bfs: add ->sync_fs

Add a ->sync_fs method for data integrity syncs, and reimplement
->write_super ontop of it.

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

1 files changed, 21 insertions, 11 deletions

diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index d1d9d9088371..6f60336c6628 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -216,6 +216,26 @@ static void bfs_delete_inode(struct inode *inode)
         clear_inode(inode);
 }
 
+static int bfs_sync_fs(struct super_block *sb, int wait)
+{
+        struct bfs_sb_info *info = BFS_SB(sb);
+
+        mutex_lock(&info->bfs_lock);
+        mark_buffer_dirty(info->si_sbh);
+        sb->s_dirt = 0;
+        mutex_unlock(&info->bfs_lock);
+
+        return 0;
+}
+
+static void bfs_write_super(struct super_block *sb)
+{
+        if (!(sb->s_flags & MS_RDONLY))
+                bfs_sync_fs(sb, 1);
+        else
+                sb->s_dirt = 0;
+}
+
 static void bfs_put_super(struct super_block *s)
 {
         struct bfs_sb_info *info = BFS_SB(s);
@@ -254,17 +274,6 @@ static int bfs_statfs(struct dentry *dentry, struct kstatfs *buf)
         return 0;
 }
 
-static void bfs_write_super(struct super_block *s)
-{
-        struct bfs_sb_info *info = BFS_SB(s);
-
-        mutex_lock(&info->bfs_lock);
-        if (!(s->s_flags & MS_RDONLY))
-                mark_buffer_dirty(info->si_sbh);
-        s->s_dirt = 0;
-        mutex_unlock(&info->bfs_lock);
-}
-
 static struct kmem_cache *bfs_inode_cachep;
 
 static struct inode *bfs_alloc_inode(struct super_block *sb)
@@ -312,6 +321,7 @@ static const struct super_operations bfs_sops = {
         .delete_inode   = bfs_delete_inode,
         .put_super      = bfs_put_super,
         .write_super    = bfs_write_super,
+        .sync_fs        = bfs_sync_fs,
         .statfs         = bfs_statfs,
 };