blk-mq: fix race in IO start accounting

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Commit c6d600c6 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>

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This commit is contained in:

Jens Axboe 2014-05-09 14:54:08 -06:00

parent 4bb659b156

commit cf4b50afc2

1 changed files with 2 additions and 4 deletions

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block/blk-mq.c

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