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| author | Yangtao Li <frank.li@vivo.com> | 2022-10-25 01:54:01 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2022-11-01 17:56:02 -0700 |
| commit | 6047de5482c33d5f912cdc907336fde9ebc5714e (patch) | |
| tree | 9268c76a74061e980602e45bcc2dc9677aa6e7d1 | |
| parent | b5f1a218ae5e4339130d6e733f0e63d623e09a2c (diff) | |
| download | lwn-6047de5482c33d5f912cdc907336fde9ebc5714e.tar.gz lwn-6047de5482c33d5f912cdc907336fde9ebc5714e.zip | |
f2fs: add barrier mount option
This patch adds a mount option, barrier, in f2fs.
The barrier option is the opposite of nobarrier.
If this option is set, cache_flush commands are allowed to be issued.
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | Documentation/filesystems/f2fs.rst | 2 | ||||
| -rw-r--r-- | fs/f2fs/super.c | 7 |
2 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/filesystems/f2fs.rst b/Documentation/filesystems/f2fs.rst index b797e8ec96ed..6e67c5e6c7c3 100644 --- a/Documentation/filesystems/f2fs.rst +++ b/Documentation/filesystems/f2fs.rst @@ -154,6 +154,8 @@ nobarrier This option can be used if underlying storage guarantees If this option is set, no cache_flush commands are issued but f2fs still guarantees the write ordering of all the data writes. +barrier If this option is set, cache_flush commands are allowed to be + issued. fastboot This option is used when a system wants to reduce mount time as much as possible, even though normal performance can be sacrificed. diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index df26fbe2bf58..a247027711d8 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -111,6 +111,7 @@ enum { Opt_noinline_dentry, Opt_flush_merge, Opt_noflush_merge, + Opt_barrier, Opt_nobarrier, Opt_fastboot, Opt_extent_cache, @@ -187,6 +188,7 @@ static match_table_t f2fs_tokens = { {Opt_noinline_dentry, "noinline_dentry"}, {Opt_flush_merge, "flush_merge"}, {Opt_noflush_merge, "noflush_merge"}, + {Opt_barrier, "barrier"}, {Opt_nobarrier, "nobarrier"}, {Opt_fastboot, "fastboot"}, {Opt_extent_cache, "extent_cache"}, @@ -807,6 +809,9 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount) case Opt_nobarrier: set_opt(sbi, NOBARRIER); break; + case Opt_barrier: + clear_opt(sbi, NOBARRIER); + break; case Opt_fastboot: set_opt(sbi, FASTBOOT); break; @@ -1940,6 +1945,8 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root) seq_puts(seq, ",flush_merge"); if (test_opt(sbi, NOBARRIER)) seq_puts(seq, ",nobarrier"); + else + seq_puts(seq, ",barrier"); if (test_opt(sbi, FASTBOOT)) seq_puts(seq, ",fastboot"); if (test_opt(sbi, EXTENT_CACHE)) |