diff options
| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2014-09-10 16:53:02 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2014-09-16 04:10:44 -0700 |
| commit | c1ce1b02bb25640567dc484dc94d3a195d21e705 (patch) | |
| tree | 66d98ac24b6959a78618b1706f156f8f76614ad8 /Documentation/pti | |
| parent | a7ffdbe22cecaed59b5d76a5f003d68907d64240 (diff) | |
| download | linux-c1ce1b02bb25640567dc484dc94d3a195d21e705.tar.gz linux-c1ce1b02bb25640567dc484dc94d3a195d21e705.tar.bz2 linux-c1ce1b02bb25640567dc484dc94d3a195d21e705.zip | |
f2fs: give an option to enable in-place-updates during fsync to users
If user wrote F2FS_IPU_FSYNC:4 in /sys/fs/f2fs/ipu_policy, f2fs_sync_file
only starts to try in-place-updates.
And, if the number of dirty pages is over /sys/fs/f2fs/min_fsync_blocks, it
keeps out-of-order manner. Otherwise, it triggers in-place-updates.
This may be used by storage showing very high random write performance.
For example, it can be used when,
Seq. writes (Data) + wait + Seq. writes (Node)
is pretty much slower than,
Rand. writes (Data)
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation/pti')
0 files changed, 0 insertions, 0 deletions