mount options: fix autofs

Add a .show_options super operation to autofs.

Use generic_show_options() and save the complete option string in
autofs_fill_super().

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index 708bdb89fea1..dda510d31f84 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -54,6 +54,7 @@ out_kill_sb:
 
 static const struct super_operations autofs_sops = {
         .statfs         = simple_statfs,
+        .show_options   = generic_show_options,
 };
 
 enum {Opt_err, Opt_fd, Opt_uid, Opt_gid, Opt_pgrp, Opt_minproto, Opt_maxproto};
@@ -140,6 +141,8 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
         int minproto, maxproto;
         pid_t pgid;
 
+        save_mount_options(s, data);
+
         sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
         if (!sbi)
                 goto fail_unlock;