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| author | Tejun Heo <tj@kernel.org> | 2015-09-29 12:47:53 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-10-12 10:31:13 -0600 |
| commit | d60d1bddd5b642711a237511845853755b25bf1f (patch) | |
| tree | e5790b6d703d30fcd8c92f5760fdcc0e165fc912 /mm/memcontrol.c | |
| parent | b817525a4a80c04e4ca44192d97a1ffa9f2be572 (diff) | |
| download | blackbird-obmc-linux-d60d1bddd5b642711a237511845853755b25bf1f.tar.gz blackbird-obmc-linux-d60d1bddd5b642711a237511845853755b25bf1f.zip | |
writeback: memcg dirty_throttle_control should be initialized with wb->memcg_completions
MDTC_INIT() is used to initialize dirty_throttle_control for memcg
domains. It used DTC_INIT_COMMON() to initialized mdtc->wb and
->wb_completions which is incorrect as DTC_INIT_COMMON() sets the
latter to wb->completions instead of wb->memcg_completions. This can
lead to wildly incorrect results when calculating the proportion of
dirty memory the memcg domain should get.
Remove DTC_INIT_COMMON() and update MDTC_INIT() to initialize
mdtc->wb_completions to wb->memcg_completions.
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: c2aa723a6093 ("writeback: implement memcg writeback domain based throttling")
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'mm/memcontrol.c')
0 files changed, 0 insertions, 0 deletions
