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| author | Tejun Heo <tj@kernel.org> | 2015-05-22 17:13:49 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-06-02 08:33:36 -0600 |
| commit | 693108a8a6672cec88265d83f7187dc83ba1d6a3 (patch) | |
| tree | a2acaa3711528e7e546289dfcd3431ca8ac6fb55 /lib/random32.c | |
| parent | e79729123f6392b36450113c6c52074b7d389c85 (diff) | |
| download | op-kernel-dev-693108a8a6672cec88265d83f7187dc83ba1d6a3.zip op-kernel-dev-693108a8a6672cec88265d83f7187dc83ba1d6a3.tar.gz | |
writeback: make bdi->min/max_ratio handling cgroup writeback aware
bdi->min/max_ratio are user-configurable per-bdi knobs which regulate
dirty limit of each bdi. For cgroup writeback, they need to be
further distributed across wb's (bdi_writeback's) belonging to the
configured bdi.
This patch introduces wb_min_max_ratio() which distributes
bdi->min/max_ratio according to a wb's proportion in the total active
bandwidth of its bdi.
v2: Update wb_min_max_ratio() to fix a bug where both min and max were
assigned the min value and avoid calculations when possible.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'lib/random32.c')
0 files changed, 0 insertions, 0 deletions
