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Subject[PATCH 0/9] write bandwidth estimation and writeback fixes v2

These patches are mainly seperated out from the original IO-less writeback
patchset. They are general useful as standalone improvements.

The v1 patches were posted in two threads:

In addition to the changes posted in the above threads, I also extended the
global_dirty_state trace with more fields, and improved some more changelog.

[PATCH 1/9] writeback: make writeback_control.nr_to_write straight
[PATCH 2/9] writeback: account per-bdi accumulated written pages
[PATCH 3/9] writeback: bdi write bandwidth estimation
[PATCH 4/9] writeback: show bdi write bandwidth in debugfs
[PATCH 5/9] writeback: consolidate variable names in balance_dirty_pages()
[PATCH 6/9] writeback: introduce smoothed global dirty limit
[PATCH 7/9] writeback: introduce max-pause and pass-good dirty limits
[PATCH 8/9] writeback: scale IO chunk size up to half device bandwidth
[PATCH 9/9] writeback: trace global_dirty_state

They are git pullable from

git:// fs-writeback


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