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| author | Tejun Heo <tj@kernel.org> | 2013-05-14 13:52:37 -0700 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-05-14 13:52:37 -0700 |
| commit | 2a12f0dcdad1ba7c0e53bbff8e5f6d0ee7a29882 (patch) | |
| tree | fd0cee6d116653a4619c941d3dc1a759edd45064 /block/blk-core.c | |
| parent | 6e1a5704cbbd244a8db2d7d59215cf9a4c9a0d31 (diff) | |
| download | op-kernel-dev-2a12f0dcdad1ba7c0e53bbff8e5f6d0ee7a29882.zip op-kernel-dev-2a12f0dcdad1ba7c0e53bbff8e5f6d0ee7a29882.tar.gz | |
blk-throttle: make blk_throtl_drain() ready for hierarchy
The current blk_throtl_drain() assumes that all active throtl_grps are
queued on throtl_data->service_queue, which won't be true once
hierarchy support is implemented.
This patch makes blk_throtl_drain() perform post-order walk of the
blkg hierarchy draining each associated throtl_grp, which guarantees
that all bios will eventually be pushed to the top-level service_queue
in throtl_data.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Diffstat (limited to 'block/blk-core.c')
0 files changed, 0 insertions, 0 deletions
