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(parent: 2c34d8b) | patch
blk-mq: fix race in IO start accounting
authorJens Axboe <axboe@fb.com>
Fri, 9 May 2014 20:54:08 +0000 (14:54 -0600)
committerJens Axboe <axboe@fb.com>
Fri, 9 May 2014 20:54:08 +0000 (14:54 -0600)
commitc29d51599d006225f1c8140383d583f780101a0f
tree021ac302ac256c4fd3a03b740a0c823e69644b89tree | snapshot
parent2c34d8b4324ef3a2aa353f75be278bd7ef48811dcommit | diff
blk-mq: fix race in IO start accounting

Commit 593ffe46 opened up a small race where we could attempt to
account IO completion on a request, racing with IO start accounting.
Fix this up by ensuring that we've accounted for IO start before
inserting the request.

Signed-off-by: Jens Axboe <axboe@fb.com>
block/blk-mq.c diff | blob | history
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