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| author | Christoph Hellwig <hch@lst.de> | 2019-05-21 09:01:42 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-05-23 10:25:26 -0600 |
| commit | 200a9aff7b02feea30b01141b0df9bc19457a232 (patch) | |
| tree | 57a00310c58349e660c47462dc073e4fca29c771 /block | |
| parent | 09324d32d2a0843e66652a087da6f77924358e62 (diff) | |
| download | linux-200a9aff7b02feea30b01141b0df9bc19457a232.tar.gz linux-200a9aff7b02feea30b01141b0df9bc19457a232.tar.bz2 linux-200a9aff7b02feea30b01141b0df9bc19457a232.zip | |
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.c | 19 |
1 files changed, 1 insertions, 18 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c index 80a5a0facb87..eee2c02c50ce 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); } |