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authorChristoph Hellwig <hch@lst.de>2018-09-24 09:43:52 +0200
committerJens Axboe <axboe@kernel.dk>2018-09-24 12:33:57 -0600
commit3dccdae54fe836a22cee9dc6df9fd1708ae075ce (patch)
tree95d8808538de6f977086e2603d75694d7c1848bc /block/blk-merge.c
parent0e253391a970300fe4ae69d0c1d1ab494eb07508 (diff)
downloadlinux-stericsson-3dccdae54fe836a22cee9dc6df9fd1708ae075ce.tar.gz
block: merge BIOVEC_SEG_BOUNDARY into biovec_phys_mergeable
These two checks should always be performed together, so merge them into a single helper. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-merge.c')
-rw-r--r--block/blk-merge.c29
1 files changed, 5 insertions, 24 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 5e63e8259f92..42a46744c11b 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -21,9 +21,7 @@ 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(prev_last_bv, next_first_bv))
- return false;
- if (!BIOVEC_SEG_BOUNDARY(q, prev_last_bv, 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))
@@ -199,9 +197,7 @@ static struct bio *blk_bio_segment_split(struct request_queue *q,
if (bvprvp && blk_queue_cluster(q)) {
if (seg_size + bv.bv_len > queue_max_segment_size(q))
goto new_segment;
- if (!biovec_phys_mergeable(bvprvp, &bv))
- goto new_segment;
- if (!BIOVEC_SEG_BOUNDARY(q, bvprvp, &bv))
+ if (!biovec_phys_mergeable(q, bvprvp, &bv))
goto new_segment;
seg_size += bv.bv_len;
@@ -332,9 +328,7 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q,
if (seg_size + bv.bv_len
> queue_max_segment_size(q))
goto new_segment;
- if (!biovec_phys_mergeable(&bvprv, &bv))
- goto new_segment;
- if (!BIOVEC_SEG_BOUNDARY(q, &bvprv, &bv))
+ if (!biovec_phys_mergeable(q, &bvprv, &bv))
goto new_segment;
seg_size += bv.bv_len;
@@ -414,17 +408,7 @@ static int blk_phys_contig_segment(struct request_queue *q, struct bio *bio,
bio_get_last_bvec(bio, &end_bv);
bio_get_first_bvec(nxt, &nxt_bv);
- if (!biovec_phys_mergeable(&end_bv, &nxt_bv))
- return 0;
-
- /*
- * bio and nxt are contiguous in memory; check if the queue allows
- * these two to be merged into one
- */
- if (BIOVEC_SEG_BOUNDARY(q, &end_bv, &nxt_bv))
- return 1;
-
- return 0;
+ return biovec_phys_mergeable(q, &end_bv, &nxt_bv);
}
static inline void
@@ -438,10 +422,7 @@ __blk_segment_map_sg(struct request_queue *q, struct bio_vec *bvec,
if (*sg && *cluster) {
if ((*sg)->length + nbytes > queue_max_segment_size(q))
goto new_segment;
-
- if (!biovec_phys_mergeable(bvprv, bvec))
- goto new_segment;
- if (!BIOVEC_SEG_BOUNDARY(q, bvprv, bvec))
+ if (!biovec_phys_mergeable(q, bvprv, bvec))
goto new_segment;
(*sg)->length += nbytes;