1 files changed, 4 insertions, 0 deletions

diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt
index 2f6d0218dd22..25311e113e75 100644
--- a/Documentation/filesystems/f2fs.txt
+++ b/Documentation/filesystems/f2fs.txt
@@ -122,6 +122,10 @@ disable_ext_identify   Disable the extension list configured by mkfs, so f2fs
 inline_xattr           Enable the inline xattrs feature.
 inline_data            Enable the inline data feature: New created small(<~3.4k)
                        files can be written into inode block.
+flush_merge            Merge concurrent cache_flush commands as much as possible
+                       to eliminate redundant command issues. If the underlying
+                       device handles the cache_flush command relatively slowly,
+                       recommend to enable this option.
 
 ================================================================================
 DEBUGFS ENTRIES