diff options
| author | Kent Overstreet <kmo@daterainc.com> | 2013-08-08 01:24:32 +0400 |
|---|---|---|
| committer | Kent Overstreet <kmo@daterainc.com> | 2013-11-24 10:33:49 +0400 |
| commit | a4ad39b1d10584dfcfcfb0d510faab2c7f034399 (patch) | |
| tree | a0747f9978fceb202975f43f15ed4489c6600894 /drivers/md/bcache/io.c | |
| parent | 75d5d8156500cd3833d66806889372e294af514d (diff) | |
| download | linux-a4ad39b1d10584dfcfcfb0d510faab2c7f034399.tar.xz | |
block: Convert bio_iovec() to bvec_iter
For immutable biovecs, we'll be introducing a new bio_iovec() that uses
our new bvec iterator to construct a biovec, taking into account
bvec_iter->bi_bvec_done - this patch updates existing users for the new
usage.
Some of the existing users really do need a pointer into the bvec array
- those uses are all going to be removed, but we'll need the
functionality from immutable to remove them - so for now rename the
existing bio_iovec() -> __bio_iovec(), and it'll be removed in a couple
patches.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: "Ed L. Cashin" <ecashin@coraid.com>
Cc: Alasdair Kergon <agk@redhat.com>
Cc: dm-devel@redhat.com
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Diffstat (limited to 'drivers/md/bcache/io.c')
| -rw-r--r-- | drivers/md/bcache/io.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c index cc4ba2da5fb6..dc44f0689eb7 100644 --- a/drivers/md/bcache/io.c +++ b/drivers/md/bcache/io.c @@ -22,11 +22,12 @@ static void bch_bi_idx_hack_endio(struct bio *bio, int error) static void bch_generic_make_request_hack(struct bio *bio) { if (bio->bi_iter.bi_idx) { + int i; + struct bio_vec *bv; struct bio *clone = bio_alloc(GFP_NOIO, bio_segments(bio)); - memcpy(clone->bi_io_vec, - bio_iovec(bio), - bio_segments(bio) * sizeof(struct bio_vec)); + bio_for_each_segment(bv, bio, i) + clone->bi_io_vec[clone->bi_vcnt++] = *bv; clone->bi_iter.bi_sector = bio->bi_iter.bi_sector; clone->bi_bdev = bio->bi_bdev; @@ -97,7 +98,7 @@ struct bio *bch_bio_split(struct bio *bio, int sectors, if (!ret) return NULL; - memcpy(ret->bi_io_vec, bio_iovec(bio), + memcpy(ret->bi_io_vec, __bio_iovec(bio), sizeof(struct bio_vec) * vcnt); break; @@ -106,7 +107,7 @@ struct bio *bch_bio_split(struct bio *bio, int sectors, if (!ret) return NULL; - memcpy(ret->bi_io_vec, bio_iovec(bio), + memcpy(ret->bi_io_vec, __bio_iovec(bio), sizeof(struct bio_vec) * vcnt); ret->bi_io_vec[vcnt - 1].bv_len = nbytes; @@ -182,7 +183,7 @@ static unsigned bch_bio_max_sectors(struct bio *bio) ret = min(ret, queue_max_sectors(q)); WARN_ON(!ret); - ret = max_t(int, ret, bio_iovec(bio)->bv_len >> 9); + ret = max_t(int, ret, bio_iovec(bio).bv_len >> 9); return ret; } |