fs/adfs: add helper to get discrecord from map
Add a helper to get the disc record from the map, rather than open
coding this in adfs_fill_super().
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/adfs/adfs.h b/fs/adfs/adfs.h
index 804c6a7..5a72a0e 100644
--- a/fs/adfs/adfs.h
+++ b/fs/adfs/adfs.h
@@ -1,4 +1,5 @@
/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/buffer_head.h>
#include <linux/fs.h>
#include <linux/adfs_fs.h>
@@ -18,8 +19,6 @@
#include "dir_f.h"
-struct buffer_head;
-
/*
* adfs file system inode data in memory
*/
@@ -195,3 +194,10 @@ __adfs_block_map(struct super_block *sb, unsigned int object_id,
return adfs_map_lookup(sb, object_id >> 8, block);
}
+
+/* Return the disc record from the map */
+static inline
+struct adfs_discrecord *adfs_map_discrecord(struct adfs_discmap *dm)
+{
+ return (void *)(dm[0].dm_bh->b_data + 4);
+}