diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 14da530..fbeecdc 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -577,7 +577,7 @@
 	return i_pos;
 }
 
-static int fat_write_inode(struct inode *inode, int wait)
+static int __fat_write_inode(struct inode *inode, int wait)
 {
 	struct super_block *sb = inode->i_sb;
 	struct msdos_sb_info *sbi = MSDOS_SB(sb);
@@ -634,9 +634,14 @@
 	return err;
 }
 
+static int fat_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+	return __fat_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
+}
+
 int fat_sync_inode(struct inode *inode)
 {
-	return fat_write_inode(inode, 1);
+	return __fat_write_inode(inode, 1);
 }
 
 EXPORT_SYMBOL_GPL(fat_sync_inode);