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| author | Wu Fengguang <fengguang.wu@intel.com> | 2011-12-03 01:21:51 +0100 |
|---|---|---|
| committer | Wu Fengguang <fengguang.wu@intel.com> | 2011-12-08 03:49:29 +0100 |
| commit | 82e230a07de3812a5e87a27979f033dad59172e3 (patch) | |
| tree | 672ecaa3a1cf3585aa941491b2cf77ae38f1d8ff /mm/mremap.c | |
| parent | writeback: permit through good bdi even when global dirty exceeded (diff) | |
| download | linux-82e230a07de3812a5e87a27979f033dad59172e3.tar.xz linux-82e230a07de3812a5e87a27979f033dad59172e3.zip | |
writeback: set max_pause to lowest value on zero bdi_dirty
Some trace shows lots of bdi_dirty=0 lines where it's actually some
small value if w/o the accounting errors in the per-cpu bdi stats.
In this case the max pause time should really be set to the smallest
(non-zero) value to avoid IO queue underrun and improve throughput.
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Diffstat (limited to 'mm/mremap.c')
0 files changed, 0 insertions, 0 deletions