diff options
| author | Ming Lei <ming.lei@redhat.com> | 2025-05-05 22:17:40 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-05-06 07:43:42 -0600 |
| commit | 56dee46ff47f0ef9944dddd1fd137c94b7c2d9de (patch) | |
| tree | c33f8e6cc6b5ef578feaefa4be6c595d1aacc7b0 /include/linux/blkdev.h | |
| parent | f24d47edd1119b162a986bf1e88f30ec88c28029 (diff) | |
block: move ELEVATOR_FLAG_DISABLE_WBT a request queue flag
ELEVATOR_FLAG_DISABLE_WBT is only used by BFQ to disallow wbt when BFQ is
in use. The flag is set in BFQ's init(), and cleared in BFQ's exit().
Making it as request queue flag, so that we can avoid to deal with elevator
switch race. Also it isn't graceful to checking one scheduler flag in
wbt_enable_default().
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nilay Shroff <nilay@linux.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250505141805.2751237-3-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 5ccb961ee2ae..c36d7a1c2cc0 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -641,6 +641,7 @@ enum { QUEUE_FLAG_RQ_ALLOC_TIME, /* record rq->alloc_time_ns */ QUEUE_FLAG_HCTX_ACTIVE, /* at least one blk-mq hctx is active */ QUEUE_FLAG_SQ_SCHED, /* single queue style io dispatch */ + QUEUE_FLAG_DISABLE_WBT_DEF, /* for sched to disable/enable wbt */ QUEUE_FLAG_MAX }; @@ -676,6 +677,8 @@ void blk_queue_flag_clear(unsigned int flag, struct request_queue *q); #define blk_queue_sq_sched(q) test_bit(QUEUE_FLAG_SQ_SCHED, &(q)->queue_flags) #define blk_queue_skip_tagset_quiesce(q) \ ((q)->limits.features & BLK_FEAT_SKIP_TAGSET_QUIESCE) +#define blk_queue_disable_wbt(q) \ + test_bit(QUEUE_FLAG_DISABLE_WBT_DEF, &(q)->queue_flags) extern void blk_set_pm_only(struct request_queue *q); extern void blk_clear_pm_only(struct request_queue *q); |