luck/tmp_suning_uos_patched
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block: clean up __bio_add_pc_page a bit

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Share the bi_size update by moving the done label up, and duplicate
the bv_len update in the two callers to get rid of the bvec_merge
label.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2019-04-25 09:04:35 +02:00 committed by Jens Axboe
parent 6601e44efd
commit dcdca753c1
1 changed files with 5 additions and 6 deletions
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11
block/bio.c
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@ -731,9 +731,7 @@ static int __bio_add_pc_page(struct request_queue *q, struct bio *bio,
offset == bvec->bv_offset + bvec->bv_len) {
if (put_same_page)
put_page(page);
bvec_merge:
bvec->bv_len += len;
bio->bi_iter.bi_size += len;
goto done;
}
@ -745,8 +743,10 @@ static int __bio_add_pc_page(struct request_queue *q, struct bio *bio,
return 0;
if (page_is_mergeable(bvec, page, len, offset, false) &&
can_add_page_to_seg(q, bvec, page, len, offset))
goto bvec_merge;
can_add_page_to_seg(q, bvec, page, len, offset)) {
bvec->bv_len += len;
goto done;
}
}
if (bio_full(bio))
@ -760,9 +760,8 @@ static int __bio_add_pc_page(struct request_queue *q, struct bio *bio,
bvec->bv_len = len;
bvec->bv_offset = offset;
bio->bi_vcnt++;
bio->bi_iter.bi_size += len;
done:
bio->bi_iter.bi_size += len;
bio->bi_phys_segments = bio->bi_vcnt;
bio_set_flag(bio, BIO_SEG_VALID);
return len;