(bp, off, len) \ + xfs_buf_iomove((bp), (off), (len), NULL, XBRW_ZERO) static inline int xfs_buf_geterror(xfs_buf_t *bp) { @@ -258,11 +248,6 @@ static inline int xfs_buf_geterror(xfs_buf_t *bp) /* Buffer Utility Routines */ extern xfs_caddr_t xfs_buf_offset(xfs_buf_t *, size_t); -/* Pinning Buffer Storage in Memory */ -extern void xfs_buf_pin(xfs_buf_t *); -extern void xfs_buf_unpin(xfs_buf_t *); -extern int xfs_buf_ispin(xfs_buf_t *); - /* Delayed Write Buffer Routines */ extern void xfs_buf_delwri_dequeue(xfs_buf_t *); extern void xfs_buf_delwri_promote(xfs_buf_t *); @@ -288,8 +273,6 @@ extern void xfs_buf_terminate(void); XFS_BUF_DONE(bp); \ } while (0) -#define XFS_BUF_UNMANAGE(bp) ((bp)->b_flags &= ~XBF_FS_MANAGED) - #define XFS_BUF_DELAYWRITE(bp) ((bp)->b_flags |= XBF_DELWRI) #define XFS_BUF_UNDELAYWRITE(bp) xfs_buf_delwri_dequeue(bp) #define XFS_BUF_ISDELAYWRITE(bp) ((bp)->b_flags & XBF_DELWRI) @@ -326,8 +309,6 @@ extern void xfs_buf_terminate(void); #define XFS_BUF_IODONE_FUNC(bp) ((bp)->b_iodone) #define XFS_BUF_SET_IODONE_FUNC(bp, func) ((bp)->b_iodone = (func)) #define XFS_BUF_CLR_IODONE_FUNC(bp) ((bp)->b_iodone = NULL) -#define XFS_BUF_SET_BDSTRAT_FUNC(bp, func) ((bp)->b_strat = (func)) -#define XFS_BUF_CLR_BDSTRAT_FUNC(bp) ((bp)->b_strat = NULL) #define XFS_BUF_FSPRIVATE(bp, type) ((type)(bp)->b_fspriv) #define XFS_BUF_SET_FSPRIVATE(bp, val) ((bp)->b_fspriv = (void*)(val)) @@ -351,7 +332,7 @@ extern void xfs_buf_terminate(void); #define XFS_BUF_SET_VTYPE(bp, type) do { } while (0) #define XFS_BUF_SET_REF(bp, ref) do { } while (0) -#define XFS_BUF_ISPINNED(bp) xfs_buf_ispin(bp) +#define XFS_BUF_ISPINNED(bp) atomic_read(&((bp)->b_pin_count)) #define XFS_BUF_VALUSEMA(bp) xfs_buf_lock_value(bp) #define XFS_BUF_CPSEMA(bp) (xfs_buf_cond_lock(bp) == 0) @@ -370,27 +351,11 @@ static inline void xfs_buf_relse(xfs_buf_t *bp) xfs_buf_rele(bp); } -#define xfs_bpin(bp) xfs_buf_pin(bp) -#define xfs_bunpin(bp) xfs_buf_unpin(bp) -#define xfs_biodone(bp) xfs_buf_ioend(bp, 0) - -#define xfs_biomove(bp, off, len, data, rw) \ - xfs_buf_iomove((bp), (off), (len), (data), \ - ((rw) == XBF_WRITE) ? XBRW_WRITE : XBRW_READ) - -#define xfs_biozero(bp, off, len) \ - xfs_buf_iomove((bp), (off), (len), NULL, XBRW_ZERO) - -#define xfs_iowait(bp) xfs_buf_iowait(bp) - -#define xfs_baread(target, rablkno, ralen) \ - xfs_buf_readahead((target), (rablkno), (ralen), XBF_DONT_BLOCK) - - /* * Handling of buftargs. */ -extern xfs_buftarg_t *xfs_alloc_buftarg(struct block_device *, int, const char *); +extern xfs_buftarg_t *xfs_alloc_buftarg(struct xfs_mount *, + struct block_device *, int, const char *); extern void xfs_free_buftarg(struct xfs_mount *, struct xfs_buftarg *); extern void xfs_wait_buftarg(xfs_buftarg_t *); extern int xfs_setsize_buftarg(xfs_buftarg_t *, unsigned int, unsigned int); diff --git a/fs/xfs/linux-2.6/xfs_cred.h b/fs/xfs/linux-2.6/xfs_cred.h deleted file mode 100644 index 55bddf3b609..00000000000 --- a/fs/xfs/linux-2.6/xfs_cred.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_CRED_H__ -#define __XFS_CRED_H__ - -#include <linux/capability.h> - -/* - * Credentials - */ -typedef const struct cred cred_t; - -#endif /* __XFS_CRED_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_dmapi_priv.h b/fs/xfs/linux-2.6/xfs_dmapi_priv.h deleted file mode 100644 index a8b0b1685ee..00000000000 --- a/fs/xfs/linux-2.6/xfs_dmapi_priv.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * Copyright (c) 2000-2006 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_DMAPI_PRIV_H__ -#define __XFS_DMAPI_PRIV_H__ - -/* - * Based on IO_ISDIRECT, decide which i_ flag is set. - */ -#define DM_SEM_FLAG_RD(ioflags) (((ioflags) & IO_ISDIRECT) ? \ - DM_FLAGS_IMUX : 0) -#define DM_SEM_FLAG_WR (DM_FLAGS_IALLOCSEM_WR | DM_FLAGS_IMUX) - -#endif /*__XFS_DMAPI_PRIV_H__*/ diff --git a/fs/xfs/linux-2.6/xfs_export.c b/fs/xfs/linux-2.6/xfs_export.c index e7839ee49e4..3764d74790e 100644 --- a/fs/xfs/linux-2.6/xfs_export.c +++ b/fs/xfs/linux-2.6/xfs_export.c @@ -23,13 +23,13 @@ #include "xfs_sb.h" #include "xfs_ag.h" #include "xfs_dir2.h" -#include "xfs_dmapi.h" #include "xfs_mount.h" #include "xfs_export.h" #include "xfs_vnodeops.h" #include "xfs_bmap_btree.h" #include "xfs_inode.h" #include "xfs_inode_item.h" +#include "xfs_trace.h" /* * Note that we only accept fileids which are long enough rather than allow @@ -132,8 +132,7 @@ xfs_nfs_get_inode( * fine and not an indication of a corrupted filesystem as clients can * send invalid file handles and we have to handle it gracefully.. */ - error = xfs_iget(mp, NULL, ino, XFS_IGET_UNTRUSTED, - XFS_ILOCK_SHARED, &ip); + error = xfs_iget(mp, NULL, ino, XFS_IGET_UNTRUSTED, 0, &ip); if (error) { /* * EINVAL means the inode cluster doesn't exist anymore. @@ -148,11 +147,10 @@ xfs_nfs_get_inode( } if (ip->i_d.di_gen != generation) { - xfs_iput_new(ip, XFS_ILOCK_SHARED); + IRELE(ip); return ERR_PTR(-ENOENT); } - xfs_iunlock(ip, XFS_ILOCK_SHARED); return VFS_I(ip); } diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c index 257a56b127c..ba8ad422a16 100644 --- a/fs/xfs/linux-2.6/xfs_file.c +++ b/fs/xfs/linux-2.6/xfs_file.c @@ -22,23 +22,15 @@ #include "xfs_inum.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_trans.h" -#include "xfs_dmapi.h" #include "xfs_mount.h" #include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" #include "xfs_alloc.h" -#include "xfs_btree.h" -#include "xfs_attr_sf.h" -#include "xfs_dir2_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_inode_item.h" #include "xfs_bmap.h" #include "xfs_error.h" -#include "xfs_rw.h" #include "xfs_vnodeops.h" #include "xfs_da_btree.h" #include "xfs_ioctl.h" @@ -108,7 +100,7 @@ xfs_file_fsync( int error = 0; int log_flushed = 0; - xfs_itrace_entry(ip); + trace_xfs_file_fsync(ip); if (XFS_FORCED_SHUTDOWN(ip->i_mount)) return -XFS_ERROR(EIO); @@ -166,8 +158,7 @@ xfs_file_fsync( * transaction. So we play it safe and fire off the * transaction anyway. */ - xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); - xfs_trans_ihold(tp, ip); + xfs_trans_ijoin(tp, ip); xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); xfs_trans_set_sync(tp); error = _xfs_trans_commit(tp, 0, &log_flushed); @@ -275,20 +266,6 @@ xfs_file_aio_read( mutex_lock(&inode->i_mutex); xfs_ilock(ip, XFS_IOLOCK_SHARED); - if (DM_EVENT_ENABLED(ip, DM_EVENT_READ) && !(ioflags & IO_INVIS)) { - int dmflags = FILP_DELAY_FLAG(file) | DM_SEM_FLAG_RD(ioflags); - int iolock = XFS_IOLOCK_SHARED; - - ret = -XFS_SEND_DATA(mp, DM_EVENT_READ, ip, iocb->ki_pos, size, - dmflags, &iolock); - if (ret) { - xfs_iunlock(ip, XFS_IOLOCK_SHARED); - if (unlikely(ioflags & IO_ISDIRECT)) - mutex_unlock(&inode->i_mutex); - return ret; - } - } - if (unlikely(ioflags & IO_ISDIRECT)) { if (inode->i_mapping->nrpages) { ret = -xfs_flushinval_pages(ip, @@ -321,7 +298,6 @@ xfs_file_splice_read( unsigned int flags) { struct xfs_inode *ip = XFS_I(infilp->f_mapping->host); - struct xfs_mount *mp = ip->i_mount; int ioflags = 0; ssize_t ret; @@ -335,18 +311,6 @@ xfs_file_splice_read( xfs_ilock(ip, XFS_IOLOCK_SHARED); - if (DM_EVENT_ENABLED(ip, DM_EVENT_READ) && !(ioflags & IO_INVIS)) { - int iolock = XFS_IOLOCK_SHARED; - int error; - - error = XFS_SEND_DATA(mp, DM_EVENT_READ, ip, *ppos, count, - FILP_DELAY_FLAG(infilp), &iolock); - if (error) { - xfs_iunlock(ip, XFS_IOLOCK_SHARED); - return -error; - } - } - trace_xfs_file_splice_read(ip, count, *ppos, ioflags); ret = generic_file_splice_read(infilp, ppos, pipe, count, flags); @@ -367,7 +331,6 @@ xfs_file_splice_write( { struct inode *inode = outfilp->f_mapping->host; struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; xfs_fsize_t isize, new_size; int ioflags = 0; ssize_t ret; @@ -382,18 +345,6 @@ xfs_file_splice_write( xfs_ilock(ip, XFS_IOLOCK_EXCL); - if (DM_EVENT_ENABLED(ip, DM_EVENT_WRITE) && !(ioflags & IO_INVIS)) { - int iolock = XFS_IOLOCK_EXCL; - int error; - - error = XFS_SEND_DATA(mp, DM_EVENT_WRITE, ip, *ppos, count, - FILP_DELAY_FLAG(outfilp), &iolock); - if (error) { - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - return -error; - } - } - new_size = *ppos + count; xfs_ilock(ip, XFS_ILOCK_EXCL); @@ -463,7 +414,7 @@ xfs_zero_last_block( last_fsb = XFS_B_TO_FSBT(mp, isize); nimaps = 1; error = xfs_bmapi(NULL, ip, last_fsb, 1, 0, NULL, 0, &imap, - &nimaps, NULL, NULL); + &nimaps, NULL); if (error) { return error; } @@ -558,7 +509,7 @@ xfs_zero_eof( nimaps = 1; zero_count_fsb = end_zero_fsb - start_zero_fsb + 1; error = xfs_bmapi(NULL, ip, start_zero_fsb, zero_count_fsb, - 0, NULL, 0, &imap, &nimaps, NULL, NULL); + 0, NULL, 0, &imap, &nimaps, NULL); if (error) { ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); return error; @@ -627,7 +578,6 @@ xfs_file_aio_write( int ioflags = 0; xfs_fsize_t isize, new_size; int iolock; - int eventsent = 0; size_t ocount = 0, count; int need_i_mutex; @@ -673,33 +623,6 @@ start: goto out_unlock_mutex; } - if ((DM_EVENT_ENABLED(ip, DM_EVENT_WRITE) && - !(ioflags & IO_INVIS) && !eventsent)) { - int dmflags = FILP_DELAY_FLAG(file); - - if (need_i_mutex) - dmflags |= DM_FLAGS_IMUX; - - xfs_iunlock(ip, XFS_ILOCK_EXCL); - error = XFS_SEND_DATA(ip->i_mount, DM_EVENT_WRITE, ip, - pos, count, dmflags, &iolock); - if (error) { - goto out_unlock_internal; - } - xfs_ilock(ip, XFS_ILOCK_EXCL); - eventsent = 1; - - /* - * The iolock was dropped and reacquired in XFS_SEND_DATA - * so we have to recheck the size when appending. - * We will only "goto start;" once, since having sent the - * event prevents another call to XFS_SEND_DATA, which is - * what allows the size to change in the first place. - */ - if ((file->f_flags & O_APPEND) && pos != ip->i_size) - goto start; - } - if (ioflags & IO_ISDIRECT) { xfs_buftarg_t *target = XFS_IS_REALTIME_INODE(ip) ? @@ -830,22 +753,6 @@ write_retry: xfs_iunlock(ip, XFS_ILOCK_EXCL); } - if (ret == -ENOSPC && - DM_EVENT_ENABLED(ip, DM_EVENT_NOSPACE) && !(ioflags & IO_INVIS)) { - xfs_iunlock(ip, iolock); - if (need_i_mutex) - mutex_unlock(&inode->i_mutex); - error = XFS_SEND_NAMESP(ip->i_mount, DM_EVENT_NOSPACE, ip, - DM_RIGHT_NULL, ip, DM_RIGHT_NULL, NULL, NULL, - 0, 0, 0); /* Delay flag intentionally unused */ - if (need_i_mutex) - mutex_lock(&inode->i_mutex); - xfs_ilock(ip, iolock); - if (error) - goto out_unlock_internal; - goto start; - } - error = -ret; if (ret <= 0) goto out_unlock_internal; @@ -1014,9 +921,6 @@ const struct file_operations xfs_file_operations = { .open = xfs_file_open, .release = xfs_file_release, .fsync = xfs_file_fsync, -#ifdef HAVE_FOP_OPEN_EXEC - .open_exec = xfs_file_open_exec, -#endif }; const struct file_operations xfs_dir_file_operations = { diff --git a/fs/xfs/linux-2.6/xfs_fs_subr.c b/fs/xfs/linux-2.6/xfs_fs_subr.c index b6918d76bc7..ed88ed16811 100644 --- a/fs/xfs/linux-2.6/xfs_fs_subr.c +++ b/fs/xfs/linux-2.6/xfs_fs_subr.c @@ -21,10 +21,6 @@ #include "xfs_inode.h" #include "xfs_trace.h" -int fs_noerr(void) { return 0; } -int fs_nosys(void) { return ENOSYS; } -void fs_noval(void) { return; } - /* * note: all filemap functions return negative error codes. These * need to be inverted before returning to the xfs core functions. @@ -36,10 +32,9 @@ xfs_tosspages( xfs_off_t last, int fiopt) { - struct address_space *mapping = VFS_I(ip)->i_mapping; - - if (mapping->nrpages) - truncate_inode_pages(mapping, first); + /* can't toss partial tail pages, so mask them out */ + last &= ~(PAGE_SIZE - 1); + truncate_inode_pages_range(VFS_I(ip)->i_mapping, first, last - 1); } int @@ -54,12 +49,11 @@ xfs_flushinval_pages( trace_xfs_pagecache_inval(ip, first, last); - if (mapping->nrpages) { - xfs_iflags_clear(ip, XFS_ITRUNCATED); - ret = filemap_write_and_wait(mapping); - if (!ret) - truncate_inode_pages(mapping, first); - } + xfs_iflags_clear(ip, XFS_ITRUNCATED); + ret = filemap_write_and_wait_range(mapping, first, + last == -1 ? LLONG_MAX : last); + if (!ret) + truncate_inode_pages_range(mapping, first, last); return -ret; } @@ -75,10 +69,9 @@ xfs_flush_pages( int ret = 0; int ret2; - if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) { - xfs_iflags_clear(ip, XFS_ITRUNCATED); - ret = -filemap_fdatawrite(mapping); - } + xfs_iflags_clear(ip, XFS_ITRUNCATED); + ret = -filemap_fdatawrite_range(mapping, first, + last == -1 ? LLONG_MAX : last); if (flags & XBF_ASYNC) return ret; ret2 = xfs_wait_on_pages(ip, first, last); @@ -95,7 +88,9 @@ xfs_wait_on_pages( { struct address_space *mapping = VFS_I(ip)->i_mapping; - if (mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK)) - return -filemap_fdatawait(mapping); + if (mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK)) { + return -filemap_fdatawait_range(mapping, first, + last == -1 ? ip->i_size - 1 : last); + } return 0; } diff --git a/fs/xfs/linux-2.6/xfs_fs_subr.h b/fs/xfs/linux-2.6/xfs_fs_subr.h deleted file mode 100644 index 82bb19b2599..00000000000 --- a/fs/xfs/linux-2.6/xfs_fs_subr.h +++ /dev/null @@ -1,25 +0,0 @@ -/* - * Copyright (c) 2000,2002,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_FS_SUBR_H__ -#define __XFS_FS_SUBR_H__ - -extern int fs_noerr(void); -extern int fs_nosys(void); -extern void fs_noval(void); - -#endif /* __XFS_FS_SUBR_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_globals.c b/fs/xfs/linux-2.6/xfs_globals.c index 2ae8b1ccb02..76e81cff70b 100644 --- a/fs/xfs/linux-2.6/xfs_globals.c +++ b/fs/xfs/linux-2.6/xfs_globals.c @@ -16,7 +16,6 @@ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include "xfs.h" -#include "xfs_cred.h" #include "xfs_sysctl.h" /* diff --git a/fs/xfs/linux-2.6/xfs_globals.h b/fs/xfs/linux-2.6/xfs_globals.h deleted file mode 100644 index 69f71caf061..00000000000 --- a/fs/xfs/linux-2.6/xfs_globals.h +++ /dev/null @@ -1,23 +0,0 @@ -/* - * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_GLOBALS_H__ -#define __XFS_GLOBALS_H__ - -extern uint64_t xfs_panic_mask; /* set to cause more panics */ - -#endif /* __XFS_GLOBALS_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c index e59a8106283..2ea238f6d38 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl.c +++ b/fs/xfs/linux-2.6/xfs_ioctl.c @@ -23,24 +23,15 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_alloc.h" -#include "xfs_dmapi.h" #include "xfs_mount.h" #include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_attr_sf.h" -#include "xfs_dir2_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_ioctl.h" -#include "xfs_btree.h" -#include "xfs_ialloc.h" #include "xfs_rtalloc.h" #include "xfs_itable.h" #include "xfs_error.h" -#include "xfs_rw.h" #include "xfs_attr.h" #include "xfs_bmap.h" #include "xfs_buf_item.h" @@ -794,10 +785,12 @@ xfs_ioc_fsgetxattr( { struct fsxattr fa; + memset(&fa, 0, sizeof(struct fsxattr)); + xfs_ilock(ip, XFS_ILOCK_SHARED); fa.fsx_xflags = xfs_ip2xflags(ip); fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; - fa.fsx_projid = ip->i_d.di_projid; + fa.fsx_projid = xfs_get_projid(ip); if (attr) { if (ip->i_afp) { @@ -908,7 +901,7 @@ xfs_ioctl_setattr( struct xfs_dquot *olddquot = NULL; int code; - xfs_itrace_entry(ip); + trace_xfs_ioctl_setattr(ip); if (mp->m_flags & XFS_MOUNT_RDONLY) return XFS_ERROR(EROFS); @@ -916,6 +909,13 @@ xfs_ioctl_setattr( return XFS_ERROR(EIO); /* + * Disallow 32bit project ids when projid32bit feature is not enabled. + */ + if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && + !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) + return XFS_ERROR(EINVAL); + + /* * If disk quotas is on, we make sure that the dquots do exist on disk, * before we start any other transactions. Trying to do this later * is messy. We don't care to take a readlock to look at the ids @@ -961,7 +961,7 @@ xfs_ioctl_setattr( if (mask & FSX_PROJID) { if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) && - ip->i_d.di_projid != fa->fsx_projid) { + xfs_get_projid(ip) != fa->fsx_projid) { ASSERT(tp); code = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, capable(CAP_FOWNER) ? @@ -1043,8 +1043,7 @@ xfs_ioctl_setattr( } } - xfs_trans_ijoin(tp, ip, lock_flags); - xfs_trans_ihold(tp, ip); + xfs_trans_ijoin(tp, ip); /* * Change file ownership. Must be the owner or privileged. @@ -1064,12 +1063,12 @@ xfs_ioctl_setattr( * Change the ownerships and register quota modifications * in the transaction. */ - if (ip->i_d.di_projid != fa->fsx_projid) { + if (xfs_get_projid(ip) != fa->fsx_projid) { if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { olddquot = xfs_qm_vop_chown(tp, ip, &ip->i_gdquot, gdqp); } - ip->i_d.di_projid = fa->fsx_projid; + xfs_set_projid(ip, fa->fsx_projid); /* * We may have to rev the inode as well as @@ -1089,8 +1088,8 @@ xfs_ioctl_setattr( xfs_diflags_to_linux(ip); } + xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - xfs_ichgtime(ip, XFS_ICHGTIME_CHG); XFS_STATS_INC(xs_ig_attrchg); @@ -1116,16 +1115,7 @@ xfs_ioctl_setattr( xfs_qm_dqrele(udqp); xfs_qm_dqrele(gdqp); - if (code) - return code; - - if (DM_EVENT_ENABLED(ip, DM_EVENT_ATTRIBUTE)) { - XFS_SEND_NAMESP(mp, DM_EVENT_ATTRIBUTE, ip, DM_RIGHT_NULL, - NULL, DM_RIGHT_NULL, NULL, NULL, 0, 0, - (mask & FSX_NONBLOCK) ? DM_FLAGS_NDELAY : 0); - } - - return 0; + return code; error_return: xfs_qm_dqrele(udqp); @@ -1301,7 +1291,7 @@ xfs_file_ioctl( if (filp->f_mode & FMODE_NOCMTIME) ioflags |= IO_INVIS; - xfs_itrace_entry(ip); + trace_xfs_file_ioctl(ip); switch (cmd) { case XFS_IOC_ALLOCSP: @@ -1311,7 +1301,8 @@ xfs_file_ioctl( case XFS_IOC_ALLOCSP64: case XFS_IOC_FREESP64: case XFS_IOC_RESVSP64: - case XFS_IOC_UNRESVSP64: { + case XFS_IOC_UNRESVSP64: + case XFS_IOC_ZERO_RANGE: { xfs_flock64_t bf; if (copy_from_user(&bf, arg, sizeof(bf))) diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/linux-2.6/xfs_ioctl32.c index 52ed49e6465..b3486dfa552 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl32.c +++ b/fs/xfs/linux-2.6/xfs_ioctl32.c @@ -28,12 +28,8 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" -#include "xfs_dmapi.h" #include "xfs_mount.h" #include "xfs_bmap_btree.h" -#include "xfs_attr_sf.h" -#include "xfs_dir2_sf.h" #include "xfs_vnode.h" #include "xfs_dinode.h" #include "xfs_inode.h" @@ -168,7 +164,8 @@ xfs_ioctl32_bstat_copyin( get_user(bstat->bs_extsize, &bstat32->bs_extsize) || get_user(bstat->bs_extents, &bstat32->bs_extents) || get_user(bstat->bs_gen, &bstat32->bs_gen) || - get_user(bstat->bs_projid, &bstat32->bs_projid) || + get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) || + get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) || get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) || get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) || get_user(bstat->bs_aextents, &bstat32->bs_aextents)) @@ -222,6 +219,7 @@ xfs_bulkstat_one_fmt_compat( put_user(buffer->bs_extents, &p32->bs_extents) || put_user(buffer->bs_gen, &p32->bs_gen) || put_user(buffer->bs_projid, &p32->bs_projid) || + put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) || put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) || put_user(buffer->bs_dmstate, &p32->bs_dmstate) || put_user(buffer->bs_aextents, &p32->bs_aextents)) @@ -544,7 +542,7 @@ xfs_file_compat_ioctl( if (filp->f_mode & FMODE_NOCMTIME) ioflags |= IO_INVIS; - xfs_itrace_entry(ip); + trace_xfs_file_compat_ioctl(ip); switch (cmd) { /* No size or alignment issues on any arch */ @@ -578,6 +576,7 @@ xfs_file_compat_ioctl( case XFS_IOC_FSGEOMETRY_V1: case XFS_IOC_FSGROWFSDATA: case XFS_IOC_FSGROWFSRT: + case XFS_IOC_ZERO_RANGE: return xfs_file_ioctl(filp, cmd, p); #else case XFS_IOC_ALLOCSP_32: diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.h b/fs/xfs/linux-2.6/xfs_ioctl32.h index 1024c4f8ba0..08b605792a9 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl32.h +++ b/fs/xfs/linux-2.6/xfs_ioctl32.h @@ -65,8 +65,10 @@ typedef struct compat_xfs_bstat { __s32 bs_extsize; /* extent size */ __s32 bs_extents; /* number of extents */ __u32 bs_gen; /* generation count */ - __u16 bs_projid; /* project id */ - unsigned char bs_pad[14]; /* pad space, unused */ + __u16 bs_projid_lo; /* lower part of project id */ +#define bs_projid bs_projid_lo /* (previously just bs_projid) */ + __u16 bs_projid_hi; /* high part of project id */ + unsigned char bs_pad[12]; /* pad space, unused */ __u32 bs_dmevmask; /* DMIG event mask */ __u16 bs_dmstate; /* DMIG state info */ __u16 bs_aextents; /* attribute number of extents */ diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index 44f0b2de153..96107efc0c6 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -24,21 +24,13 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_alloc.h" -#include "xfs_dmapi.h" #include "xfs_quota.h" #include "xfs_mount.h" #include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_dir2_sf.h" -#include "xfs_attr_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_bmap.h" -#include "xfs_btree.h" -#include "xfs_ialloc.h" #include "xfs_rtalloc.h" #include "xfs_error.h" #include "xfs_itable.h" @@ -88,7 +80,7 @@ xfs_mark_inode_dirty_sync( { struct inode *inode = VFS_I(ip); - if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR))) + if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) mark_inode_dirty_sync(inode); } @@ -98,46 +90,11 @@ xfs_mark_inode_dirty( { struct inode *inode = VFS_I(ip); - if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR))) + if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) mark_inode_dirty(inode); } /* - * Change the requested timestamp in the given inode. - * We don't lock across timestamp updates, and we don't log them but - * we do record the fact that there is dirty information in core. - */ -void -xfs_ichgtime( - xfs_inode_t *ip, - int flags) -{ - struct inode *inode = VFS_I(ip); - timespec_t tv; - int sync_it = 0; - - tv = current_fs_time(inode->i_sb); - - if ((flags & XFS_ICHGTIME_MOD) && - !timespec_equal(&inode->i_mtime, &tv)) { - inode->i_mtime = tv; - sync_it = 1; - } - if ((flags & XFS_ICHGTIME_CHG) && - !timespec_equal(&inode->i_ctime, &tv)) { - inode->i_ctime = tv; - sync_it = 1; - } - - /* - * Update complete - now make sure everyone knows that the inode - * is dirty. - */ - if (sync_it) - xfs_mark_inode_dirty_sync(ip); -} - -/* * Hook in SELinux. This is not quite correct yet, what we really need * here (as we do for default ACLs) is a mechanism by which creation of * these attrs can be journalled at inode creation time (along with the @@ -232,7 +189,7 @@ xfs_vn_mknod( } xfs_dentry_to_name(&name, dentry); - error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL); + error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); if (unlikely(error)) goto out_free_acl; @@ -360,7 +317,7 @@ xfs_vn_link( if (unlikely(error)) return -error; - atomic_inc(&inode->i_count); + ihold(inode); d_instantiate(dentry, inode); return 0; } @@ -405,7 +362,7 @@ xfs_vn_symlink( (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); xfs_dentry_to_name(&name, dentry); - error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip, NULL); + error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip); if (unlikely(error)) goto out; @@ -496,7 +453,7 @@ xfs_vn_getattr( struct xfs_inode *ip = XFS_I(inode); struct xfs_mount *mp = ip->i_mount; - xfs_itrace_entry(ip); + trace_xfs_getattr(ip); if (XFS_FORCED_SHUTDOWN(mp)) return XFS_ERROR(EIO); @@ -548,21 +505,6 @@ xfs_vn_setattr( return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0); } -/* - * block_truncate_page can return an error, but we can't propagate it - * at all here. Leave a complaint + stack trace in the syslog because - * this could be bad. If it is bad, we need to propagate the error further. - */ -STATIC void -xfs_vn_truncate( - struct inode *inode) -{ - int error; - error = block_truncate_page(inode->i_mapping, inode->i_size, - xfs_get_blocks); - WARN_ON(error); -} - STATIC long xfs_vn_fallocate( struct inode *inode, @@ -687,7 +629,7 @@ xfs_vn_fiemap( fieinfo->fi_extents_max + 1; bm.bmv_count = min_t(__s32, bm.bmv_count, (PAGE_SIZE * 16 / sizeof(struct getbmapx))); - bm.bmv_iflags = BMV_IF_PREALLOC; + bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES; if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) bm.bmv_iflags |= BMV_IF_ATTRFORK; if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) @@ -702,7 +644,6 @@ xfs_vn_fiemap( static const struct inode_operations xfs_inode_operations = { .check_acl = xfs_check_acl, - .truncate = xfs_vn_truncate, .getattr = xfs_vn_getattr, .setattr = xfs_vn_setattr, .setxattr = generic_setxattr, @@ -819,7 +760,9 @@ xfs_setup_inode( inode->i_ino = ip->i_ino; inode->i_state = I_NEW; - inode_add_to_lists(ip->i_mount->m_super, inode); + + inode_sb_list_add(inode); + insert_inode_hash(inode); inode->i_mode = ip->i_d.di_mode; inode->i_nlink = ip->i_d.di_nlink; diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index facfb323a70..214ddd71ff7 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -71,6 +71,7 @@ #include <linux/random.h> #include <linux/ctype.h> #include <linux/writeback.h> +#include <linux/capability.h> #include <asm/page.h> #include <asm/div64.h> @@ -79,15 +80,12 @@ #include <asm/byteorder.h> #include <asm/unaligned.h> -#include <xfs_cred.h> #include <xfs_vnode.h> #include <xfs_stats.h> #include <xfs_sysctl.h> #include <xfs_iops.h> #include <xfs_aops.h> #include <xfs_super.h> -#include <xfs_globals.h> -#include <xfs_fs_subr.h> #include <xfs_buf.h> /* @@ -145,7 +143,7 @@ #define SYNCHRONIZE() barrier() #define __return_address __builtin_return_address(0) -#define dfltprid 0 +#define XFS_PROJID_DEFAULT 0 #define MAXPATHLEN 1024 #define MIN(a,b) (min(a,b)) @@ -157,8 +155,6 @@ */ #define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL) #define xfs_stack_trace() dump_stack() -#define xfs_itruncate_data(ip, off) \ - (-vmtruncate(VFS_I(ip), (off))) /* Move the kernel do_div definition off to one side */ diff --git a/fs/xfs/linux-2.6/xfs_quotaops.c b/fs/xfs/linux-2.6/xfs_quotaops.c index 067cafbfc63..29b9d642e93 100644 --- a/fs/xfs/linux-2.6/xfs_quotaops.c +++ b/fs/xfs/linux-2.6/xfs_quotaops.c @@ -16,7 +16,6 @@ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include "xfs.h" -#include "xfs_dmapi.h" #include "xfs_sb.h" #include "xfs_inum.h" #include "xfs_log.h" @@ -69,15 +68,15 @@ xfs_fs_set_xstate( if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp)) return -ENOSYS; - if (uflags & XFS_QUOTA_UDQ_ACCT) + if (uflags & FS_QUOTA_UDQ_ACCT) flags |= XFS_UQUOTA_ACCT; - if (uflags & XFS_QUOTA_PDQ_ACCT) + if (uflags & FS_QUOTA_PDQ_ACCT) flags |= XFS_PQUOTA_ACCT; - if (uflags & XFS_QUOTA_GDQ_ACCT) + if (uflags & FS_QUOTA_GDQ_ACCT) flags |= XFS_GQUOTA_ACCT; - if (uflags & XFS_QUOTA_UDQ_ENFD) + if (uflags & FS_QUOTA_UDQ_ENFD) flags |= XFS_UQUOTA_ENFD; - if (uflags & (XFS_QUOTA_PDQ_ENFD|XFS_QUOTA_GDQ_ENFD)) + if (uflags & (FS_QUOTA_PDQ_ENFD|FS_QUOTA_GDQ_ENFD)) flags |= XFS_OQUOTA_ENFD; switch (op) { diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index 80938c736c2..9f3a78fe6ae 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -25,14 +25,11 @@ #include "xfs_ag.h" #include "xfs_dir2.h" #include "xfs_alloc.h" -#include "xfs_dmapi.h" #include "xfs_quota.h" #include "xfs_mount.h" #include "xfs_bmap_btree.h" #include "xfs_alloc_btree.h" #include "xfs_ialloc_btree.h" -#include "xfs_dir2_sf.h" -#include "xfs_attr_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_btree.h" @@ -43,12 +40,10 @@ #include "xfs_error.h" #include "xfs_itable.h" #include "xfs_fsops.h" -#include "xfs_rw.h" #include "xfs_attr.h" #include "xfs_buf_item.h" #include "xfs_utils.h" #include "xfs_vnodeops.h" -#include "xfs_version.h" #include "xfs_log_priv.h" #include "xfs_trans_priv.h" #include "xfs_filestream.h" @@ -94,7 +89,6 @@ mempool_t *xfs_ioend_pool; #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and * unwritten extent conversion */ #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ -#define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */ #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ @@ -116,9 +110,6 @@ mempool_t *xfs_ioend_pool; #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ -#define MNTOPT_DMAPI "dmapi" /* DMI enabled (DMAPI / XDSM) */ -#define MNTOPT_XDSM "xdsm" /* DMI enabled (DMAPI / XDSM) */ -#define MNTOPT_DMI "dmi" /* DMI enabled (DMAPI / XDSM) */ #define MNTOPT_DELAYLOG "delaylog" /* Delayed loging enabled */ #define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed loging disabled */ @@ -172,15 +163,13 @@ suffix_strtoul(char *s, char **endp, unsigned int base) STATIC int xfs_parseargs( struct xfs_mount *mp, - char *options, - char **mtpt) + char *options) { struct super_block *sb = mp->m_super; char *this_char, *value, *eov; int dsunit = 0; int dswidth = 0; int iosize = 0; - int dmapi_implies_ikeep = 1; __uint8_t iosizelog = 0; /* @@ -243,15 +232,10 @@ xfs_parseargs( if (!mp->m_logname) return ENOMEM; } else if (!strcmp(this_char, MNTOPT_MTPT)) { - if (!value || !*value) { - cmn_err(CE_WARN, - "XFS: %s option requires an argument", - this_char); - return EINVAL; - } - *mtpt = kstrndup(value, MAXNAMELEN, GFP_KERNEL); - if (!*mtpt) - return ENOMEM; + cmn_err(CE_WARN, + "XFS: %s option not allowed on this system", + this_char); + return EINVAL; } else if (!strcmp(this_char, MNTOPT_RTDEV)) { if (!value || !*value) { cmn_err(CE_WARN, @@ -288,8 +272,6 @@ xfs_parseargs( mp->m_flags &= ~XFS_MOUNT_GRPID; } else if (!strcmp(this_char, MNTOPT_WSYNC)) { mp->m_flags |= XFS_MOUNT_WSYNC; - } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) { - mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC; } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { mp->m_flags |= XFS_MOUNT_NORECOVERY; } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { @@ -329,7 +311,6 @@ xfs_parseargs( } else if (!strcmp(this_char, MNTOPT_IKEEP)) { mp->m_flags |= XFS_MOUNT_IKEEP; } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { - dmapi_implies_ikeep = 0; mp->m_flags &= ~XFS_MOUNT_IKEEP; } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; @@ -370,12 +351,6 @@ xfs_parseargs( } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); mp->m_qflags &= ~XFS_OQUOTA_ENFD; - } else if (!strcmp(this_char, MNTOPT_DMAPI)) { - mp->m_flags |= XFS_MOUNT_DMAPI; - } else if (!strcmp(this_char, MNTOPT_XDSM)) { - mp->m_flags |= XFS_MOUNT_DMAPI; - } else if (!strcmp(this_char, MNTOPT_DMI)) { - mp->m_flags |= XFS_MOUNT_DMAPI; } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { mp->m_flags |= XFS_MOUNT_DELAYLOG; cmn_err(CE_WARN, @@ -387,9 +362,11 @@ xfs_parseargs( cmn_err(CE_WARN, "XFS: ihashsize no longer used, option is deprecated."); } else if (!strcmp(this_char, "osyncisdsync")) { - /* no-op, this is now the default */ cmn_err(CE_WARN, - "XFS: osyncisdsync is now the default, option is deprecated."); + "XFS: osyncisdsync has no effect, option is deprecated."); + } else if (!strcmp(this_char, "osyncisosync")) { + cmn_err(CE_WARN, + "XFS: osyncisosync has no effect, option is deprecated."); } else if (!strcmp(this_char, "irixsgid")) { cmn_err(CE_WARN, "XFS: irixsgid is now a sysctl(2) variable, option is deprecated."); @@ -430,12 +407,6 @@ xfs_parseargs( return EINVAL; } - if ((mp->m_flags & XFS_MOUNT_DMAPI) && (!*mtpt || *mtpt[0] == '\0')) { - printk("XFS: %s option needs the mount point option as well\n", - MNTOPT_DMAPI); - return EINVAL; - } - if ((dsunit && !dswidth) || (!dsunit && dswidth)) { cmn_err(CE_WARN, "XFS: sunit and swidth must be specified together"); @@ -449,18 +420,6 @@ xfs_parseargs( return EINVAL; } - /* - * Applications using DMI filesystems often expect the - * inode generation number to be monotonically increasing. - * If we delete inode chunks we break this assumption, so - * keep unused inode chunks on disk for DMI filesystems - * until we come up with a better solution. - * Note that if "ikeep" or "noikeep" mount options are - * supplied, then they are honored. - */ - if ((mp->m_flags & XFS_MOUNT_DMAPI) && dmapi_implies_ikeep) - mp->m_flags |= XFS_MOUNT_IKEEP; - done: if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { /* @@ -539,10 +498,8 @@ xfs_showargs( { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, - { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC }, { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, - { XFS_MOUNT_DMAPI, "," MNTOPT_DMAPI }, { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, { XFS_MOUNT_DELAYLOG, "," MNTOPT_DELAYLOG }, { 0, NULL } @@ -619,7 +576,7 @@ xfs_max_file_offset( /* Figure out maximum filesize, on Linux this can depend on * the filesystem blocksize (on 32 bit platforms). - * __block_prepare_write does this in an [unsigned] long... + * __block_write_begin does this in an [unsigned] long... * page->index << (PAGE_CACHE_SHIFT - bbits) * So, for page sized blocks (4K on 32 bit platforms), * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is @@ -687,7 +644,7 @@ xfs_barrier_test( XFS_BUF_ORDERED(sbp); xfsbdstrat(mp, sbp); - error = xfs_iowait(sbp); + error = xfs_buf_iowait(sbp); /* * Clear all the flags we set and possible error state in the @@ -735,8 +692,7 @@ void xfs_blkdev_issue_flush( xfs_buftarg_t *buftarg) { - blkdev_issue_flush(buftarg->bt_bdev, GFP_KERNEL, NULL, - BLKDEV_IFL_WAIT); + blkdev_issue_flush(buftarg->bt_bdev, GFP_KERNEL, NULL); } STATIC void @@ -800,18 +756,20 @@ xfs_open_devices( * Setup xfs_mount buffer target pointers */ error = ENOMEM; - mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0, mp->m_fsname); + mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname); if (!mp->m_ddev_targp) goto out_close_rtdev; if (rtdev) { - mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1, mp->m_fsname); + mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1, + mp->m_fsname); if (!mp->m_rtdev_targp) goto out_free_ddev_targ; } if (logdev && logdev != ddev) { - mp->m_logdev_targp = xfs_alloc_buftarg(logdev, 1, mp->m_fsname); + mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1, + mp->m_fsname); if (!mp->m_logdev_targp) goto out_free_rtdev_targ; } else { @@ -947,7 +905,7 @@ xfs_fs_destroy_inode( { struct xfs_inode *ip = XFS_I(inode); - xfs_itrace_entry(ip); + trace_xfs_destroy_inode(ip); XFS_STATS_INC(vn_reclaim); @@ -1014,12 +972,7 @@ xfs_fs_inode_init_once( /* * Dirty the XFS inode when mark_inode_dirty_sync() is called so that - * we catch unlogged VFS level updates to the inode. Care must be taken - * here - the transaction code calls mark_inode_dirty_sync() to mark the - * VFS inode dirty in a transaction and clears the i_update_core field; - * it must clear the field after calling mark_inode_dirty_sync() to - * correctly indicate that the dirty state has been propagated into the - * inode log item. + * we catch unlogged VFS level updates to the inode. * * We need the barrier() to maintain correct ordering between unlogged * updates and the transaction commit code that clears the i_update_core @@ -1063,10 +1016,8 @@ xfs_log_inode( * an inode in another recent transaction. So we play it safe and * fire off the transaction anyway. */ - xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); - xfs_trans_ihold(tp, ip); + xfs_trans_ijoin(tp, ip); xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - xfs_trans_set_sync(tp); error = xfs_trans_commit(tp, 0); xfs_ilock_demote(ip, XFS_ILOCK_EXCL); @@ -1082,27 +1033,18 @@ xfs_fs_write_inode( struct xfs_mount *mp = ip->i_mount; int error = EAGAIN; - xfs_itrace_entry(ip); + trace_xfs_write_inode(ip); if (XFS_FORCED_SHUTDOWN(mp)) return XFS_ERROR(EIO); if (wbc->sync_mode == WB_SYNC_ALL) { /* - * Make sure the inode has hit stable storage. By using the - * log and the fsync transactions we reduce the IOs we have - * to do here from two (log and inode) to just the log. - * - * Note: We still need to do a delwri write of the inode after - * this to flush it to the backing buffer so that bulkstat - * works properly if this is the first time the inode has been - * written. Because we hold the ilock atomically over the - * transaction commit and the inode flush we are guaranteed - * that the inode is not pinned when it returns. If the flush - * lock is already held, then the inode has already been - * flushed once and we don't need to flush it again. Hence - * the code will only flush the inode if it isn't already - * being flushed. + * Make sure the inode has made it it into the log. Instead + * of forcing it all the way to stable storage using a + * synchronous transaction we let the log force inside the + * ->sync_fs call do that for thus, which reduces the number + * of synchronous log foces dramatically. */ xfs_ioend_wait(ip); xfs_ilock(ip, XFS_ILOCK_SHARED); @@ -1116,27 +1058,29 @@ xfs_fs_write_inode( * We make this non-blocking if the inode is contended, return * EAGAIN to indicate to the caller that they did not succeed. * This prevents the flush path from blocking on inodes inside - * another operation right now, they get caught later by xfs_sync. + * another operation right now, they get caught later by + * xfs_sync. */ if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) goto out; - } - if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) - goto out_unlock; + if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) + goto out_unlock; - /* - * Now we have the flush lock and the inode is not pinned, we can check - * if the inode is really clean as we know that there are no pending - * transaction completions, it is not waiting on the delayed write - * queue and there is no IO in progress. - */ - if (xfs_inode_clean(ip)) { - xfs_ifunlock(ip); - error = 0; - goto out_unlock; + /* + * Now we have the flush lock and the inode is not pinned, we + * can check if the inode is really clean as we know that + * there are no pending transaction completions, it is not + * waiting on the delayed write queue and there is no IO in + * progress. + */ + if (xfs_inode_clean(ip)) { + xfs_ifunlock(ip); + error = 0; + goto out_unlock; + } + error = xfs_iflush(ip, 0); } - error = xfs_iflush(ip, 0); out_unlock: xfs_iunlock(ip, XFS_ILOCK_SHARED); @@ -1151,12 +1095,15 @@ xfs_fs_write_inode( } STATIC void -xfs_fs_clear_inode( +xfs_fs_evict_inode( struct inode *inode) { xfs_inode_t *ip = XFS_I(inode); - xfs_itrace_entry(ip); + trace_xfs_evict_inode(ip); + + truncate_inode_pages(&inode->i_data, 0); + end_writeback(inode); XFS_STATS_INC(vn_rele); XFS_STATS_INC(vn_remove); XFS_STATS_DEC(vn_active); @@ -1193,22 +1140,13 @@ xfs_fs_put_super( { struct xfs_mount *mp = XFS_M(sb); + /* + * Unregister the memory shrinker before we tear down the mount + * structure so we don't have memory reclaim racing with us here. + */ + xfs_inode_shrinker_unregister(mp); xfs_syncd_stop(mp); - if (!(sb->s_flags & MS_RDONLY)) { - /* - * XXX(hch): this should be SYNC_WAIT. - * - * Or more likely not needed at all because the VFS is already - * calling ->sync_fs after shutting down all filestem - * operations and just before calling ->put_super. - */ - xfs_sync_data(mp, 0); - xfs_sync_attr(mp, 0); - } - - XFS_SEND_PREUNMOUNT(mp); - /* * Blow away any referenced inode in the filestreams cache. * This can and will cause log traffic as inodes go inactive @@ -1218,14 +1156,10 @@ xfs_fs_put_super( XFS_bflush(mp->m_ddev_targp); - XFS_SEND_UNMOUNT(mp); - xfs_unmountfs(mp); xfs_freesb(mp); - xfs_inode_shrinker_unregister(mp); xfs_icsb_destroy_counters(mp); xfs_close_devices(mp); - xfs_dmops_put(mp); xfs_free_fsname(mp); kfree(mp); } @@ -1287,6 +1221,7 @@ xfs_fs_statfs( struct xfs_inode *ip = XFS_I(dentry->d_inode); __uint64_t fakeinos, id; xfs_extlen_t lsize; + __int64_t ffree; statp->f_type = XFS_SB_MAGIC; statp->f_namelen = MAXNAMELEN - 1; @@ -1310,7 +1245,11 @@ xfs_fs_statfs( statp->f_files = min_t(typeof(statp->f_files), statp->f_files, mp->m_maxicount); - statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); + + /* make sure statp->f_ffree does not underflow */ + ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); + statp->f_ffree = max_t(__int64_t, ffree, 0); + spin_unlock(&mp->m_sb_lock); if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || @@ -1463,7 +1402,7 @@ xfs_fs_freeze( xfs_save_resvblks(mp); xfs_quiesce_attr(mp); - return -xfs_fs_log_dummy(mp); + return -xfs_fs_log_dummy(mp, SYNC_WAIT); } STATIC int @@ -1543,7 +1482,6 @@ xfs_fs_fill_super( struct inode *root; struct xfs_mount *mp = NULL; int flags = 0, error = ENOMEM; - char *mtpt = NULL; mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); if (!mp) @@ -1559,7 +1497,7 @@ xfs_fs_fill_super( mp->m_super = sb; sb->s_fs_info = mp; - error = xfs_parseargs(mp, (char *)data, &mtpt); + error = xfs_parseargs(mp, (char *)data); if (error) goto out_free_fsname; @@ -1571,19 +1509,16 @@ xfs_fs_fill_super( #endif sb->s_op = &xfs_super_operations; - error = xfs_dmops_get(mp); - if (error) - goto out_free_fsname; - if (silent) flags |= XFS_MFSI_QUIET; error = xfs_open_devices(mp); if (error) - goto out_put_dmops; + goto out_free_fsname; - if (xfs_icsb_init_counters(mp)) - mp->m_flags |= XFS_MOUNT_NO_PERCPU_SB; + error = xfs_icsb_init_counters(mp); + if (error) + goto out_close_devices; error = xfs_readsb(mp, flags); if (error) @@ -1608,8 +1543,6 @@ xfs_fs_fill_super( if (error) goto out_filestream_unmount; - XFS_SEND_MOUNT(mp, DM_RIGHT_NULL, mtpt, mp->m_fsname); - sb->s_magic = XFS_SB_MAGIC; sb->s_blocksize = mp->m_sb.sb_blocksize; sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; @@ -1638,7 +1571,6 @@ xfs_fs_fill_super( xfs_inode_shrinker_register(mp); - kfree(mtpt); return 0; out_filestream_unmount: @@ -1647,12 +1579,10 @@ xfs_fs_fill_super( xfs_freesb(mp); out_destroy_counters: xfs_icsb_destroy_counters(mp); + out_close_devices: xfs_close_devices(mp); - out_put_dmops: - xfs_dmops_put(mp); out_free_fsname: xfs_free_fsname(mp); - kfree(mtpt); kfree(mp); out: return -error; @@ -1679,16 +1609,14 @@ xfs_fs_fill_super( goto out_free_sb; } -STATIC int -xfs_fs_get_sb( +STATIC struct dentry * +xfs_fs_mount( struct file_system_type *fs_type, int flags, const char *dev_name, - void *data, - struct vfsmount *mnt) + void *data) { - return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super, - mnt); + return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); } static const struct super_operations xfs_super_operations = { @@ -1696,7 +1624,7 @@ static const struct super_operations xfs_super_operations = { .destroy_inode = xfs_fs_destroy_inode, .dirty_inode = xfs_fs_dirty_inode, .write_inode = xfs_fs_write_inode, - .clear_inode = xfs_fs_clear_inode, + .evict_inode = xfs_fs_evict_inode, .put_super = xfs_fs_put_super, .sync_fs = xfs_fs_sync_fs, .freeze_fs = xfs_fs_freeze, @@ -1709,7 +1637,7 @@ static const struct super_operations xfs_super_operations = { static struct file_system_type xfs_fs_type = { .owner = THIS_MODULE, .name = "xfs", - .get_sb = xfs_fs_get_sb, + .mount = xfs_fs_mount, .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; @@ -1759,6 +1687,12 @@ xfs_init_zones(void) if (!xfs_trans_zone) goto out_destroy_ifork_zone; + xfs_log_item_desc_zone = + kmem_zone_init(sizeof(struct xfs_log_item_desc), + "xfs_log_item_desc"); + if (!xfs_log_item_desc_zone) + goto out_destroy_trans_zone; + /* * The size of the zone allocated buf log item is the maximum * size possible under XFS. This wastes a little bit of memory, @@ -1768,7 +1702,7 @@ xfs_init_zones(void) (((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD) * sizeof(int))), "xfs_buf_item"); if (!xfs_buf_item_zone) - goto out_destroy_trans_zone; + goto out_destroy_log_item_desc_zone; xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + ((XFS_EFD_MAX_FAST_EXTENTS - 1) * @@ -1805,6 +1739,8 @@ xfs_init_zones(void) kmem_zone_destroy(xfs_efd_zone); out_destroy_buf_item_zone: kmem_zone_destroy(xfs_buf_item_zone); + out_destroy_log_item_desc_zone: + kmem_zone_destroy(xfs_log_item_desc_zone); out_destroy_trans_zone: kmem_zone_destroy(xfs_trans_zone); out_destroy_ifork_zone: @@ -1835,6 +1771,7 @@ xfs_destroy_zones(void) kmem_zone_destroy(xfs_efi_zone); kmem_zone_destroy(xfs_efd_zone); kmem_zone_destroy(xfs_buf_item_zone); + kmem_zone_destroy(xfs_log_item_desc_zone); kmem_zone_destroy(xfs_trans_zone); kmem_zone_destroy(xfs_ifork_zone); kmem_zone_destroy(xfs_dabuf_zone); diff --git a/fs/xfs/linux-2.6/xfs_super.h b/fs/xfs/linux-2.6/xfs_super.h index 519618e9279..50a3266c999 100644 --- a/fs/xfs/linux-2.6/xfs_super.h +++ b/fs/xfs/linux-2.6/xfs_super.h @@ -56,23 +56,17 @@ extern void xfs_qm_exit(void); # define XFS_BIGFS_STRING #endif -#ifdef CONFIG_XFS_DMAPI -# define XFS_DMAPI_STRING "dmapi support, " -#else -# define XFS_DMAPI_STRING -#endif - #ifdef DEBUG # define XFS_DBG_STRING "debug" #else # define XFS_DBG_STRING "no debug" #endif +#define XFS_VERSION_STRING "SGI XFS" #define XFS_BUILD_OPTIONS XFS_ACL_STRING \ XFS_SECURITY_STRING \ XFS_REALTIME_STRING \ XFS_BIGFS_STRING \ - XFS_DMAPI_STRING \ XFS_DBG_STRING /* DBG must be last */ struct xfs_inode; diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c index a51a07c3a70..37d33254981 100644 --- a/fs/xfs/linux-2.6/xfs_sync.c +++ b/fs/xfs/linux-2.6/xfs_sync.c @@ -24,67 +24,54 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" -#include "xfs_dmapi.h" #include "xfs_mount.h" #include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_btree.h" -#include "xfs_dir2_sf.h" -#include "xfs_attr_sf.h" #include "xfs_inode.h" #include "xfs_dinode.h" #include "xfs_error.h" -#include "xfs_mru_cache.h" #include "xfs_filestream.h" #include "xfs_vnodeops.h" -#include "xfs_utils.h" -#include "xfs_buf_item.h" #include "xfs_inode_item.h" -#include "xfs_rw.h" #include "xfs_quota.h" #include "xfs_trace.h" +#include "xfs_fsops.h" #include <linux/kthread.h> #include <linux/freezer.h> +/* + * The inode lookup is done in batches to keep the amount of lock traffic and + * radix tree lookups to a minimum. The batch size is a trade off between + * lookup reduction and stack usage. This is in the reclaim path, so we can't + * be too greedy. + */ +#define XFS_LOOKUP_BATCH 32 -STATIC xfs_inode_t * -xfs_inode_ag_lookup( - struct xfs_mount *mp, - struct xfs_perag *pag, - uint32_t *first_index, - int tag) +STATIC int +xfs_inode_ag_walk_grab( + struct xfs_inode *ip) { - int nr_found; - struct xfs_inode *ip; + struct inode *inode = VFS_I(ip); - /* - * use a gang lookup to find the next inode in the tree - * as the tree is sparse and a gang lookup walks to find - * the number of objects requested. - */ - if (tag == XFS_ICI_NO_TAG) { - nr_found = radix_tree_gang_lookup(&pag->pag_ici_root, - (void **)&ip, *first_index, 1); - } else { - nr_found = radix_tree_gang_lookup_tag(&pag->pag_ici_root, - (void **)&ip, *first_index, 1, tag); + /* nothing to sync during shutdown */ + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) + return EFSCORRUPTED; + + /* avoid new or reclaimable inodes. Leave for reclaim code to flush */ + if (xfs_iflags_test(ip, XFS_INEW | XFS_IRECLAIMABLE | XFS_IRECLAIM)) + return ENOENT; + + /* If we can't grab the inode, it must on it's way to reclaim. */ + if (!igrab(inode)) + return ENOENT; + + if (is_bad_inode(inode)) { + IRELE(ip); + return ENOENT; } - if (!nr_found) - return NULL; - /* - * Update the index for the next lookup. Catch overflows - * into the next AG range which can occur if we have inodes - * in the last block of the AG and we are currently - * pointing to the last inode. - */ - *first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1); - if (*first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) - return NULL; - return ip; + /* inode is valid */ + return 0; } STATIC int @@ -93,49 +80,75 @@ xfs_inode_ag_walk( struct xfs_perag *pag, int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag, int flags), - int flags, - int tag, - int exclusive, - int *nr_to_scan) + int flags) { uint32_t first_index; int last_error = 0; int skipped; + int done; + int nr_found; restart: + done = 0; skipped = 0; first_index = 0; + nr_found = 0; do { + struct xfs_inode *batch[XFS_LOOKUP_BATCH]; int error = 0; - xfs_inode_t *ip; + int i; - if (exclusive) - write_lock(&pag->pag_ici_lock); - else - read_lock(&pag->pag_ici_lock); - ip = xfs_inode_ag_lookup(mp, pag, &first_index, tag); - if (!ip) { - if (exclusive) - write_unlock(&pag->pag_ici_lock); - else - read_unlock(&pag->pag_ici_lock); + read_lock(&pag->pag_ici_lock); + nr_found = radix_tree_gang_lookup(&pag->pag_ici_root, + (void **)batch, first_index, + XFS_LOOKUP_BATCH); + if (!nr_found) { + read_unlock(&pag->pag_ici_lock); break; } - /* execute releases pag->pag_ici_lock */ - error = execute(ip, pag, flags); - if (error == EAGAIN) { - skipped++; - continue; + /* + * Grab the inodes before we drop the lock. if we found + * nothing, nr == 0 and the loop will be skipped. + */ + for (i = 0; i < nr_found; i++) { + struct xfs_inode *ip = batch[i]; + + if (done || xfs_inode_ag_walk_grab(ip)) + batch[i] = NULL; + + /* + * Update the index for the next lookup. Catch overflows + * into the next AG range which can occur if we have inodes + * in the last block of the AG and we are currently + * pointing to the last inode. + */ + first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1); + if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) + done = 1; + } + + /* unlock now we've grabbed the inodes. */ + read_unlock(&pag->pag_ici_lock); + + for (i = 0; i < nr_found; i++) { + if (!batch[i]) + continue; + error = execute(batch[i], pag, flags); + IRELE(batch[i]); + if (error == EAGAIN) { + skipped++; + continue; + } + if (error && last_error != EFSCORRUPTED) + last_error = error; } - if (error) - last_error = error; /* bail out if the filesystem is corrupted. */ if (error == EFSCORRUPTED) break; - } while ((*nr_to_scan)--); + } while (nr_found && !done); if (skipped) { delay(1); @@ -144,110 +157,32 @@ restart: return last_error; } -/* - * Select the next per-ag structure to iterate during the walk. The reclaim - * walk is optimised only to walk AGs with reclaimable inodes in them. - */ -static struct xfs_perag * -xfs_inode_ag_iter_next_pag( - struct xfs_mount *mp, - xfs_agnumber_t *first, - int tag) -{ - struct xfs_perag *pag = NULL; - - if (tag == XFS_ICI_RECLAIM_TAG) { - int found; - int ref; - - spin_lock(&mp->m_perag_lock); - found = radix_tree_gang_lookup_tag(&mp->m_perag_tree, - (void **)&pag, *first, 1, tag); - if (found <= 0) { - spin_unlock(&mp->m_perag_lock); - return NULL; - } - *first = pag->pag_agno + 1; - /* open coded pag reference increment */ - ref = atomic_inc_return(&pag->pag_ref); - spin_unlock(&mp->m_perag_lock); - trace_xfs_perag_get_reclaim(mp, pag->pag_agno, ref, _RET_IP_); - } else { - pag = xfs_perag_get(mp, *first); - (*first)++; - } - return pag; -} - int xfs_inode_ag_iterator( struct xfs_mount *mp, int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag, int flags), - int flags, - int tag, - int exclusive, - int *nr_to_scan) + int flags) { struct xfs_perag *pag; int error = 0; int last_error = 0; xfs_agnumber_t ag; - int nr; - nr = nr_to_scan ? *nr_to_scan : INT_MAX; ag = 0; - while ((pag = xfs_inode_ag_iter_next_pag(mp, &ag, tag))) { - error = xfs_inode_ag_walk(mp, pag, execute, flags, tag, - exclusive, &nr); + while ((pag = xfs_perag_get(mp, ag))) { + ag = pag->pag_agno + 1; + error = xfs_inode_ag_walk(mp, pag, execute, flags); xfs_perag_put(pag); if (error) { last_error = error; if (error == EFSCORRUPTED) break; } - if (nr <= 0) - break; } - if (nr_to_scan) - *nr_to_scan = nr; return XFS_ERROR(last_error); } -/* must be called with pag_ici_lock held and releases it */ -int -xfs_sync_inode_valid( - struct xfs_inode *ip, - struct xfs_perag *pag) -{ - struct inode *inode = VFS_I(ip); - int error = EFSCORRUPTED; - - /* nothing to sync during shutdown */ - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) - goto out_unlock; - - /* avoid new or reclaimable inodes. Leave for reclaim code to flush */ - error = ENOENT; - if (xfs_iflags_test(ip, XFS_INEW | XFS_IRECLAIMABLE | XFS_IRECLAIM)) - goto out_unlock; - - /* If we can't grab the inode, it must on it's way to reclaim. */ - if (!igrab(inode)) - goto out_unlock; - - if (is_bad_inode(inode)) { - IRELE(ip); - goto out_unlock; - } - - /* inode is valid */ - error = 0; -out_unlock: - read_unlock(&pag->pag_ici_lock); - return error; -} - STATIC int xfs_sync_inode_data( struct xfs_inode *ip, @@ -258,10 +193,6 @@ xfs_sync_inode_data( struct address_space *mapping = inode->i_mapping; int error = 0; - error = xfs_sync_inode_valid(ip, pag); - if (error) - return error; - if (!mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) goto out_wait; @@ -278,7 +209,6 @@ xfs_sync_inode_data( out_wait: if (flags & SYNC_WAIT) xfs_ioend_wait(ip); - IRELE(ip); return error; } @@ -290,10 +220,6 @@ xfs_sync_inode_attr( { int error = 0; - error = xfs_sync_inode_valid(ip, pag); - if (error) - return error; - xfs_ilock(ip, XFS_ILOCK_SHARED); if (xfs_inode_clean(ip)) goto out_unlock; @@ -312,14 +238,13 @@ xfs_sync_inode_attr( out_unlock: xfs_iunlock(ip, XFS_ILOCK_SHARED); - IRELE(ip); return error; } /* * Write out pagecache data for the whole filesystem. */ -int +STATIC int xfs_sync_data( struct xfs_mount *mp, int flags) @@ -328,8 +253,7 @@ xfs_sync_data( ASSERT((flags & ~(SYNC_TRYLOCK|SYNC_WAIT)) == 0); - error = xfs_inode_ag_iterator(mp, xfs_sync_inode_data, flags, - XFS_ICI_NO_TAG, 0, NULL); + error = xfs_inode_ag_iterator(mp, xfs_sync_inode_data, flags); if (error) return XFS_ERROR(error); @@ -340,48 +264,14 @@ xfs_sync_data( /* * Write out inode metadata (attributes) for the whole filesystem. */ -int +STATIC int xfs_sync_attr( struct xfs_mount *mp, int flags) { ASSERT((flags & ~SYNC_WAIT) == 0); - return xfs_inode_ag_iterator(mp, xfs_sync_inode_attr, flags, - XFS_ICI_NO_TAG, 0, NULL); -} - -STATIC int -xfs_commit_dummy_trans( - struct xfs_mount *mp, - uint flags) -{ - struct xfs_inode *ip = mp->m_rootip; - struct xfs_trans *tp; - int error; - - /* - * Put a dummy transaction in the log to tell recovery - * that all others are OK. - */ - tp = xfs_trans_alloc(mp, XFS_TRANS_DUMMY1); - error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); - if (error) { - xfs_trans_cancel(tp, 0); - return error; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - - xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); - xfs_trans_ihold(tp, ip); - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - error = xfs_trans_commit(tp, 0); - xfs_iunlock(ip, XFS_ILOCK_EXCL); - - /* the log force ensures this transaction is pushed to disk */ - xfs_log_force(mp, (flags & SYNC_WAIT) ? XFS_LOG_SYNC : 0); - return error; + return xfs_inode_ag_iterator(mp, xfs_sync_inode_attr, flags); } STATIC int @@ -444,7 +334,7 @@ xfs_quiesce_data( /* mark the log as covered if needed */ if (xfs_log_need_covered(mp)) - error2 = xfs_commit_dummy_trans(mp, SYNC_WAIT); + error2 = xfs_fs_log_dummy(mp, SYNC_WAIT); /* flush data-only devices */ if (mp->m_rtdev_targp) @@ -575,7 +465,7 @@ xfs_flush_inodes( /* * Every sync period we need to unpin all items, reclaim inodes and sync * disk quotas. We might need to cover the log to indicate that the - * filesystem is idle. + * filesystem is idle and not frozen. */ STATIC void xfs_sync_worker( @@ -589,8 +479,9 @@ xfs_sync_worker( xfs_reclaim_inodes(mp, 0); /* dgc: errors ignored here */ error = xfs_qm_sync(mp, SYNC_TRYLOCK); - if (xfs_log_need_covered(mp)) - error = xfs_commit_dummy_trans(mp, 0); + if (mp->m_super->s_frozen == SB_UNFROZEN && + xfs_log_need_covered(mp)) + error = xfs_fs_log_dummy(mp, 0); } mp->m_sync_seq++; wake_up(&mp->m_wait_single_sync_task); @@ -710,14 +601,11 @@ xfs_inode_set_reclaim_tag( xfs_perag_put(pag); } -void -__xfs_inode_clear_reclaim_tag( - xfs_mount_t *mp, +STATIC void +__xfs_inode_clear_reclaim( xfs_perag_t *pag, xfs_inode_t *ip) { - radix_tree_tag_clear(&pag->pag_ici_root, - XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG); pag->pag_ici_reclaimable--; if (!pag->pag_ici_reclaimable) { /* clear the reclaim tag from the perag radix tree */ @@ -731,6 +619,54 @@ __xfs_inode_clear_reclaim_tag( } } +void +__xfs_inode_clear_reclaim_tag( + xfs_mount_t *mp, + xfs_perag_t *pag, + xfs_inode_t *ip) +{ + radix_tree_tag_clear(&pag->pag_ici_root, + XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG); + __xfs_inode_clear_reclaim(pag, ip); +} + +/* + * Grab the inode for reclaim exclusively. + * Return 0 if we grabbed it, non-zero otherwise. + */ +STATIC int +xfs_reclaim_inode_grab( + struct xfs_inode *ip, + int flags) +{ + + /* + * do some unlocked checks first to avoid unnecceary lock traffic. + * The first is a flush lock check, the second is a already in reclaim + * check. Only do these checks if we are not going to block on locks. + */ + if ((flags & SYNC_TRYLOCK) && + (!ip->i_flush.done || __xfs_iflags_test(ip, XFS_IRECLAIM))) { + return 1; + } + + /* + * The radix tree lock here protects a thread in xfs_iget from racing + * with us starting reclaim on the inode. Once we have the + * XFS_IRECLAIM flag set it will not touch us. + */ + spin_lock(&ip->i_flags_lock); + ASSERT_ALWAYS(__xfs_iflags_test(ip, XFS_IRECLAIMABLE)); + if (__xfs_iflags_test(ip, XFS_IRECLAIM)) { + /* ignore as it is already under reclaim */ + spin_unlock(&ip->i_flags_lock); + return 1; + } + __xfs_iflags_set(ip, XFS_IRECLAIM); + spin_unlock(&ip->i_flags_lock); + return 0; +} + /* * Inodes in different states need to be treated differently, and the return * value of xfs_iflush is not sufficient to get this right. The following table @@ -789,23 +725,6 @@ xfs_reclaim_inode( { int error = 0; - /* - * The radix tree lock here protects a thread in xfs_iget from racing - * with us starting reclaim on the inode. Once we have the - * XFS_IRECLAIM flag set it will not touch us. - */ - spin_lock(&ip->i_flags_lock); - ASSERT_ALWAYS(__xfs_iflags_test(ip, XFS_IRECLAIMABLE)); - if (__xfs_iflags_test(ip, XFS_IRECLAIM)) { - /* ignore as it is already under reclaim */ - spin_unlock(&ip->i_flags_lock); - write_unlock(&pag->pag_ici_lock); - return 0; - } - __xfs_iflags_set(ip, XFS_IRECLAIM); - spin_unlock(&ip->i_flags_lock); - write_unlock(&pag->pag_ici_lock); - xfs_ilock(ip, XFS_ILOCK_EXCL); if (!xfs_iflock_nowait(ip)) { if (!(sync_mode & SYNC_WAIT)) @@ -867,18 +786,161 @@ out: reclaim: xfs_ifunlock(ip); xfs_iunlock(ip, XFS_ILOCK_EXCL); - xfs_ireclaim(ip); + + XFS_STATS_INC(xs_ig_reclaims); + /* + * Remove the inode from the per-AG radix tree. + * + * Because radix_tree_delete won't complain even if the item was never + * added to the tree assert that it's been there before to catch + * problems with the inode life time early on. + */ + write_lock(&pag->pag_ici_lock); + if (!radix_tree_delete(&pag->pag_ici_root, + XFS_INO_TO_AGINO(ip->i_mount, ip->i_ino))) + ASSERT(0); + __xfs_inode_clear_reclaim(pag, ip); + write_unlock(&pag->pag_ici_lock); + + /* + * Here we do an (almost) spurious inode lock in order to coordinate + * with inode cache radix tree lookups. This is because the lookup + * can reference the inodes in the cache without taking references. + * + * We make that OK here by ensuring that we wait until the inode is + * unlocked after the lookup before we go ahead and free it. We get + * both the ilock and the iolock because the code may need to drop the + * ilock one but will still hold the iolock. + */ + xfs_ilock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); + xfs_qm_dqdetach(ip); + xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); + + xfs_inode_free(ip); return error; } +/* + * Walk the AGs and reclaim the inodes in them. Even if the filesystem is + * corrupted, we still want to try to reclaim all the inodes. If we don't, + * then a shut down during filesystem unmount reclaim walk leak all the + * unreclaimed inodes. + */ +int +xfs_reclaim_inodes_ag( + struct xfs_mount *mp, + int flags, + int *nr_to_scan) +{ + struct xfs_perag *pag; + int error = 0; + int last_error = 0; + xfs_agnumber_t ag; + int trylock = flags & SYNC_TRYLOCK; + int skipped; + +restart: + ag = 0; + skipped = 0; + while ((pag = xfs_perag_get_tag(mp, ag, XFS_ICI_RECLAIM_TAG))) { + unsigned long first_index = 0; + int done = 0; + int nr_found = 0; + + ag = pag->pag_agno + 1; + + if (trylock) { + if (!mutex_trylock(&pag->pag_ici_reclaim_lock)) { + skipped++; + continue; + } + first_index = pag->pag_ici_reclaim_cursor; + } else + mutex_lock(&pag->pag_ici_reclaim_lock); + + do { + struct xfs_inode *batch[XFS_LOOKUP_BATCH]; + int i; + + write_lock(&pag->pag_ici_lock); + nr_found = radix_tree_gang_lookup_tag( + &pag->pag_ici_root, + (void **)batch, first_index, + XFS_LOOKUP_BATCH, + XFS_ICI_RECLAIM_TAG); + if (!nr_found) { + write_unlock(&pag->pag_ici_lock); + break; + } + + /* + * Grab the inodes before we drop the lock. if we found + * nothing, nr == 0 and the loop will be skipped. + */ + for (i = 0; i < nr_found; i++) { + struct xfs_inode *ip = batch[i]; + + if (done || xfs_reclaim_inode_grab(ip, flags)) + batch[i] = NULL; + + /* + * Update the index for the next lookup. Catch + * overflows into the next AG range which can + * occur if we have inodes in the last block of + * the AG and we are currently pointing to the + * last inode. + */ + first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1); + if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) + done = 1; + } + + /* unlock now we've grabbed the inodes. */ + write_unlock(&pag->pag_ici_lock); + + for (i = 0; i < nr_found; i++) { + if (!batch[i]) + continue; + error = xfs_reclaim_inode(batch[i], pag, flags); + if (error && last_error != EFSCORRUPTED) + last_error = error; + } + + *nr_to_scan -= XFS_LOOKUP_BATCH; + + } while (nr_found && !done && *nr_to_scan > 0); + + if (trylock && !done) + pag->pag_ici_reclaim_cursor = first_index; + else + pag->pag_ici_reclaim_cursor = 0; + mutex_unlock(&pag->pag_ici_reclaim_lock); + xfs_perag_put(pag); + } + + /* + * if we skipped any AG, and we still have scan count remaining, do + * another pass this time using blocking reclaim semantics (i.e + * waiting on the reclaim locks and ignoring the reclaim cursors). This + * ensure that when we get more reclaimers than AGs we block rather + * than spin trying to execute reclaim. + */ + if (trylock && skipped && *nr_to_scan > 0) { + trylock = 0; + goto restart; + } + return XFS_ERROR(last_error); +} + int xfs_reclaim_inodes( xfs_mount_t *mp, int mode) { - return xfs_inode_ag_iterator(mp, xfs_reclaim_inode, mode, - XFS_ICI_RECLAIM_TAG, 1, NULL); + int nr_to_scan = INT_MAX; + + return xfs_reclaim_inodes_ag(mp, mode, &nr_to_scan); } /* @@ -900,17 +962,16 @@ xfs_reclaim_inode_shrink( if (!(gfp_mask & __GFP_FS)) return -1; - xfs_inode_ag_iterator(mp, xfs_reclaim_inode, 0, - XFS_ICI_RECLAIM_TAG, 1, &nr_to_scan); - /* if we don't exhaust the scan, don't bother coming back */ + xfs_reclaim_inodes_ag(mp, SYNC_TRYLOCK, &nr_to_scan); + /* terminate if we don't exhaust the scan */ if (nr_to_scan > 0) return -1; } reclaimable = 0; ag = 0; - while ((pag = xfs_inode_ag_iter_next_pag(mp, &ag, - XFS_ICI_RECLAIM_TAG))) { + while ((pag = xfs_perag_get_tag(mp, ag, XFS_ICI_RECLAIM_TAG))) { + ag = pag->pag_agno + 1; reclaimable += pag->pag_ici_reclaimable; xfs_perag_put(pag); } diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h index e28139aaa4a..32ba6628290 100644 --- a/fs/xfs/linux-2.6/xfs_sync.h +++ b/fs/xfs/linux-2.6/xfs_sync.h @@ -35,9 +35,6 @@ typedef struct xfs_sync_work { int xfs_syncd_init(struct xfs_mount *mp); void xfs_syncd_stop(struct xfs_mount *mp); -int xfs_sync_attr(struct xfs_mount *mp, int flags); -int xfs_sync_data(struct xfs_mount *mp, int flags); - int xfs_quiesce_data(struct xfs_mount *mp); void xfs_quiesce_attr(struct xfs_mount *mp); @@ -50,10 +47,10 @@ void __xfs_inode_set_reclaim_tag(struct xfs_perag *pag, struct xfs_inode *ip); void __xfs_inode_clear_reclaim_tag(struct xfs_mount *mp, struct xfs_perag *pag, struct xfs_inode *ip); -int xfs_sync_inode_valid(struct xfs_inode *ip, struct xfs_perag *pag); +int xfs_sync_inode_grab(struct xfs_inode *ip); int xfs_inode_ag_iterator(struct xfs_mount *mp, int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag, int flags), - int flags, int tag, int write_lock, int *nr_to_scan); + int flags); void xfs_inode_shrinker_register(struct xfs_mount *mp); void xfs_inode_shrinker_unregister(struct xfs_mount *mp); diff --git a/fs/xfs/linux-2.6/xfs_trace.c b/fs/xfs/linux-2.6/xfs_trace.c index d12be8470cb..88d25d4aa56 100644 --- a/fs/xfs/linux-2.6/xfs_trace.c +++ b/fs/xfs/linux-2.6/xfs_trace.c @@ -24,17 +24,13 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_da_btree.h" #include "xfs_bmap_btree.h" #include "xfs_alloc_btree.h" #include "xfs_ialloc_btree.h" -#include "xfs_dir2_sf.h" -#include "xfs_attr_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_btree.h" -#include "xfs_dmapi.h" #include "xfs_mount.h" #include "xfs_ialloc.h" #include "xfs_itable.h" diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h index 30282069090..acef2e98c59 100644 --- a/fs/xfs/linux-2.6/xfs_trace.h +++ b/fs/xfs/linux-2.6/xfs_trace.h @@ -124,7 +124,7 @@ DEFINE_EVENT(xfs_perag_class, name, \ unsigned long caller_ip), \ TP_ARGS(mp, agno, refcount, caller_ip)) DEFINE_PERAG_REF_EVENT(xfs_perag_get); -DEFINE_PERAG_REF_EVENT(xfs_perag_get_reclaim); +DEFINE_PERAG_REF_EVENT(xfs_perag_get_tag); DEFINE_PERAG_REF_EVENT(xfs_perag_put); DEFINE_PERAG_REF_EVENT(xfs_perag_set_reclaim); DEFINE_PERAG_REF_EVENT(xfs_perag_clear_reclaim); @@ -317,8 +317,6 @@ DEFINE_BUF_EVENT(xfs_buf_init); DEFINE_BUF_EVENT(xfs_buf_free); DEFINE_BUF_EVENT(xfs_buf_hold); DEFINE_BUF_EVENT(xfs_buf_rele); -DEFINE_BUF_EVENT(xfs_buf_pin); -DEFINE_BUF_EVENT(xfs_buf_unpin); DEFINE_BUF_EVENT(xfs_buf_iodone); DEFINE_BUF_EVENT(xfs_buf_iorequest); DEFINE_BUF_EVENT(xfs_buf_bawrite); @@ -327,13 +325,12 @@ DEFINE_BUF_EVENT(xfs_buf_lock); DEFINE_BUF_EVENT(xfs_buf_lock_done); DEFINE_BUF_EVENT(xfs_buf_cond_lock); DEFINE_BUF_EVENT(xfs_buf_unlock); -DEFINE_BUF_EVENT(xfs_buf_ordered_retry); DEFINE_BUF_EVENT(xfs_buf_iowait); DEFINE_BUF_EVENT(xfs_buf_iowait_done); DEFINE_BUF_EVENT(xfs_buf_delwri_queue); DEFINE_BUF_EVENT(xfs_buf_delwri_dequeue); DEFINE_BUF_EVENT(xfs_buf_delwri_split); -DEFINE_BUF_EVENT(xfs_buf_get_noaddr); +DEFINE_BUF_EVENT(xfs_buf_get_uncached); DEFINE_BUF_EVENT(xfs_bdstrat_shut); DEFINE_BUF_EVENT(xfs_buf_item_relse); DEFINE_BUF_EVENT(xfs_buf_item_iodone); @@ -541,7 +538,7 @@ DEFINE_LOCK_EVENT(xfs_ilock_nowait); DEFINE_LOCK_EVENT(xfs_ilock_demote); DEFINE_LOCK_EVENT(xfs_iunlock); -DECLARE_EVENT_CLASS(xfs_iget_class, +DECLARE_EVENT_CLASS(xfs_inode_class, TP_PROTO(struct xfs_inode *ip), TP_ARGS(ip), TP_STRUCT__entry( @@ -557,16 +554,38 @@ DECLARE_EVENT_CLASS(xfs_iget_class, __entry->ino) ) -#define DEFINE_IGET_EVENT(name) \ -DEFINE_EVENT(xfs_iget_class, name, \ +#define DEFINE_INODE_EVENT(name) \ +DEFINE_EVENT(xfs_inode_class, name, \ TP_PROTO(struct xfs_inode *ip), \ TP_ARGS(ip)) -DEFINE_IGET_EVENT(xfs_iget_skip); -DEFINE_IGET_EVENT(xfs_iget_reclaim); -DEFINE_IGET_EVENT(xfs_iget_found); -DEFINE_IGET_EVENT(xfs_iget_alloc); - -DECLARE_EVENT_CLASS(xfs_inode_class, +DEFINE_INODE_EVENT(xfs_iget_skip); +DEFINE_INODE_EVENT(xfs_iget_reclaim); +DEFINE_INODE_EVENT(xfs_iget_reclaim_fail); +DEFINE_INODE_EVENT(xfs_iget_hit); +DEFINE_INODE_EVENT(xfs_iget_miss); + +DEFINE_INODE_EVENT(xfs_getattr); +DEFINE_INODE_EVENT(xfs_setattr); +DEFINE_INODE_EVENT(xfs_readlink); +DEFINE_INODE_EVENT(xfs_alloc_file_space); +DEFINE_INODE_EVENT(xfs_free_file_space); +DEFINE_INODE_EVENT(xfs_readdir); +#ifdef CONFIG_XFS_POSIX_ACL +DEFINE_INODE_EVENT(xfs_check_acl); +#endif +DEFINE_INODE_EVENT(xfs_vm_bmap); +DEFINE_INODE_EVENT(xfs_file_ioctl); +DEFINE_INODE_EVENT(xfs_file_compat_ioctl); +DEFINE_INODE_EVENT(xfs_ioctl_setattr); +DEFINE_INODE_EVENT(xfs_file_fsync); +DEFINE_INODE_EVENT(xfs_destroy_inode); +DEFINE_INODE_EVENT(xfs_write_inode); +DEFINE_INODE_EVENT(xfs_evict_inode); + +DEFINE_INODE_EVENT(xfs_dquot_dqalloc); +DEFINE_INODE_EVENT(xfs_dquot_dqdetach); + +DECLARE_EVENT_CLASS(xfs_iref_class, TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip), TP_ARGS(ip, caller_ip), TP_STRUCT__entry( @@ -591,20 +610,71 @@ DECLARE_EVENT_CLASS(xfs_inode_class, (char *)__entry->caller_ip) ) -#define DEFINE_INODE_EVENT(name) \ -DEFINE_EVENT(xfs_inode_class, name, \ +#define DEFINE_IREF_EVENT(name) \ +DEFINE_EVENT(xfs_iref_class, name, \ TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip), \ TP_ARGS(ip, caller_ip)) -DEFINE_INODE_EVENT(xfs_ihold); -DEFINE_INODE_EVENT(xfs_irele); -DEFINE_INODE_EVENT(xfs_inode_pin); -DEFINE_INODE_EVENT(xfs_inode_unpin); -DEFINE_INODE_EVENT(xfs_inode_unpin_nowait); +DEFINE_IREF_EVENT(xfs_ihold); +DEFINE_IREF_EVENT(xfs_irele); +DEFINE_IREF_EVENT(xfs_inode_pin); +DEFINE_IREF_EVENT(xfs_inode_unpin); +DEFINE_IREF_EVENT(xfs_inode_unpin_nowait); + +DECLARE_EVENT_CLASS(xfs_namespace_class, + TP_PROTO(struct xfs_inode *dp, struct xfs_name *name), + TP_ARGS(dp, name), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, dp_ino) + __dynamic_array(char, name, name->len) + ), + TP_fast_assign( + __entry->dev = VFS_I(dp)->i_sb->s_dev; + __entry->dp_ino = dp->i_ino; + memcpy(__get_str(name), name->name, name->len); + ), + TP_printk("dev %d:%d dp ino 0x%llx name %s", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->dp_ino, + __get_str(name)) +) -/* the old xfs_itrace_entry tracer - to be replaced by s.th. in the VFS */ -DEFINE_INODE_EVENT(xfs_inode); -#define xfs_itrace_entry(ip) \ - trace_xfs_inode(ip, _THIS_IP_) +#define DEFINE_NAMESPACE_EVENT(name) \ +DEFINE_EVENT(xfs_namespace_class, name, \ + TP_PROTO(struct xfs_inode *dp, struct xfs_name *name), \ + TP_ARGS(dp, name)) +DEFINE_NAMESPACE_EVENT(xfs_remove); +DEFINE_NAMESPACE_EVENT(xfs_link); +DEFINE_NAMESPACE_EVENT(xfs_lookup); +DEFINE_NAMESPACE_EVENT(xfs_create); +DEFINE_NAMESPACE_EVENT(xfs_symlink); + +TRACE_EVENT(xfs_rename, + TP_PROTO(struct xfs_inode *src_dp, struct xfs_inode *target_dp, + struct xfs_name *src_name, struct xfs_name *target_name), + TP_ARGS(src_dp, target_dp, src_name, target_name), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, src_dp_ino) + __field(xfs_ino_t, target_dp_ino) + __dynamic_array(char, src_name, src_name->len) + __dynamic_array(char, target_name, target_name->len) + ), + TP_fast_assign( + __entry->dev = VFS_I(src_dp)->i_sb->s_dev; + __entry->src_dp_ino = src_dp->i_ino; + __entry->target_dp_ino = target_dp->i_ino; + memcpy(__get_str(src_name), src_name->name, src_name->len); + memcpy(__get_str(target_name), target_name->name, target_name->len); + ), + TP_printk("dev %d:%d src dp ino 0x%llx target dp ino 0x%llx" + " src name %s target name %s", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->src_dp_ino, + __entry->target_dp_ino, + __get_str(src_name), + __get_str(target_name)) +) DECLARE_EVENT_CLASS(xfs_dquot_class, TP_PROTO(struct xfs_dquot *dqp), @@ -684,9 +754,6 @@ DEFINE_DQUOT_EVENT(xfs_dqrele); DEFINE_DQUOT_EVENT(xfs_dqflush); DEFINE_DQUOT_EVENT(xfs_dqflush_force); DEFINE_DQUOT_EVENT(xfs_dqflush_done); -/* not really iget events, but we re-use the format */ -DEFINE_IGET_EVENT(xfs_dquot_dqalloc); -DEFINE_IGET_EVENT(xfs_dquot_dqdetach); DECLARE_EVENT_CLASS(xfs_loggrant_class, TP_PROTO(struct log *log, struct xlog_ticket *tic), @@ -834,33 +901,29 @@ DECLARE_EVENT_CLASS(xfs_page_class, __field(loff_t, size) __field(unsigned long, offset) __field(int, delalloc) - __field(int, unmapped) __field(int, unwritten) ), TP_fast_assign( - int delalloc = -1, unmapped = -1, unwritten = -1; + int delalloc = -1, unwritten = -1; if (page_has_buffers(page)) - xfs_count_page_state(page, &delalloc, - &unmapped, &unwritten); + xfs_count_page_state(page, &delalloc, &unwritten); __entry->dev = inode->i_sb->s_dev; __entry->ino = XFS_I(inode)->i_ino; __entry->pgoff = page_offset(page); __entry->size = i_size_read(inode); __entry->offset = off; __entry->delalloc = delalloc; - __entry->unmapped = unmapped; __entry->unwritten = unwritten; ), TP_printk("dev %d:%d ino 0x%llx pgoff 0x%lx size 0x%llx offset %lx " - "delalloc %d unmapped %d unwritten %d", + "delalloc %d unwritten %d", MAJOR(__entry->dev), MINOR(__entry->dev), __entry->ino, __entry->pgoff, __entry->size, __entry->offset, __entry->delalloc, - __entry->unmapped, __entry->unwritten) ) diff --git a/fs/xfs/linux-2.6/xfs_version.h b/fs/xfs/linux-2.6/xfs_version.h deleted file mode 100644 index f8d279d7563..00000000000 --- a/fs/xfs/linux-2.6/xfs_version.h +++ /dev/null @@ -1,29 +0,0 @@ -/* - * Copyright (c) 2001-2002,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_VERSION_H__ -#define __XFS_VERSION_H__ - -/* - * Dummy file that can contain a timestamp to put into the - * XFS init string, to help users keep track of what they're - * running - */ - -#define XFS_VERSION_STRING "SGI XFS" - -#endif /* __XFS_VERSION_H__ */ |