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Commit 1b2eb96b authored Jan 08, 2020 by Jaegeuk Kim

f2fs: update f2fs document regarding to fsync_mode



This patch adds missing fsync_mode entry in f2fs document.

Fixes: 04485987 ("f2fs: introduce async IPU policy")
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

parent e07cead0

Documentation/filesystems/f2fs.txt

+2 −1

Original line number	Diff line number	Diff line
		@@ -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

fs/f2fs/segment.h

+3 −2

Original line number	Diff line number	Diff line
		@@ -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