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authorKent Overstreet <kmo@daterainc.com>2013-08-07 14:24:32 -0700
committerKent Overstreet <kmo@daterainc.com>2013-11-23 22:33:49 -0800
commita4ad39b1d10584dfcfcfb0d510faab2c7f034399 (patch)
treea0747f9978fceb202975f43f15ed4489c6600894 /drivers/md/bcache
parent75d5d8156500cd3833d66806889372e294af514d (diff)
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')
-rw-r--r--drivers/md/bcache/io.c13
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;
}