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| 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 /fs/f2fs/super.c | |
| parent | a7ffdbe22cecaed59b5d76a5f003d68907d64240 (diff) | |
| download | blackbird-op-linux-c1ce1b02bb25640567dc484dc94d3a195d21e705.tar.gz blackbird-op-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 'fs/f2fs/super.c')
| -rw-r--r-- | fs/f2fs/super.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b5af9be94a4d..ed4095e5e8a7 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -190,6 +190,7 @@ F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, max_small_discards, max_discards); F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); @@ -204,6 +205,7 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(max_small_discards), ATTR_LIST(ipu_policy), ATTR_LIST(min_ipu_util), + ATTR_LIST(min_fsync_blocks), ATTR_LIST(max_victim_search), ATTR_LIST(dir_level), ATTR_LIST(ram_thresh), |
