From 7988613b0e5b2638caf6cd493cc78e9595eba19c Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Sat, 23 Nov 2013 17:19:00 -0800 Subject: block: Convert bio_for_each_segment() to bvec_iter More prep work for immutable biovecs - with immutable bvecs drivers won't be able to use the biovec directly, they'll need to use helpers that take into account bio->bi_iter.bi_bvec_done. This updates callers for the new usage without changing the implementation yet. Signed-off-by: Kent Overstreet Cc: Jens Axboe Cc: Geert Uytterhoeven Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: "Ed L. Cashin" Cc: Nick Piggin Cc: Lars Ellenberg Cc: Jiri Kosina Cc: Paul Clements Cc: Jim Paris Cc: Geoff Levand Cc: Yehuda Sadeh Cc: Sage Weil Cc: Alex Elder Cc: ceph-devel@vger.kernel.org Cc: Joshua Morris Cc: Philip Kelleher Cc: Konrad Rzeszutek Wilk Cc: Jeremy Fitzhardinge Cc: Neil Brown Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: linux390@de.ibm.com Cc: Nagalakshmi Nandigama Cc: Sreekanth Reddy Cc: support@lsi.com Cc: "James E.J. Bottomley" Cc: Greg Kroah-Hartman Cc: Alexander Viro Cc: Steven Whitehouse Cc: Herton Ronaldo Krzesinski Cc: Tejun Heo Cc: Andrew Morton Cc: Guo Chao Cc: Asai Thambi S P Cc: Selvan Mani Cc: Sam Bradshaw Cc: Matthew Wilcox Cc: Keith Busch Cc: Stephen Hemminger Cc: Quoc-Son Anh Cc: Sebastian Ott Cc: Nitin Gupta Cc: Minchan Kim Cc: Jerome Marchand Cc: Seth Jennings Cc: "Martin K. Petersen" Cc: Mike Snitzer Cc: Vivek Goyal Cc: "Darrick J. Wong" Cc: Chris Metcalf Cc: Jan Kara Cc: linux-m68k@lists.linux-m68k.org Cc: linuxppc-dev@lists.ozlabs.org Cc: drbd-user@lists.linbit.com Cc: nbd-general@lists.sourceforge.net Cc: cbe-oss-dev@lists.ozlabs.org Cc: xen-devel@lists.xensource.com Cc: virtualization@lists.linux-foundation.org Cc: linux-raid@vger.kernel.org Cc: linux-s390@vger.kernel.org Cc: DL-MPTFusionLinux@lsi.com Cc: linux-scsi@vger.kernel.org Cc: devel@driverdev.osuosl.org Cc: linux-fsdevel@vger.kernel.org Cc: cluster-devel@redhat.com Cc: linux-mm@kvack.org Acked-by: Geoff Levand --- drivers/s390/block/dasd_eckd.c | 48 +++++++++++++++++++++--------------------- 1 file changed, 24 insertions(+), 24 deletions(-) (limited to 'drivers/s390/block/dasd_eckd.c') diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index cee7e2708a1..70d17701732 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -2551,7 +2551,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single( struct dasd_ccw_req *cqr; struct ccw1 *ccw; struct req_iterator iter; - struct bio_vec *bv; + struct bio_vec bv; char *dst; unsigned int off; int count, cidaw, cplength, datasize; @@ -2573,13 +2573,13 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single( count = 0; cidaw = 0; rq_for_each_segment(bv, req, iter) { - if (bv->bv_len & (blksize - 1)) + if (bv.bv_len & (blksize - 1)) /* Eckd can only do full blocks. */ return ERR_PTR(-EINVAL); - count += bv->bv_len >> (block->s2b_shift + 9); + count += bv.bv_len >> (block->s2b_shift + 9); #if defined(CONFIG_64BIT) - if (idal_is_needed (page_address(bv->bv_page), bv->bv_len)) - cidaw += bv->bv_len >> (block->s2b_shift + 9); + if (idal_is_needed (page_address(bv.bv_page), bv.bv_len)) + cidaw += bv.bv_len >> (block->s2b_shift + 9); #endif } /* Paranoia. */ @@ -2650,16 +2650,16 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single( last_rec - recid + 1, cmd, basedev, blksize); } rq_for_each_segment(bv, req, iter) { - dst = page_address(bv->bv_page) + bv->bv_offset; + dst = page_address(bv.bv_page) + bv.bv_offset; if (dasd_page_cache) { char *copy = kmem_cache_alloc(dasd_page_cache, GFP_DMA | __GFP_NOWARN); if (copy && rq_data_dir(req) == WRITE) - memcpy(copy + bv->bv_offset, dst, bv->bv_len); + memcpy(copy + bv.bv_offset, dst, bv.bv_len); if (copy) - dst = copy + bv->bv_offset; + dst = copy + bv.bv_offset; } - for (off = 0; off < bv->bv_len; off += blksize) { + for (off = 0; off < bv.bv_len; off += blksize) { sector_t trkid = recid; unsigned int recoffs = sector_div(trkid, blk_per_trk); rcmd = cmd; @@ -2735,7 +2735,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track( struct dasd_ccw_req *cqr; struct ccw1 *ccw; struct req_iterator iter; - struct bio_vec *bv; + struct bio_vec bv; char *dst, *idaw_dst; unsigned int cidaw, cplength, datasize; unsigned int tlf; @@ -2813,8 +2813,8 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track( idaw_dst = NULL; idaw_len = 0; rq_for_each_segment(bv, req, iter) { - dst = page_address(bv->bv_page) + bv->bv_offset; - seg_len = bv->bv_len; + dst = page_address(bv.bv_page) + bv.bv_offset; + seg_len = bv.bv_len; while (seg_len) { if (new_track) { trkid = recid; @@ -3039,7 +3039,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track( { struct dasd_ccw_req *cqr; struct req_iterator iter; - struct bio_vec *bv; + struct bio_vec bv; char *dst; unsigned int trkcount, ctidaw; unsigned char cmd; @@ -3125,8 +3125,8 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track( new_track = 1; recid = first_rec; rq_for_each_segment(bv, req, iter) { - dst = page_address(bv->bv_page) + bv->bv_offset; - seg_len = bv->bv_len; + dst = page_address(bv.bv_page) + bv.bv_offset; + seg_len = bv.bv_len; while (seg_len) { if (new_track) { trkid = recid; @@ -3158,9 +3158,9 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track( } } else { rq_for_each_segment(bv, req, iter) { - dst = page_address(bv->bv_page) + bv->bv_offset; + dst = page_address(bv.bv_page) + bv.bv_offset; last_tidaw = itcw_add_tidaw(itcw, 0x00, - dst, bv->bv_len); + dst, bv.bv_len); if (IS_ERR(last_tidaw)) { ret = -EINVAL; goto out_error; @@ -3276,7 +3276,7 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev, struct dasd_ccw_req *cqr; struct ccw1 *ccw; struct req_iterator iter; - struct bio_vec *bv; + struct bio_vec bv; char *dst; unsigned char cmd; unsigned int trkcount; @@ -3376,8 +3376,8 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev, idaws = idal_create_words(idaws, rawpadpage, PAGE_SIZE); } rq_for_each_segment(bv, req, iter) { - dst = page_address(bv->bv_page) + bv->bv_offset; - seg_len = bv->bv_len; + dst = page_address(bv.bv_page) + bv.bv_offset; + seg_len = bv.bv_len; if (cmd == DASD_ECKD_CCW_READ_TRACK) memset(dst, 0, seg_len); if (!len_to_track_end) { @@ -3422,7 +3422,7 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req) struct dasd_eckd_private *private; struct ccw1 *ccw; struct req_iterator iter; - struct bio_vec *bv; + struct bio_vec bv; char *dst, *cda; unsigned int blksize, blk_per_trk, off; sector_t recid; @@ -3440,8 +3440,8 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req) if (private->uses_cdl == 0 || recid > 2*blk_per_trk) ccw++; rq_for_each_segment(bv, req, iter) { - dst = page_address(bv->bv_page) + bv->bv_offset; - for (off = 0; off < bv->bv_len; off += blksize) { + dst = page_address(bv.bv_page) + bv.bv_offset; + for (off = 0; off < bv.bv_len; off += blksize) { /* Skip locate record. */ if (private->uses_cdl && recid <= 2*blk_per_trk) ccw++; @@ -3452,7 +3452,7 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req) cda = (char *)((addr_t) ccw->cda); if (dst != cda) { if (rq_data_dir(req) == READ) - memcpy(dst, cda, bv->bv_len); + memcpy(dst, cda, bv.bv_len); kmem_cache_free(dasd_page_cache, (void *)((addr_t)cda & PAGE_MASK)); } -- cgit v1.2.3