writeback: attribute stats to the matching per-cgroup bdi_writeback

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Until now, all WB_* stats were accounted against the root wb
(bdi_writeback), now that multiple wb (bdi_writeback) support is in
place, let's attributes the stats to the respective per-cgroup wb's.

As no filesystem has FS_CGROUP_WRITEBACK yet, this doesn't lead to
visible behavior differences.

v2: Updated for per-inode wb association.

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>

...

This commit is contained in:

Tejun Heo 2015-05-22 17:13:39 -04:00 • committed by Jens Axboe

parent ce7acfeaf0

commit 9101813437

1 changed files with 15 additions and 9 deletions

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mm/page-writeback.c

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