diff options
| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-05-25 18:02:58 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-05-29 12:04:08 -0700 |
| commit | d6290814b018aa9a81163b4c806935b315041833 (patch) | |
| tree | aa4a5b75437e501032d8e8fbc6409f7cb0a9929a /Documentation/filesystems | |
| parent | 9a997188ff7ab2110c6fefa85977d1aa8005ae77 (diff) | |
f2fs: add fsync_mode=nobarrier for non-atomic files
For non-atomic files, this patch adds an option to give nobarrier which
doesn't issue flush commands to the device.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/f2fs.txt | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt index 12a147c9f87f..69f8de995739 100644 --- a/Documentation/filesystems/f2fs.txt +++ b/Documentation/filesystems/f2fs.txt @@ -182,13 +182,15 @@ whint_mode=%s Control which write hints are passed down to block passes down hints with its policy. alloc_mode=%s Adjust block allocation policy, which supports "reuse" and "default". -fsync_mode=%s Control the policy of fsync. Currently supports "posix" - and "strict". In "posix" mode, which is default, fsync - will follow POSIX semantics and does a light operation - to improve the filesystem performance. In "strict" mode, - fsync will be heavy and behaves in line with xfs, ext4 - and btrfs, where xfstest generic/342 will pass, but the - performance will regress. +fsync_mode=%s Control the policy of fsync. Currently supports "posix", + "strict", and "nobarrier". In "posix" mode, which is + default, fsync will follow POSIX semantics and does a + light operation to improve the filesystem performance. + In "strict" mode, fsync will be heavy and behaves in line + with xfs, ext4 and btrfs, where xfstest generic/342 will + pass, but the performance will regress. "nobarrier" is + based on "posix", but doesn't issue flush command for + non-atomic files likewise "nobarrier" mount option. test_dummy_encryption Enable dummy encryption, which provides a fake fscrypt context. The fake fscrypt context is used by xfstests. |