diff options
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/f2fs.txt | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt index a2046a7d0a9d..d010da85a769 100644 --- a/Documentation/filesystems/f2fs.txt +++ b/Documentation/filesystems/f2fs.txt @@ -194,13 +194,20 @@ Files in /sys/fs/f2fs/<devname> updates in f2fs. There are five policies: 0: F2FS_IPU_FORCE, 1: F2FS_IPU_SSR, 2: F2FS_IPU_UTIL, 3: F2FS_IPU_SSR_UTIL, - 4: F2FS_IPU_DISABLE. + 4: F2FS_IPU_FSYNC, 5: F2FS_IPU_DISABLE. min_ipu_util This parameter controls the threshold to trigger in-place-updates. The number indicates percentage of the filesystem utilization, and used by F2FS_IPU_UTIL and F2FS_IPU_SSR_UTIL policies. + min_fsync_blocks This parameter controls the threshold to trigger + in-place-updates when F2FS_IPU_FSYNC mode is set. + The number indicates the number of dirty pages + when fsync needs to flush on its call path. If + the number is less than this value, it triggers + in-place-updates. + max_victim_search This parameter controls the number of trials to find a victim segment when conducting SSR and cleaning operations. The default value is 4096 |