diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/blk-mq.h | 18 | ||||
| -rw-r--r-- | include/linux/blk_types.h | 5 |
2 files changed, 19 insertions, 4 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index eb7254b3dddd..cae9e857aea4 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -1213,6 +1213,24 @@ static inline unsigned short blk_rq_nr_discard_segments(struct request *rq) return max_t(unsigned short, rq->nr_phys_segments, 1); } +/** + * blk_rq_nr_bvec - return number of bvecs in a request + * @rq: request to calculate bvecs for + * + * Returns the number of bvecs. + */ +static inline unsigned int blk_rq_nr_bvec(struct request *rq) +{ + struct req_iterator rq_iter; + struct bio_vec bv; + unsigned int nr_bvec = 0; + + rq_for_each_bvec(bv, rq, rq_iter) + nr_bvec++; + + return nr_bvec; +} + int __blk_rq_map_sg(struct request *rq, struct scatterlist *sglist, struct scatterlist **last_sg); static inline int blk_rq_map_sg(struct request *rq, struct scatterlist *sglist) diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index cbbcb9051ec3..5dc061d318a4 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -479,10 +479,7 @@ static inline bool op_is_discard(blk_opf_t op) } /* - * Check if a bio or request operation is a zone management operation, with - * the exception of REQ_OP_ZONE_RESET_ALL which is treated as a special case - * due to its different handling in the block layer and device response in - * case of command failure. + * Check if a bio or request operation is a zone management operation. */ static inline bool op_is_zone_mgmt(enum req_op op) { |