path: root/block/bio-integrity.c
diff options
authorDan Williams <>2015-10-21 13:20:23 -0400
committerJens Axboe <>2015-10-21 14:43:44 -0600
commit5a48fc147d7f2718a5c7e73bc8c4067235791fc1 (patch)
tree5e13b5f618cd26419dc1cb53fe5f2fc48c4505a7 /block/bio-integrity.c
parentac6fc48c9fb7d3220ec4e0be0c29bb314ea75f9f (diff)
block: blk_flush_integrity() for bio-based drivers
Since they lack requests to pin the request_queue active, synchronous bio-based drivers may have in-flight integrity work from bio_integrity_endio() that is not flushed by blk_freeze_queue(). Flush that work to prevent races to free the queue and the final usage of the blk_integrity profile. This is temporary unless/until bio-based drivers start to generically take a q_usage_counter reference while a bio is in-flight. Cc: Martin K. Petersen <> [martin: fix the CONFIG_BLK_DEV_INTEGRITY=n case] Tested-by: Ross Zwisler <> Signed-off-by: Dan Williams <> Signed-off-by: Jens Axboe <>
Diffstat (limited to 'block/bio-integrity.c')
1 files changed, 5 insertions, 0 deletions
diff --git a/block/bio-integrity.c b/block/bio-integrity.c
index 6a90eca9cea1..f6325d573c10 100644
--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c
@@ -32,6 +32,11 @@
static struct kmem_cache *bip_slab;
static struct workqueue_struct *kintegrityd_wq;
+void blk_flush_integrity(void)
+ flush_workqueue(kintegrityd_wq);
* bio_integrity_alloc - Allocate integrity payload and attach it to bio
* @bio: bio to attach integrity metadata to