@@ -867,9 +867,11 @@ static struct request *attempt_merge(struct request_queue *q,
if (rq_data_dir(req) != rq_data_dir(next))
return NULL;
- /* Don't merge requests with different write hints. */
- if (req->write_hint != next->write_hint)
- return NULL;
+ if (req->bio && next->bio) {
+ /* Don't merge requests with different write hints. */
+ if (req->bio->bi_write_hint != next->bio->bi_write_hint)
+ return NULL;
+ }
if (req->ioprio != next->ioprio)
return NULL;
@@ -1001,9 +1003,11 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio)
if (!bio_crypt_rq_ctx_compatible(rq, bio))
return false;
- /* Don't merge requests with different write hints. */
- if (rq->write_hint != bio->bi_write_hint)
- return false;
+ if (rq->bio) {
+ /* Don't merge requests with different write hints. */
+ if (rq->bio->bi_write_hint != bio->bi_write_hint)
+ return false;
+ }
if (rq->ioprio != bio_prio(bio))
return false;
@@ -2660,7 +2660,6 @@ static void blk_mq_bio_to_request(struct request *rq, struct bio *bio,
rq->cmd_flags |= REQ_FAILFAST_MASK;
rq->__sector = bio->bi_iter.bi_sector;
- rq->write_hint = bio->bi_write_hint;
blk_rq_bio_prep(rq, bio, nr_segs);
if (bio_integrity(bio))
rq->nr_integrity_segments = blk_rq_count_integrity_sg(rq->q,
@@ -3308,7 +3307,6 @@ int blk_rq_prep_clone(struct request *rq, struct request *rq_src,
}
rq->nr_phys_segments = rq_src->nr_phys_segments;
rq->ioprio = rq_src->ioprio;
- rq->write_hint = rq_src->write_hint;
if (rq->bio && blk_crypto_rq_bio_prep(rq, rq->bio, gfp_mask) < 0)
goto free_and_out;
@@ -1190,8 +1190,8 @@ static u8 sd_group_number(struct scsi_cmnd *cmd)
if (!sdkp->rscs)
return 0;
- return min3((u32)rq->write_hint, (u32)sdkp->permanent_stream_count,
- 0x3fu);
+ return min3((u32)rq->bio->bi_write_hint,
+ (u32)sdkp->permanent_stream_count, 0x3fu);
}
static blk_status_t sd_setup_rw32_cmnd(struct scsi_cmnd *cmd, bool write,
@@ -1389,7 +1389,7 @@ static blk_status_t sd_setup_read_write_cmnd(struct scsi_cmnd *cmd)
ret = sd_setup_rw16_cmnd(cmd, write, lba, nr_blocks,
protect | fua, dld);
} else if ((nr_blocks > 0xff) || (lba > 0x1fffff) ||
- sdp->use_10_for_rw || protect || rq->write_hint) {
+ sdp->use_10_for_rw || protect || rq->bio->bi_write_hint) {
ret = sd_setup_rw10_cmnd(cmd, write, lba, nr_blocks,
protect | fua);
} else {
@@ -156,7 +156,6 @@ struct request {
struct blk_crypto_keyslot *crypt_keyslot;
#endif
- enum rw_hint write_hint;
unsigned short ioprio;
enum mq_rq_state state;
The write_hint is only used for read/write requests, which must have a bio attached to them. Just use the bio field instead. Signed-off-by: Christoph Hellwig <hch@lst.de> --- block/blk-merge.c | 16 ++++++++++------ block/blk-mq.c | 2 -- drivers/scsi/sd.c | 6 +++--- include/linux/blk-mq.h | 1 - 4 files changed, 13 insertions(+), 12 deletions(-)