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authorChao Yu <chao2.yu@samsung.com>2015-02-05 12:55:51 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2015-03-03 20:58:46 +0300
commit8967215954a50947fbd9c2996232548bf6dd9062 (patch)
treea8e3a164f9c3372fe476e23b09f5871379c31af0 /Documentation/filesystems
parent429511cdf8b3a9b894b914f282a9293df405a449 (diff)
downloadlinux-8967215954a50947fbd9c2996232548bf6dd9062.tar.xz
f2fs: add a mount option for rb-tree extent cache
This patch adds a mount option 'extent_cache' in f2fs. It is try to use a rb-tree based extent cache to cache more mapping information with less memory if this option is set, otherwise we will use the original one extent info cache. Suggested-by: Changman Lee <cm224.lee@samsung.com> Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/f2fs.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt
index dac11d7fef27..48e2123c2582 100644
--- a/Documentation/filesystems/f2fs.txt
+++ b/Documentation/filesystems/f2fs.txt
@@ -140,6 +140,10 @@ nobarrier This option can be used if underlying storage guarantees
fastboot This option is used when a system wants to reduce mount
time as much as possible, even though normal performance
can be sacrificed.
+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.
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