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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>
This commit is contained in:
Yangtao Li 2022-10-25 01:54:01 +08:00 committed by Jaegeuk Kim
parent b5f1a218ae
commit 6047de5482
2 changed files with 9 additions and 0 deletions
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2
Documentation/filesystems/f2fs.rst
View File

@ -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.

7
fs/f2fs/super.c
View File

@ -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))