| commit | 63d34056ad814679badc9182292c172af242d565 | |
| author | Jeff Moyer <jmoyer@redhat.com> | |
| Thu, 29 Sep 2011 09:57:45 +0000 (29 15:27 +0530) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 7 Nov 2011 20:32:39 +0000 (7 12:32 -0800) | ||
| tree | 8cfb0b4770a52864e5f40aac3008d69c22c0f1db | treesnapshot (tar.gz zip) |
| parent | 6bfa77d42c6f0772bf46389e749bb0ff69e00448 | commitdiff |
cfq: break apart merged cfqqs if they stop cooperating
commit e6c5bc737ab71e4af6025ef7d150f5a26ae5f146 upstream.
cfq_queues are merged if they are issuing requests within the mean seek
distance of one another. This patch detects when the coopearting stops and
breaks the queues back up.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit e6c5bc737ab71e4af6025ef7d150f5a26ae5f146 upstream.
cfq_queues are merged if they are issuing requests within the mean seek
distance of one another. This patch detects when the coopearting stops and
breaks the queues back up.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| block/cfq-iosched.c | diffblobblamehistory |