fat: add ->sync_fs

Add a ->sync_fs method for data integrity syncs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 11 insertions, 0 deletions

diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 476f80b175fe..51a5ecf9000a 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -449,6 +449,16 @@ static void fat_write_super(struct super_block *sb)
         unlock_super(sb);
 }
 
+static int fat_sync_fs(struct super_block *sb, int wait)
+{
+        lock_super(sb);
+        fat_clusters_flush(sb);
+        sb->s_dirt = 0;
+        unlock_super(sb);
+
+        return 0;
+}
+
 static void fat_put_super(struct super_block *sb)
 {
         struct msdos_sb_info *sbi = MSDOS_SB(sb);
@@ -643,6 +653,7 @@ static const struct super_operations fat_sops = {
         .delete_inode   = fat_delete_inode,
         .put_super      = fat_put_super,
         .write_super    = fat_write_super,
+        .sync_fs        = fat_sync_fs,
         .statfs         = fat_statfs,
         .clear_inode    = fat_clear_inode,
         .remount_fs     = fat_remount,