diff options
| author | Wenbo Wang <wenbo.wang@memblaze.com> | 2015-03-20 01:04:54 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-04-19 10:10:12 +0200 |
| commit | f2a756bcb4678e804a5231f6c280dfd30270d663 (patch) | |
| tree | 644f6cd1ff5ed14287541593928814a05b7b90b2 /block | |
| parent | f0170f1971d247f924225f5b896edb55ef8c7c5a (diff) | |
Fix bug in blk_rq_merge_ok
commit 7ee8e4f3983c4ff700958a6099c8fd212ea67b94 upstream.
Use the right array index to reference the last
element of rq->biotail->bi_io_vec[]
Signed-off-by: Wenbo Wang <wenbo.wang@memblaze.com>
Reviewed-by: Chong Yuan <chong.yuan@memblaze.com>
Fixes: 66cb45aa41315 ("block: add support for limiting gaps in SG lists")
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-merge.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c index 89b97b5e0881..2be75ff7f171 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -609,7 +609,7 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio) if (q->queue_flags & (1 << QUEUE_FLAG_SG_GAPS)) { struct bio_vec *bprev; - bprev = &rq->biotail->bi_io_vec[bio->bi_vcnt - 1]; + bprev = &rq->biotail->bi_io_vec[rq->biotail->bi_vcnt - 1]; if (bvec_gap_to_prev(bprev, bio->bi_io_vec[0].bv_offset)) return false; } |