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charset="utf-8" X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220929121650epcas5p424925af86ec6941bb53e5c102fd0ffc8 References: <20220929120632.64749-1-anuj20.g@samsung.com> Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org From: Kanchan Joshi Move bio allocation logic from bio_map_user_iov to a new helper blk_rq_map_bio_alloc. It is named so because functionality is opposite of what is done inside blk_mq_map_bio_put. This is a prep patch. Signed-off-by: Kanchan Joshi --- block/blk-map.c | 33 ++++++++++++++++++++++----------- 1 file changed, 22 insertions(+), 11 deletions(-) diff --git a/block/blk-map.c b/block/blk-map.c index d913ef92a9fe..9e37a03b8a21 100644 --- a/block/blk-map.c +++ b/block/blk-map.c @@ -241,17 +241,10 @@ static void blk_mq_map_bio_put(struct bio *bio) } } -static int bio_map_user_iov(struct request *rq, struct iov_iter *iter, - gfp_t gfp_mask) +static struct bio *blk_rq_map_bio_alloc(struct request *rq, + unsigned int nr_vecs, gfp_t gfp_mask) { - unsigned int max_sectors = queue_max_hw_sectors(rq->q); - unsigned int nr_vecs = iov_iter_npages(iter, BIO_MAX_VECS); struct bio *bio; - int ret; - int j; - - if (!iov_iter_count(iter)) - return -EINVAL; if (rq->cmd_flags & REQ_POLLED) { blk_opf_t opf = rq->cmd_flags | REQ_ALLOC_CACHE; @@ -259,13 +252,31 @@ static int bio_map_user_iov(struct request *rq, struct iov_iter *iter, bio = bio_alloc_bioset(NULL, nr_vecs, opf, gfp_mask, &fs_bio_set); if (!bio) - return -ENOMEM; + return NULL; } else { bio = bio_kmalloc(nr_vecs, gfp_mask); if (!bio) - return -ENOMEM; + return NULL; bio_init(bio, NULL, bio->bi_inline_vecs, nr_vecs, req_op(rq)); } + return bio; +} + +static int bio_map_user_iov(struct request *rq, struct iov_iter *iter, + gfp_t gfp_mask) +{ + unsigned int max_sectors = queue_max_hw_sectors(rq->q); + unsigned int nr_vecs = iov_iter_npages(iter, BIO_MAX_VECS); + struct bio *bio; + int ret; + int j; + + if (!iov_iter_count(iter)) + return -EINVAL; + + bio = blk_rq_map_bio_alloc(rq, nr_vecs, gfp_mask); + if (bio == NULL) + return -ENOMEM; while (iov_iter_count(iter)) { struct page **pages, *stack_pages[UIO_FASTIOV]; -- 2.25.1