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authorLinus Torvalds <torvalds@linux-foundation.org>2009-07-10 14:29:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-07-10 14:29:58 -0700
commit69ca06c9454169c4a9303e8834adae9080f94859 (patch)
treed713fe8ac3ada06c0989706e237f6e6176396347 /fs
parent9f2d8be4266f8861af806d964ae5db2949b670f3 (diff)
parent32f2e807a3938b24d0831211e6094f9e44b2fc83 (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: cfq-iosched: reset oom_cfqq in cfq_set_request() block: fix sg SG_DXFER_TO_FROM_DEV regression block: call blk_scsi_ioctl_init() Fix congestion_wait() sync/async vs read/write confusion
Diffstat (limited to 'fs')
-rw-r--r--fs/bio.c22
-rw-r--r--fs/fat/file.c2
-rw-r--r--fs/fuse/dev.c8
-rw-r--r--fs/nfs/write.c8
-rw-r--r--fs/reiserfs/journal.c2
-rw-r--r--fs/xfs/linux-2.6/kmem.c4
-rw-r--r--fs/xfs/linux-2.6/xfs_buf.c2
7 files changed, 26 insertions, 22 deletions
diff --git a/fs/bio.c b/fs/bio.c
index 1486b19fc43..76738005c8e 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -705,14 +705,13 @@ static struct bio_map_data *bio_alloc_map_data(int nr_segs, int iov_count,
}
static int __bio_copy_iov(struct bio *bio, struct bio_vec *iovecs,
- struct sg_iovec *iov, int iov_count, int uncopy,
- int do_free_page)
+ struct sg_iovec *iov, int iov_count,
+ int to_user, int from_user, int do_free_page)
{
int ret = 0, i;
struct bio_vec *bvec;
int iov_idx = 0;
unsigned int iov_off = 0;
- int read = bio_data_dir(bio) == READ;
__bio_for_each_segment(bvec, bio, i, 0) {
char *bv_addr = page_address(bvec->bv_page);
@@ -727,13 +726,14 @@ static int __bio_copy_iov(struct bio *bio, struct bio_vec *iovecs,
iov_addr = iov[iov_idx].iov_base + iov_off;
if (!ret) {
- if (!read && !uncopy)
- ret = copy_from_user(bv_addr, iov_addr,
- bytes);
- if (read && uncopy)
+ if (to_user)
ret = copy_to_user(iov_addr, bv_addr,
bytes);
+ if (from_user)
+ ret = copy_from_user(bv_addr, iov_addr,
+ bytes);
+
if (ret)
ret = -EFAULT;
}
@@ -770,7 +770,8 @@ int bio_uncopy_user(struct bio *bio)
if (!bio_flagged(bio, BIO_NULL_MAPPED))
ret = __bio_copy_iov(bio, bmd->iovecs, bmd->sgvecs,
- bmd->nr_sgvecs, 1, bmd->is_our_pages);
+ bmd->nr_sgvecs, bio_data_dir(bio) == READ,
+ 0, bmd->is_our_pages);
bio_free_map_data(bmd);
bio_put(bio);
return ret;
@@ -875,8 +876,9 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
/*
* success
*/
- if (!write_to_vm && (!map_data || !map_data->null_mapped)) {
- ret = __bio_copy_iov(bio, bio->bi_io_vec, iov, iov_count, 0, 0);
+ if ((!write_to_vm && (!map_data || !map_data->null_mapped)) ||
+ (map_data && map_data->from_user)) {
+ ret = __bio_copy_iov(bio, bio->bi_io_vec, iov, iov_count, 0, 1, 0);
if (ret)
goto cleanup;
}
diff --git a/fs/fat/file.c b/fs/fat/file.c
index b28ea646ff6..f042b965c95 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -134,7 +134,7 @@ static int fat_file_release(struct inode *inode, struct file *filp)
if ((filp->f_mode & FMODE_WRITE) &&
MSDOS_SB(inode->i_sb)->options.flush) {
fat_flush_inodes(inode->i_sb, inode, NULL);
- congestion_wait(WRITE, HZ/10);
+ congestion_wait(BLK_RW_ASYNC, HZ/10);
}
return 0;
}
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index f58ecbc416c..6484eb75acd 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -286,8 +286,8 @@ __releases(&fc->lock)
}
if (fc->num_background == FUSE_CONGESTION_THRESHOLD &&
fc->connected && fc->bdi_initialized) {
- clear_bdi_congested(&fc->bdi, READ);
- clear_bdi_congested(&fc->bdi, WRITE);
+ clear_bdi_congested(&fc->bdi, BLK_RW_SYNC);
+ clear_bdi_congested(&fc->bdi, BLK_RW_ASYNC);
}
fc->num_background--;
fc->active_background--;
@@ -414,8 +414,8 @@ static void fuse_request_send_nowait_locked(struct fuse_conn *fc,
fc->blocked = 1;
if (fc->num_background == FUSE_CONGESTION_THRESHOLD &&
fc->bdi_initialized) {
- set_bdi_congested(&fc->bdi, READ);
- set_bdi_congested(&fc->bdi, WRITE);
+ set_bdi_congested(&fc->bdi, BLK_RW_SYNC);
+ set_bdi_congested(&fc->bdi, BLK_RW_ASYNC);
}
list_add_tail(&req->list, &fc->bg_queue);
flush_bg_queue(fc);
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index ce728829f79..0a0a2ff767c 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -202,8 +202,10 @@ static int nfs_set_page_writeback(struct page *page)
struct nfs_server *nfss = NFS_SERVER(inode);
if (atomic_long_inc_return(&nfss->writeback) >
- NFS_CONGESTION_ON_THRESH)
- set_bdi_congested(&nfss->backing_dev_info, WRITE);
+ NFS_CONGESTION_ON_THRESH) {
+ set_bdi_congested(&nfss->backing_dev_info,
+ BLK_RW_ASYNC);
+ }
}
return ret;
}
@@ -215,7 +217,7 @@ static void nfs_end_page_writeback(struct page *page)
end_page_writeback(page);
if (atomic_long_dec_return(&nfss->writeback) < NFS_CONGESTION_OFF_THRESH)
- clear_bdi_congested(&nfss->backing_dev_info, WRITE);
+ clear_bdi_congested(&nfss->backing_dev_info, BLK_RW_ASYNC);
}
/*
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 77f5bb746bf..90622200b39 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -997,7 +997,7 @@ static int reiserfs_async_progress_wait(struct super_block *s)
DEFINE_WAIT(wait);
struct reiserfs_journal *j = SB_JOURNAL(s);
if (atomic_read(&j->j_async_throttle))
- congestion_wait(WRITE, HZ / 10);
+ congestion_wait(BLK_RW_ASYNC, HZ / 10);
return 0;
}
diff --git a/fs/xfs/linux-2.6/kmem.c b/fs/xfs/linux-2.6/kmem.c
index 1cd3b55ee3d..2d3f90afe5f 100644
--- a/fs/xfs/linux-2.6/kmem.c
+++ b/fs/xfs/linux-2.6/kmem.c
@@ -53,7 +53,7 @@ kmem_alloc(size_t size, unsigned int __nocast flags)
printk(KERN_ERR "XFS: possible memory allocation "
"deadlock in %s (mode:0x%x)\n",
__func__, lflags);
- congestion_wait(WRITE, HZ/50);
+ congestion_wait(BLK_RW_ASYNC, HZ/50);
} while (1);
}
@@ -130,7 +130,7 @@ kmem_zone_alloc(kmem_zone_t *zone, unsigned int __nocast flags)
printk(KERN_ERR "XFS: possible memory allocation "
"deadlock in %s (mode:0x%x)\n",
__func__, lflags);
- congestion_wait(WRITE, HZ/50);
+ congestion_wait(BLK_RW_ASYNC, HZ/50);
} while (1);
}
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 1418b916fc2..0c93c7ef3d1 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -412,7 +412,7 @@ _xfs_buf_lookup_pages(
XFS_STATS_INC(xb_page_retries);
xfsbufd_wakeup(0, gfp_mask);
- congestion_wait(WRITE, HZ/50);
+ congestion_wait(BLK_RW_ASYNC, HZ/50);
goto retry;
}