new helper: get_tree_keyed()

For vfs_get_keyed_super users.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 10 insertions, 0 deletions

diff --git a/fs/super.c b/fs/super.c
index 5960578a4076..0220def9baba 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1211,6 +1211,16 @@ int get_tree_single(struct fs_context *fc,
 }
 EXPORT_SYMBOL(get_tree_single);
 
+int get_tree_keyed(struct fs_context *fc,
+                  int (*fill_super)(struct super_block *sb,
+                                    struct fs_context *fc),
+                void *key)
+{
+        fc->s_fs_info = key;
+        return vfs_get_super(fc, vfs_get_keyed_super, fill_super);
+}
+EXPORT_SYMBOL(get_tree_keyed);
+
 #ifdef CONFIG_BLOCK
 static int set_bdev_super(struct super_block *s, void *data)
 {