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>

diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index d1d9d9088371d275e78db78f571dd9ce110635b3..6f60336c6628182804aa39086040968f174fbba7 100644 (file)
--- 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,
 };