diff options
author | Kent Overstreet <kmo@daterainc.com> | 2013-11-24 01:19:00 (GMT) |
---|---|---|
committer | Kent Overstreet <kmo@daterainc.com> | 2013-11-24 06:33:49 (GMT) |
commit | 7988613b0e5b2638caf6cd493cc78e9595eba19c (patch) | |
tree | cc9fc4e235278035313ee32940740f61269f8fb3 /drivers/s390/block | |
parent | a4ad39b1d10584dfcfcfb0d510faab2c7f034399 (diff) | |
download | linux-7988613b0e5b2638caf6cd493cc78e9595eba19c.tar.xz |
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 <kmo@daterainc.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "Ed L. Cashin" <ecashin@coraid.com>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Lars Ellenberg <drbd-dev@lists.linbit.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Paul Clements <Paul.Clements@steeleye.com>
Cc: Jim Paris <jim@jtan.com>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Yehuda Sadeh <yehuda@inktank.com>
Cc: Sage Weil <sage@inktank.com>
Cc: Alex Elder <elder@inktank.com>
Cc: ceph-devel@vger.kernel.org
Cc: Joshua Morris <josh.h.morris@us.ibm.com>
Cc: Philip Kelleher <pjk1939@linux.vnet.ibm.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux390@de.ibm.com
Cc: Nagalakshmi Nandigama <Nagalakshmi.Nandigama@lsi.com>
Cc: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Cc: support@lsi.com
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Guo Chao <yan@linux.vnet.ibm.com>
Cc: Asai Thambi S P <asamymuthupa@micron.com>
Cc: Selvan Mani <smani@micron.com>
Cc: Sam Bradshaw <sbradshaw@micron.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: Quoc-Son Anh <quoc-sonx.anh@intel.com>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Seth Jennings <sjenning@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Jan Kara <jack@suse.cz>
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 <geoff@infradead.org>
Diffstat (limited to 'drivers/s390/block')
-rw-r--r-- | drivers/s390/block/dasd_diag.c | 10 | ||||
-rw-r--r-- | drivers/s390/block/dasd_eckd.c | 48 | ||||
-rw-r--r-- | drivers/s390/block/dasd_fba.c | 26 | ||||
-rw-r--r-- | drivers/s390/block/dcssblk.c | 16 | ||||
-rw-r--r-- | drivers/s390/block/scm_blk.c | 8 | ||||
-rw-r--r-- | drivers/s390/block/scm_blk_cluster.c | 4 | ||||
-rw-r--r-- | drivers/s390/block/xpram.c | 10 |
7 files changed, 61 insertions, 61 deletions
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c index 92bd22c..9cbc567 100644 --- a/drivers/s390/block/dasd_diag.c +++ b/drivers/s390/block/dasd_diag.c @@ -504,7 +504,7 @@ static struct dasd_ccw_req *dasd_diag_build_cp(struct dasd_device *memdev, struct dasd_diag_req *dreq; struct dasd_diag_bio *dbio; struct req_iterator iter; - struct bio_vec *bv; + struct bio_vec bv; char *dst; unsigned int count, datasize; sector_t recid, first_rec, last_rec; @@ -525,10 +525,10 @@ static struct dasd_ccw_req *dasd_diag_build_cp(struct dasd_device *memdev, /* Check struct bio and count the number of blocks for the request. */ count = 0; rq_for_each_segment(bv, req, iter) { - if (bv->bv_len & (blksize - 1)) + if (bv.bv_len & (blksize - 1)) /* Fba 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); } /* Paranoia. */ if (count != last_rec - first_rec + 1) @@ -545,8 +545,8 @@ static struct dasd_ccw_req *dasd_diag_build_cp(struct dasd_device *memdev, dbio = dreq->bio; recid = first_rec; 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) { memset(dbio, 0, sizeof (struct dasd_diag_bio)); dbio->type = rw_cmd; dbio->block_number = recid + 1; diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index cee7e27..70d1770 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)); } diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c index 9cbc8c3..2c8e68b 100644 --- a/drivers/s390/block/dasd_fba.c +++ b/drivers/s390/block/dasd_fba.c @@ -260,7 +260,7 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev, struct dasd_ccw_req *cqr; struct ccw1 *ccw; struct req_iterator iter; - struct bio_vec *bv; + struct bio_vec bv; char *dst; int count, cidaw, cplength, datasize; sector_t recid, first_rec, last_rec; @@ -283,13 +283,13 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev, count = 0; cidaw = 0; rq_for_each_segment(bv, req, iter) { - if (bv->bv_len & (blksize - 1)) + if (bv.bv_len & (blksize - 1)) /* Fba 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 / blksize; + if (idal_is_needed (page_address(bv.bv_page), bv.bv_len)) + cidaw += bv.bv_len / blksize; #endif } /* Paranoia. */ @@ -326,16 +326,16 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev, } recid = first_rec; 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) { /* Locate record for stupid devices. */ if (private->rdc_data.mode.bits.data_chain == 0) { ccw[-1].flags |= CCW_FLAG_CC; @@ -384,7 +384,7 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req) struct dasd_fba_private *private; struct ccw1 *ccw; struct req_iterator iter; - struct bio_vec *bv; + struct bio_vec bv; char *dst, *cda; unsigned int blksize, off; int status; @@ -399,8 +399,8 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req) if (private->rdc_data.mode.bits.data_chain != 0) 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->rdc_data.mode.bits.data_chain == 0) ccw++; @@ -411,7 +411,7 @@ dasd_fba_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)); } diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 16814a8..ebf41e2 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -808,12 +808,12 @@ static void dcssblk_make_request(struct request_queue *q, struct bio *bio) { struct dcssblk_dev_info *dev_info; - struct bio_vec *bvec; + struct bio_vec bvec; + struct bvec_iter iter; unsigned long index; unsigned long page_addr; unsigned long source_addr; unsigned long bytes_done; - int i; bytes_done = 0; dev_info = bio->bi_bdev->bd_disk->private_data; @@ -844,21 +844,21 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio) } index = (bio->bi_iter.bi_sector >> 3); - bio_for_each_segment(bvec, bio, i) { + bio_for_each_segment(bvec, bio, iter) { page_addr = (unsigned long) - page_address(bvec->bv_page) + bvec->bv_offset; + page_address(bvec.bv_page) + bvec.bv_offset; source_addr = dev_info->start + (index<<12) + bytes_done; - if (unlikely((page_addr & 4095) != 0) || (bvec->bv_len & 4095) != 0) + if (unlikely((page_addr & 4095) != 0) || (bvec.bv_len & 4095) != 0) // More paranoia. goto fail; if (bio_data_dir(bio) == READ) { memcpy((void*)page_addr, (void*)source_addr, - bvec->bv_len); + bvec.bv_len); } else { memcpy((void*)source_addr, (void*)page_addr, - bvec->bv_len); + bvec.bv_len); } - bytes_done += bvec->bv_len; + bytes_done += bvec.bv_len; } bio_endio(bio, 0); return; diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c index d0ab501..76bed17 100644 --- a/drivers/s390/block/scm_blk.c +++ b/drivers/s390/block/scm_blk.c @@ -130,7 +130,7 @@ static void scm_request_prepare(struct scm_request *scmrq) struct aidaw *aidaw = scmrq->aidaw; struct msb *msb = &scmrq->aob->msb[0]; struct req_iterator iter; - struct bio_vec *bv; + struct bio_vec bv; msb->bs = MSB_BS_4K; scmrq->aob->request.msb_count = 1; @@ -142,9 +142,9 @@ static void scm_request_prepare(struct scm_request *scmrq) msb->data_addr = (u64) aidaw; rq_for_each_segment(bv, scmrq->request, iter) { - WARN_ON(bv->bv_offset); - msb->blk_count += bv->bv_len >> 12; - aidaw->data_addr = (u64) page_address(bv->bv_page); + WARN_ON(bv.bv_offset); + msb->blk_count += bv.bv_len >> 12; + aidaw->data_addr = (u64) page_address(bv.bv_page); aidaw++; } } diff --git a/drivers/s390/block/scm_blk_cluster.c b/drivers/s390/block/scm_blk_cluster.c index 27f930c..9aae909 100644 --- a/drivers/s390/block/scm_blk_cluster.c +++ b/drivers/s390/block/scm_blk_cluster.c @@ -122,7 +122,7 @@ static void scm_prepare_cluster_request(struct scm_request *scmrq) struct aidaw *aidaw = scmrq->aidaw; struct msb *msb = &scmrq->aob->msb[0]; struct req_iterator iter; - struct bio_vec *bv; + struct bio_vec bv; int i = 0; u64 addr; @@ -163,7 +163,7 @@ static void scm_prepare_cluster_request(struct scm_request *scmrq) i++; } rq_for_each_segment(bv, req, iter) { - aidaw->data_addr = (u64) page_address(bv->bv_page); + aidaw->data_addr = (u64) page_address(bv.bv_page); aidaw++; i++; } diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c index dd4e73f..3e530f9 100644 --- a/drivers/s390/block/xpram.c +++ b/drivers/s390/block/xpram.c @@ -184,11 +184,11 @@ static unsigned long xpram_highest_page_index(void) static void xpram_make_request(struct request_queue *q, struct bio *bio) { xpram_device_t *xdev = bio->bi_bdev->bd_disk->private_data; - struct bio_vec *bvec; + struct bio_vec bvec; + struct bvec_iter iter; unsigned int index; unsigned long page_addr; unsigned long bytes; - int i; if ((bio->bi_iter.bi_sector & 7) != 0 || (bio->bi_iter.bi_size & 4095) != 0) @@ -200,10 +200,10 @@ static void xpram_make_request(struct request_queue *q, struct bio *bio) if ((bio->bi_iter.bi_sector >> 3) > 0xffffffffU - xdev->offset) goto fail; index = (bio->bi_iter.bi_sector >> 3) + xdev->offset; - bio_for_each_segment(bvec, bio, i) { + bio_for_each_segment(bvec, bio, iter) { page_addr = (unsigned long) - kmap(bvec->bv_page) + bvec->bv_offset; - bytes = bvec->bv_len; + kmap(bvec.bv_page) + bvec.bv_offset; + bytes = bvec.bv_len; if ((page_addr & 4095) != 0 || (bytes & 4095) != 0) /* More paranoia. */ goto fail; |