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author | Tejun Heo <tj@kernel.org> | 2015-05-22 17:13:43 -0400 |
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committer | Jens Axboe <axboe@fb.com> | 2015-06-02 08:33:35 -0600 |
commit | 482cf79cdf6669667a914ffd4cbc57a762b55fef (patch) | |
tree | e4aa049aee0c6d643822fe1a56d404c65c25894d /include/linux/backing-dev.h | |
parent | writeback, blkcg: restructure blk_{set|clear}_queue_congested() (diff) | |
download | linux-dev-482cf79cdf6669667a914ffd4cbc57a762b55fef.tar.xz linux-dev-482cf79cdf6669667a914ffd4cbc57a762b55fef.zip |
writeback, blkcg: propagate non-root blkcg congestion state
Now that bdi layer can handle per-blkcg bdi_writeback_congested state,
blk_{set|clear}_congested() can propagate non-root blkcg congestion
state to them.
This can be easily achieved by disabling the root_rl tests in
blk_{set|clear}_congested(). Note that we still need those tests when
!CONFIG_CGROUP_WRITEBACK as otherwise we'll end up flipping root blkcg
wb's congestion state for events happening on other blkcgs.
v2: Updated for bdi_writeback_congested.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jan Kara <jack@suse.cz>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/backing-dev.h')
0 files changed, 0 insertions, 0 deletions