diff options
| -rw-r--r-- | Documentation/filesystems/f2fs.txt | 3 | ||||
| -rw-r--r-- | fs/f2fs/segment.h | 5 |
2 files changed, 5 insertions, 3 deletions
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt index b80a7b69f210..ee61ace30276 100644 --- a/Documentation/filesystems/f2fs.txt +++ b/Documentation/filesystems/f2fs.txt @@ -334,7 +334,8 @@ Files in /sys/fs/f2fs/<devname> updates in f2fs. User can set: 0x01: F2FS_IPU_FORCE, 0x02: F2FS_IPU_SSR, 0x04: F2FS_IPU_UTIL, 0x08: F2FS_IPU_SSR_UTIL, - 0x10: F2FS_IPU_FSYNC, 0x40: F2FS_IPU_NOCACHE. + 0x10: F2FS_IPU_FSYNC, 0x20: F2FS_IPU_ASYNC, + 0x40: F2FS_IPU_NOCACHE. Refer segment.h for details. min_ipu_util This parameter controls the threshold to trigger diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 5e6cd8d8411d..459dc3901a57 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -607,9 +607,10 @@ static inline int utilization(struct f2fs_sb_info *sbi) * threashold, * F2FS_IPU_FSYNC - activated in fsync path only for high performance flash * storages. IPU will be triggered only if the # of dirty - * pages over min_fsync_blocks. + * pages over min_fsync_blocks. (=default option) + * F2FS_IPU_ASYNC - do IPU given by asynchronous write requests. * F2FS_IPU_NOCACHE - disable IPU bio cache. - * F2FS_IPUT_DISABLE - disable IPU. (=default option) + * F2FS_IPUT_DISABLE - disable IPU. (=default option in LFS mode) */ #define DEF_MIN_IPU_UTIL 70 #define DEF_MIN_FSYNC_BLOCKS 8 |