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authorTejun Heo <tj@kernel.org>2012-03-05 13:14:59 -0800
committerJens Axboe <axboe@kernel.dk>2012-03-06 21:27:22 +0100
commit6ecf23afab13c39d3bb0e2d826d0984b0dd53733 (patch)
tree48436e2eb507d623ff2c2332aa34e9b7380f33e1 /block/elevator.c
parentd732580b4eb31553c63744a47d590f770cafb8f0 (diff)
block: extend queue bypassing to cover blkcg policies
Extend queue bypassing such that dying queue is always bypassing and blk-throttle is drained on bypass. With blkcg policies updated to test blk_queue_bypass() instead of blk_queue_dead(), this ensures that no bio or request is held by or going through blkcg policies on a bypassing queue. This will be used to implement blkg cleanup on elevator switches and policy changes. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/elevator.c')
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