diff options
author | Kent Overstreet <kmo@daterainc.com> | 2013-09-17 19:51:31 -0700 |
---|---|---|
committer | Jens Axboe <axboe@kernel.dk> | 2013-10-31 08:04:49 -0600 |
commit | 5d1f127c3e0c57d64ce75ee04a0db2b40a3e21df (patch) | |
tree | 42b8e6e8262f67d4168a51016e787261b28ee5ba /drivers/staging | |
parent | 3d14ea51119f4afad8d0ac4d206923bca744684d (diff) |
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>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/staging')
-rw-r--r-- | drivers/staging/lustre/lustre/llite/lloop.c | 14 | ||||
-rw-r--r-- | drivers/staging/zram/zram_drv.c | 19 |
2 files changed, 17 insertions, 16 deletions
diff --git a/drivers/staging/lustre/lustre/llite/lloop.c b/drivers/staging/lustre/lustre/llite/lloop.c index 5b8c8c22f781..3488bb6c44a7 100644 --- a/drivers/staging/lustre/lustre/llite/lloop.c +++ b/drivers/staging/lustre/lustre/llite/lloop.c @@ -194,10 +194,10 @@ static int do_bio_lustrebacked(struct lloop_device *lo, struct bio *head) struct cl_object *obj = ll_i2info(inode)->lli_clob; pgoff_t offset; int ret; - int i; int rw; obd_count page_count = 0; - struct bio_vec *bvec; + struct bio_vec bvec; + struct bvec_iter iter; struct bio *bio; ssize_t bytes; @@ -221,14 +221,14 @@ static int do_bio_lustrebacked(struct lloop_device *lo, struct bio *head) LASSERT(rw == bio->bi_rw); offset = (pgoff_t)(bio->bi_iter.bi_sector << 9) + lo->lo_offset; - bio_for_each_segment(bvec, bio, i) { - BUG_ON(bvec->bv_offset != 0); - BUG_ON(bvec->bv_len != PAGE_CACHE_SIZE); + bio_for_each_segment(bvec, bio, iter) { + BUG_ON(bvec.bv_offset != 0); + BUG_ON(bvec.bv_len != PAGE_CACHE_SIZE); - pages[page_count] = bvec->bv_page; + pages[page_count] = bvec.bv_page; offsets[page_count] = offset; page_count++; - offset += bvec->bv_len; + offset += bvec.bv_len; } LASSERT(page_count <= LLOOP_MAX_SEGMENTS); } diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c index 7b4255b32bf2..231123868908 100644 --- a/drivers/staging/zram/zram_drv.c +++ b/drivers/staging/zram/zram_drv.c @@ -670,9 +670,10 @@ static ssize_t reset_store(struct device *dev, static void __zram_make_request(struct zram *zram, struct bio *bio, int rw) { - int i, offset; + int offset; u32 index; - struct bio_vec *bvec; + struct bio_vec bvec; + struct bvec_iter iter; switch (rw) { case READ: @@ -687,33 +688,33 @@ static void __zram_make_request(struct zram *zram, struct bio *bio, int rw) offset = (bio->bi_iter.bi_sector & (SECTORS_PER_PAGE - 1)) << SECTOR_SHIFT; - bio_for_each_segment(bvec, bio, i) { + bio_for_each_segment(bvec, bio, iter) { int max_transfer_size = PAGE_SIZE - offset; - if (bvec->bv_len > max_transfer_size) { + if (bvec.bv_len > max_transfer_size) { /* * zram_bvec_rw() can only make operation on a single * zram page. Split the bio vector. */ struct bio_vec bv; - bv.bv_page = bvec->bv_page; + bv.bv_page = bvec.bv_page; bv.bv_len = max_transfer_size; - bv.bv_offset = bvec->bv_offset; + bv.bv_offset = bvec.bv_offset; if (zram_bvec_rw(zram, &bv, index, offset, bio, rw) < 0) goto out; - bv.bv_len = bvec->bv_len - max_transfer_size; + bv.bv_len = bvec.bv_len - max_transfer_size; bv.bv_offset += max_transfer_size; if (zram_bvec_rw(zram, &bv, index+1, 0, bio, rw) < 0) goto out; } else - if (zram_bvec_rw(zram, bvec, index, offset, bio, rw) + if (zram_bvec_rw(zram, &bvec, index, offset, bio, rw) < 0) goto out; - update_position(&index, &offset, bvec); + update_position(&index, &offset, &bvec); } set_bit(BIO_UPTODATE, &bio->bi_flags); |