diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/blk-mq.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 18a2388ba581..4349aefdbc87 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -1104,6 +1104,7 @@ struct req_iterator { /* * blk_rq_pos() : the current sector * blk_rq_bytes() : bytes left in the entire request + * blk_rq_has_data() : whether the request carries data * blk_rq_cur_bytes() : bytes left in the current segment * blk_rq_sectors() : sectors left in the entire request * blk_rq_cur_sectors() : sectors left in the current segment @@ -1119,6 +1120,14 @@ static inline unsigned int blk_rq_bytes(const struct request *rq) return rq->__data_len; } +static inline bool blk_rq_has_data(const struct request *rq) +{ + return blk_rq_bytes(rq) && + req_op(rq) != REQ_OP_DISCARD && + req_op(rq) != REQ_OP_SECURE_ERASE && + req_op(rq) != REQ_OP_WRITE_ZEROES; +} + static inline int blk_rq_cur_bytes(const struct request *rq) { if (!rq->bio) |