logfs: fix a leak in get_sb

a) switch ->put_device() to logfs_super *
b) actually call it on early failures in logfs_get_sb_device()

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

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/logfs/logfs.h b/fs/logfs/logfs.h
index 5d2e66b48290..446c0f12d899 100644
--- a/fs/logfs/logfs.h
+++ b/fs/logfs/logfs.h
@@ -136,6 +136,7 @@ struct logfs_area_ops {
         int     (*erase_segment)(struct logfs_area *area);
 };
 
+struct logfs_super;     /* forward */
 /**
  * struct logfs_device_ops - device access operations
  *
@@ -156,7 +157,7 @@ struct logfs_device_ops {
                         int ensure_write);
         int (*can_write_buf)(struct super_block *sb, u64 ofs);
         void (*sync)(struct super_block *sb);
-        void (*put_device)(struct super_block *sb);
+        void (*put_device)(struct logfs_super *s);
 };
 
 /**