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| author | Christoph Hellwig <hch@lst.de> | 2019-06-06 12:29:02 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-06-20 10:29:22 -0600 |
| commit | e9cd19c0c198aa1c893e142b015fde6da862ed52 (patch) | |
| tree | 323cfe08f79300ebe2fa72105e4c7f4d6d1c17d5 /block/blk-merge.c | |
| parent | 14ccb66b3f585b2bc21e7256c96090abed5a512c (diff) | |
| download | linux-e9cd19c0c198aa1c893e142b015fde6da862ed52.tar.gz linux-e9cd19c0c198aa1c893e142b015fde6da862ed52.tar.bz2 linux-e9cd19c0c198aa1c893e142b015fde6da862ed52.zip | |
block: simplify blk_recalc_rq_segments
Return the segement and let the callers assign them, which makes the code
a littler more obvious. Also pass the request instead of q plus bio
chain, allowing for the use of rq_for_each_bvec.
Reviewed-by: Hannes Reinecke <hare@suse.com>
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.c | 21 |
1 files changed, 6 insertions, 15 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c index 72b4fd89a22d..2ea21ffd5f72 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -310,17 +310,16 @@ void blk_queue_split(struct request_queue *q, struct bio **bio) } EXPORT_SYMBOL(blk_queue_split); -static unsigned int __blk_recalc_rq_segments(struct request_queue *q, - struct bio *bio) +unsigned int blk_recalc_rq_segments(struct request *rq) { unsigned int nr_phys_segs = 0; - struct bvec_iter iter; + struct req_iterator iter; struct bio_vec bv; - if (!bio) + if (!rq->bio) return 0; - switch (bio_op(bio)) { + switch (bio_op(rq->bio)) { case REQ_OP_DISCARD: case REQ_OP_SECURE_ERASE: case REQ_OP_WRITE_ZEROES: @@ -329,19 +328,11 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q, return 1; } - for_each_bio(bio) { - bio_for_each_bvec(bv, bio, iter) - bvec_split_segs(q, &bv, &nr_phys_segs, NULL, UINT_MAX); - } - + rq_for_each_bvec(bv, rq, iter) + bvec_split_segs(rq->q, &bv, &nr_phys_segs, NULL, UINT_MAX); return nr_phys_segs; } -void blk_recalc_rq_segments(struct request *rq) -{ - rq->nr_phys_segments = __blk_recalc_rq_segments(rq->q, rq->bio); -} - static inline struct scatterlist *blk_next_sg(struct scatterlist **sg, struct scatterlist *sglist) { |