path: root/block/blk-mq-tag.h
diff options
authorJens Axboe <>2014-12-22 14:04:42 -0700
committerJens Axboe <>2014-12-31 09:39:16 -0700
commitaed3ea94bdd2ac0a21ed0103d34097e202ee77f6 (patch)
treee432ae8b2224a4172e4c91350b0135b14c587442 /block/blk-mq-tag.h
parent2b25d981790b830f0e045881386866b970bf9066 (diff)
block: wake up waiters when a queue is marked dying
If it's dying, we can't expect new request to complete and come in an wake up other tasks waiting for requests. So after we have marked it as dying, wake up everybody currently waiting for a request. Once they wake, they will retry their allocation and fail appropriately due to the state of the queue. Tested-by: Keith Busch <> Signed-off-by: Jens Axboe <>
Diffstat (limited to 'block/blk-mq-tag.h')
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-mq-tag.h b/block/blk-mq-tag.h
index 6206ed17ef76..a6fa0fc9d41a 100644
--- a/block/blk-mq-tag.h
+++ b/block/blk-mq-tag.h
@@ -54,6 +54,7 @@ extern bool blk_mq_has_free_tags(struct blk_mq_tags *tags);
extern ssize_t blk_mq_tag_sysfs_show(struct blk_mq_tags *tags, char *page);
extern void blk_mq_tag_init_last_tag(struct blk_mq_tags *tags, unsigned int *last_tag);
extern int blk_mq_tag_update_depth(struct blk_mq_tags *tags, unsigned int depth);
+extern void blk_mq_tag_wakeup_all(struct blk_mq_tags *tags, bool);
enum {