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* blkio: Some debugging aids for CFQVivek Goyal2009-12-031-0/+4
| | | | | | | o Some debugging aids for CFQ. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* blkio: Take care of cgroup deletion and cfq group reference countingVivek Goyal2009-12-031-2/+64
| | | | | | | | | | o One can choose to change elevator or delete a cgroup. Implement group reference counting so that both elevator exit and cgroup deletion can take place gracefully. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Nauman Rafique <nauman@google.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* blkio: Introduce blkio controller cgroup interfaceVivek Goyal2009-12-031-0/+177
o This is basic implementation of blkio controller cgroup interface. This is the common interface visible to user space and should be used by different IO control policies as we implement those. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>