f2fs: get io size bit from mount option
This patch adds to set io_size_bits from mount option.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt
index 753dd4f..d99face 100644
--- a/Documentation/filesystems/f2fs.txt
+++ b/Documentation/filesystems/f2fs.txt
@@ -157,6 +157,8 @@
mode=%s Control block allocation mode which supports "adaptive"
and "lfs". In "lfs" mode, there should be no random
writes towards main area.
+io_bits=%u Set the bit size of write IO requests. It should be set
+ with "mode=lfs".
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