| commit | c374f127e4ff17a318b9ae95a5bf65f370c2d0b1 | [log] [tgz] |
|---|---|---|
| author | Tejun Heo <htejun@gmail.com> | Thu Jun 16 12:57:31 2005 +0200 |
| committer | Jens Axboe <axboe@suse.de> | Thu Jun 16 12:57:31 2005 +0200 |
| tree | d1e42b31f9a66582096e9548fc90cc069d6f39e2 | |
| parent | 9c56187d3c345cc0e7a2f162b8c32543175d7bf7 [diff] |
This patch fixes q->unplug_thresh condition check in __elv_add_request(). rq.count[READ] + rq.count[WRITE] can increase more than one if another thread has allocated a request after the current request is allocated or in_flight could have changed resulting in larger-than-one change of nrq, thus breaking the threshold mechanism. Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Tejun Heo <htejun@gmail.com>