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f2fs: add noextent_cache mount option 

This patch adds noextent_cache mount option.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2015-06-25 17:43:04 -07:00
parent 554df79e52
commit 7daaea256d
2 changed files with 10 additions and 1 deletions
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4
Documentation/filesystems/f2fs.txt
View File

@ -143,7 +143,9 @@ fastboot This option is used when a system wants to reduce mount
extent_cache Enable an extent cache based on rb-tree, it can cache extent_cache Enable an extent cache based on rb-tree, it can cache
as many as extent which map between contiguous logical as many as extent which map between contiguous logical
address and physical address per inode, resulting in address and physical address per inode, resulting in
increasing the cache hit ratio. increasing the cache hit ratio. Set by default.
noextent_cache Diable an extent cache based on rb-tree explicitly, see
the above extent_cache mount option.
noinline_data Disable the inline data feature, inline data feature is noinline_data Disable the inline data feature, inline data feature is
enabled by default. enabled by default.

7
fs/f2fs/super.c
View File

@ -65,6 +65,7 @@ enum {
Opt_nobarrier, Opt_nobarrier,
Opt_fastboot, Opt_fastboot,
Opt_extent_cache, Opt_extent_cache,
Opt_noextent_cache,
Opt_noinline_data, Opt_noinline_data,
Opt_err, Opt_err,
}; };
@ -88,6 +89,7 @@ static match_table_t f2fs_tokens = {
{Opt_nobarrier, "nobarrier"}, {Opt_nobarrier, "nobarrier"},
{Opt_fastboot, "fastboot"}, {Opt_fastboot, "fastboot"},
{Opt_extent_cache, "extent_cache"}, {Opt_extent_cache, "extent_cache"},
{Opt_noextent_cache, "noextent_cache"},
{Opt_noinline_data, "noinline_data"}, {Opt_noinline_data, "noinline_data"},
{Opt_err, NULL}, {Opt_err, NULL},
}; };
@ -389,6 +391,9 @@ static int parse_options(struct super_block *sb, char *options)
case Opt_extent_cache: case Opt_extent_cache:
set_opt(sbi, EXTENT_CACHE); set_opt(sbi, EXTENT_CACHE);
break; break;
case Opt_noextent_cache:
clear_opt(sbi, EXTENT_CACHE);
break;
case Opt_noinline_data: case Opt_noinline_data:
clear_opt(sbi, INLINE_DATA); clear_opt(sbi, INLINE_DATA);
break; break;
@ -662,6 +667,8 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
seq_puts(seq, ",fastboot"); seq_puts(seq, ",fastboot");
if (test_opt(sbi, EXTENT_CACHE)) if (test_opt(sbi, EXTENT_CACHE))
seq_puts(seq, ",extent_cache"); seq_puts(seq, ",extent_cache");
else
seq_puts(seq, ",noextent_cache");
seq_printf(seq, ",active_logs=%u", sbi->active_logs); seq_printf(seq, ",active_logs=%u", sbi->active_logs);
return 0; return 0;