diff options
| author | Caleb Sander Mateos <csander@purestorage.com> | 2026-05-13 15:18:45 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-05-22 08:05:33 -0600 |
| commit | 999722b34441b4ab65b7ca7fb16dd4b62fc3c354 (patch) | |
| tree | 72c5a605d457fb676e6a8441d777a756fcf59f7d /include/linux | |
| parent | be34ec59ef061a1cc435a3e066ad71ca675c7fcd (diff) | |
blk-mq: introduce blk_rq_has_data()
Add blk_rq_has_data(), an analogue of bio_has_data() for struct request.
This skips one dereference relative to bio_has_data(rq->bio).
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20260513211846.1956810-2-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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) |