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| author |   Jaegeuk Kim <jaegeuk@kernel.org> | 2017-03-28 18:07:38 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-04-05 11:05:06 -0700 |
| commit | 687de7f1010cb819d04b768556960d3689abe02b (patch) | |
| tree | c32a4ccac2d084d51e2074e7184598bf4cd37349 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | f2fs: write small sized IO to hot log (diff) | |
| download | linux-dev-687de7f1010cb819d04b768556960d3689abe02b.tar.xz linux-dev-687de7f1010cb819d04b768556960d3689abe02b.zip | |
f2fs: avoid IO split due to mixed WB_SYNC_ALL and WB_SYNC_NONE
If two threads try to flush dirty pages in different inodes respectively,
f2fs_write_data_pages() will produce WRITE and WRITE_SYNC one at a time,
resulting in a lot of 4KB seperated IOs.
So, this patch gives higher priority to WB_SYNC_ALL IOs and gathers write
IOs with a big WRITE_SYNC'ed bio.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions