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>
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt
index e9e750e..e2d5105 100644
--- a/Documentation/filesystems/f2fs.txt
+++ b/Documentation/filesystems/f2fs.txt
@@ -143,7 +143,9 @@
extent_cache Enable an extent cache based on rb-tree, it can cache
as many as extent which map between contiguous logical
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
enabled by default.
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index bc7684b..9252022 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -65,6 +65,7 @@
Opt_nobarrier,
Opt_fastboot,
Opt_extent_cache,
+ Opt_noextent_cache,
Opt_noinline_data,
Opt_err,
};
@@ -88,6 +89,7 @@
{Opt_nobarrier, "nobarrier"},
{Opt_fastboot, "fastboot"},
{Opt_extent_cache, "extent_cache"},
+ {Opt_noextent_cache, "noextent_cache"},
{Opt_noinline_data, "noinline_data"},
{Opt_err, NULL},
};
@@ -389,6 +391,9 @@
case Opt_extent_cache:
set_opt(sbi, EXTENT_CACHE);
break;
+ case Opt_noextent_cache:
+ clear_opt(sbi, EXTENT_CACHE);
+ break;
case Opt_noinline_data:
clear_opt(sbi, INLINE_DATA);
break;
@@ -662,6 +667,8 @@
seq_puts(seq, ",fastboot");
if (test_opt(sbi, EXTENT_CACHE))
seq_puts(seq, ",extent_cache");
+ else
+ seq_puts(seq, ",noextent_cache");
seq_printf(seq, ",active_logs=%u", sbi->active_logs);
return 0;