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| author |   Dan Williams <dan.j.williams@intel.com> | 2015-10-21 13:20:23 -0400 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2015-10-21 14:43:44 -0600 |
| commit | 5a48fc147d7f2718a5c7e73bc8c4067235791fc1 (patch) | |
| tree | 5e13b5f618cd26419dc1cb53fe5f2fc48c4505a7 /block/bio-integrity.c | |
| parent | block: move blk_integrity to request_queue (diff) | |
| download | linux-dev-5a48fc147d7f2718a5c7e73bc8c4067235791fc1.tar.xz linux-dev-5a48fc147d7f2718a5c7e73bc8c4067235791fc1.zip | |
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.petersen@oracle.com>
[martin: fix the CONFIG_BLK_DEV_INTEGRITY=n case]
Tested-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/bio-integrity.c')
| -rw-r--r-- | block/bio-integrity.c | 5 |
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 |