mm: enable __wb_calc_thresh to calculate dirty background threshold

Patch series "Fix and cleanups to page-writeback", v2.

This series contains some random cleanups and a fix to correct calculation
of wb's bg_thresh in cgroup domain.  More details can be found respective
patches.


This patch (of 4):

Originally, __wb_calc_thresh always calculate wb's share of dirty
throttling threshold.  By getting thresh of wb_domain from caller,
__wb_calc_thresh could be used for both dirty throttling and dirty
background threshold.

This is a preparation to correct threshold calculation of wb in cgroup.

Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kemeng Shi <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Cc: Howard Cochran <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: Miklos Szeredi <[email protected]>
Cc: Tejun Heo <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions