nilfs2: convert to use the new mount API

Convert nilfs2 to use the new mount API.

[[email protected]: v2]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
[konishi.ryusuke: fixed missing SB_RDONLY flag repair in nilfs_reconfigure]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Eric Sandeen <[email protected]>
Signed-off-by: Ryusuke Konishi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: Eric Sandeen

fs/nilfs2/nilfs.h

@@ -335,8 +335,8 @@ void __nilfs_error(struct super_block *sb, const char *function,
 
 extern struct nilfs_super_block *
 nilfs_read_super_block(struct super_block *, u64, int, struct buffer_head **);
-extern int nilfs_store_magic_and_option(struct super_block *,
-					struct nilfs_super_block *, char *);
+extern int nilfs_store_magic(struct super_block *sb,
+			     struct nilfs_super_block *sbp);
 extern int nilfs_check_feature_compatibility(struct super_block *,
 					     struct nilfs_super_block *);
 extern void nilfs_set_log_cursor(struct nilfs_super_block *,