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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-02-22 23:09:30 +0100 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-03-13 00:05:51 +0100 |
| commit | 84b89e5d943d8d6b997fcebb4609373e1b3e4b03 (patch) | |
| tree | baabb3abc1ca2d978615eee6ef43dbdd115dbddb /fs/f2fs/super.c | |
| parent | f2fs: add mount option for segment allocation policy (diff) | |
| download | linux-84b89e5d943d8d6b997fcebb4609373e1b3e4b03.tar.xz linux-84b89e5d943d8d6b997fcebb4609373e1b3e4b03.zip | |
f2fs: add auto tuning for small devices
If f2fs is running on top of very small devices, it's worth to avoid abusing
free LBAs. In order to achieve that, this patch introduces some parameter
tuning.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | fs/f2fs/super.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 16d157e44184..9b6c53b69535 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -2515,6 +2515,18 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi) return 0; } +static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) +{ + struct f2fs_sm_info *sm_i = SM_I(sbi); + + /* adjust parameters according to the volume size */ + if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) { + sbi->alloc_mode = ALLOC_MODE_REUSE; + sm_i->dcc_info->discard_granularity = 1; + sm_i->ipu_policy = 1 << F2FS_IPU_FORCE; + } +} + static int f2fs_fill_super(struct super_block *sb, void *data, int silent) { struct f2fs_sb_info *sbi; @@ -2867,6 +2879,8 @@ skip_recovery: f2fs_join_shrinker(sbi); + f2fs_tuning_parameters(sbi); + f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx", cur_cp_version(F2FS_CKPT(sbi))); f2fs_update_time(sbi, CP_TIME); |