1 files changed, 18 insertions, 0 deletions

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 7c652b3e1511..9b888fbf08b6 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -133,6 +133,17 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
                 return ret;
         }
 
+        /*
+         * if there is no written data, don't waste time to write recovery info.
+         */
+        if (!is_inode_flag_set(fi, FI_APPEND_WRITE) &&
+                !exist_written_data(sbi, inode->i_ino, APPEND_INO)) {
+                if (is_inode_flag_set(fi, FI_UPDATE_WRITE) ||
+                        exist_written_data(sbi, inode->i_ino, UPDATE_INO))
+                        goto flush_out;
+                goto out;
+        }
+
         /* guarantee free sections for fsync */
         f2fs_balance_fs(sbi);
 
@@ -188,6 +199,13 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
                 ret = wait_on_node_pages_writeback(sbi, inode->i_ino);
                 if (ret)
                         goto out;
+
+                /* once recovery info is written, don't need to tack this */
+                remove_dirty_inode(sbi, inode->i_ino, APPEND_INO);
+                clear_inode_flag(fi, FI_APPEND_WRITE);
+flush_out:
+                remove_dirty_inode(sbi, inode->i_ino, UPDATE_INO);
+                clear_inode_flag(fi, FI_UPDATE_WRITE);
                 ret = f2fs_issue_flush(F2FS_SB(inode->i_sb));
         }
 out: