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authorChao Yu <yuchao0@huawei.com>2020-04-08 14:56:32 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2020-05-12 06:36:46 +0300
commit6d92b201035dfe77426f8814fd5259db385a18b3 (patch)
treedb469dfc8a3f81374c5e212035ea34fc58d83ac7 /Documentation/filesystems/f2fs.rst
parent5e6bbde95982300d66d78fb282d4ee39df78fc33 (diff)
downloadlinux-6d92b201035dfe77426f8814fd5259db385a18b3.tar.xz
f2fs: compress: support lzo-rle compress algorithm
LZO-RLE extension (run length encoding) was introduced to improve performance of LZO algorithm in scenario of data contains many zeros, zram has changed to use this extended algorithm by default, this patch adds to support this algorithm extension, to enable this extension, it needs to enable F2FS_FS_LZO and F2FS_FS_LZORLE config, and specifies "compress_algorithm=lzo-rle" mountoption. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation/filesystems/f2fs.rst')
-rw-r--r--Documentation/filesystems/f2fs.rst2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/filesystems/f2fs.rst b/Documentation/filesystems/f2fs.rst
index 87d794bc75a4..96e3f89d7aba 100644
--- a/Documentation/filesystems/f2fs.rst
+++ b/Documentation/filesystems/f2fs.rst
@@ -244,7 +244,7 @@ checkpoint=%s[:%u[%]] Set to "disable" to turn off checkpointing. Set to "enabl
would be unusable can be viewed at /sys/fs/f2fs/<disk>/unusable
This space is reclaimed once checkpoint=enable.
compress_algorithm=%s Control compress algorithm, currently f2fs supports "lzo",
- "lz4" and "zstd" algorithm.
+ "lz4", "zstd" and "lzo-rle" algorithm.
compress_log_size=%u Support configuring compress cluster size, the size will
be 4KB * (1 << %u), 16KB is minimum size, also it's
default size.