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authorChristoph Hellwig <hch@lst.de>2019-05-21 07:01:42 (GMT)
committerJens Axboe <axboe@kernel.dk>2019-05-23 16:25:26 (GMT)
commit200a9aff7b02feea30b01141b0df9bc19457a232 (patch)
tree57a00310c58349e660c47462dc073e4fca29c771 /block
parent09324d32d2a0843e66652a087da6f77924358e62 (diff)
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block: remove the segment size check in bio_will_gap
We fundamentally do not have a maximum segement size for devices with a virt boundary. So don't bother checking it, especially given that the existing checks didn't properly work to start with as we never fully update the front/back segment size and miss the bi_seg_front_size that wuld have been required for some cases. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
-rw-r--r--block/blk-merge.c19
1 files changed, 1 insertions, 18 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 80a5a0f..eee2c02 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -12,23 +12,6 @@
#include "blk.h"
-/*
- * Check if the two bvecs from two bios can be merged to one segment. If yes,
- * no need to check gap between the two bios since the 1st bio and the 1st bvec
- * in the 2nd bio can be handled in one segment.
- */
-static inline bool bios_segs_mergeable(struct request_queue *q,
- struct bio *prev, struct bio_vec *prev_last_bv,
- struct bio_vec *next_first_bv)
-{
- if (!biovec_phys_mergeable(q, prev_last_bv, next_first_bv))
- return false;
- if (prev->bi_seg_back_size + next_first_bv->bv_len >
- queue_max_segment_size(q))
- return false;
- return true;
-}
-
static inline bool bio_will_gap(struct request_queue *q,
struct request *prev_rq, struct bio *prev, struct bio *next)
{
@@ -60,7 +43,7 @@ static inline bool bio_will_gap(struct request_queue *q,
*/
bio_get_last_bvec(prev, &pb);
bio_get_first_bvec(next, &nb);
- if (bios_segs_mergeable(q, prev, &pb, &nb))
+ if (biovec_phys_mergeable(q, &pb, &nb))
return false;
return __bvec_gap_to_prev(q, &pb, nb.bv_offset);
}