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| author | Shaohua Li <shli@fb.com> | 2017-03-24 10:34:43 -0700 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2017-03-25 09:18:37 -0700 |
| commit | f45958756fef552436e4a63029a168495920026e (patch) | |
| tree | 4aaca40576c143f934df56c179296842860aaf8c /block/bio.c | |
| parent | 2d06e3b7145bb08705615e6e7400024d8e36a5c0 (diff) | |
| download | linux-f45958756fef552436e4a63029a168495920026e.tar.gz | |
block: remove bio_clone_bioset_partial()
commit c18a1e0(block: introduce bio_clone_bioset_partial()) introduced bio_clone_bioset_partial() for raid1 write behind IO. Now the write behind is rewritten by Ming. We don't need the API any more, so revert the commit. Cc: Christoph Hellwig <hch@lst.de> Reviewed-by: Jens Axboe <axboe@fb.com> Reviewed-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'block/bio.c')
| -rw-r--r-- | block/bio.c | 61 |
1 files changed, 13 insertions, 48 deletions
diff --git a/block/bio.c b/block/bio.c index 1ccff0dace89..036435995c55 100644 --- a/block/bio.c +++ b/block/bio.c @@ -631,20 +631,21 @@ struct bio *bio_clone_fast(struct bio *bio, gfp_t gfp_mask, struct bio_set *bs) } EXPORT_SYMBOL(bio_clone_fast); -static struct bio *__bio_clone_bioset(struct bio *bio_src, gfp_t gfp_mask, - struct bio_set *bs, int offset, - int size) +/** + * bio_clone_bioset - clone a bio + * @bio_src: bio to clone + * @gfp_mask: allocation priority + * @bs: bio_set to allocate from + * + * Clone bio. Caller will own the returned bio, but not the actual data it + * points to. Reference count of returned bio will be one. + */ +struct bio *bio_clone_bioset(struct bio *bio_src, gfp_t gfp_mask, + struct bio_set *bs) { struct bvec_iter iter; struct bio_vec bv; struct bio *bio; - struct bvec_iter iter_src = bio_src->bi_iter; - - /* for supporting partial clone */ - if (offset || size != bio_src->bi_iter.bi_size) { - bio_advance_iter(bio_src, &iter_src, offset); - iter_src.bi_size = size; - } /* * Pre immutable biovecs, __bio_clone() used to just do a memcpy from @@ -668,8 +669,7 @@ static struct bio *__bio_clone_bioset(struct bio *bio_src, gfp_t gfp_mask, * __bio_clone_fast() anyways. */ - bio = bio_alloc_bioset(gfp_mask, __bio_segments(bio_src, - &iter_src), bs); + bio = bio_alloc_bioset(gfp_mask, bio_segments(bio_src), bs); if (!bio) return NULL; bio->bi_bdev = bio_src->bi_bdev; @@ -686,7 +686,7 @@ static struct bio *__bio_clone_bioset(struct bio *bio_src, gfp_t gfp_mask, bio->bi_io_vec[bio->bi_vcnt++] = bio_src->bi_io_vec[0]; break; default: - __bio_for_each_segment(bv, bio_src, iter, iter_src) + bio_for_each_segment(bv, bio_src, iter) bio->bi_io_vec[bio->bi_vcnt++] = bv; break; } @@ -705,44 +705,9 @@ static struct bio *__bio_clone_bioset(struct bio *bio_src, gfp_t gfp_mask, return bio; } - -/** - * bio_clone_bioset - clone a bio - * @bio_src: bio to clone - * @gfp_mask: allocation priority - * @bs: bio_set to allocate from - * - * Clone bio. Caller will own the returned bio, but not the actual data it - * points to. Reference count of returned bio will be one. - */ -struct bio *bio_clone_bioset(struct bio *bio_src, gfp_t gfp_mask, - struct bio_set *bs) -{ - return __bio_clone_bioset(bio_src, gfp_mask, bs, 0, - bio_src->bi_iter.bi_size); -} EXPORT_SYMBOL(bio_clone_bioset); /** - * bio_clone_bioset_partial - clone a partial bio - * @bio_src: bio to clone - * @gfp_mask: allocation priority - * @bs: bio_set to allocate from - * @offset: cloned starting from the offset - * @size: size for the cloned bio - * - * Clone bio. Caller will own the returned bio, but not the actual data it - * points to. Reference count of returned bio will be one. - */ -struct bio *bio_clone_bioset_partial(struct bio *bio_src, gfp_t gfp_mask, - struct bio_set *bs, int offset, - int size) -{ - return __bio_clone_bioset(bio_src, gfp_mask, bs, offset, size); -} -EXPORT_SYMBOL(bio_clone_bioset_partial); - -/** * bio_add_pc_page - attempt to add page to bio * @q: the target queue * @bio: destination bio |