mount options: fix afs

Add a .show_options super operation to afs.

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

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/fs/afs/super.c b/fs/afs/super.c
index 4b2558c42213..36bbce45f44b 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -52,6 +52,7 @@ static const struct super_operations afs_super_ops = {
         .clear_inode    = afs_clear_inode,
         .umount_begin   = afs_umount_begin,
         .put_super      = afs_put_super,
+        .show_options   = generic_show_options,
 };
 
 static struct kmem_cache *afs_inode_cachep;
@@ -357,6 +358,7 @@ static int afs_get_sb(struct file_system_type *fs_type,
         struct super_block *sb;
         struct afs_volume *vol;
         struct key *key;
+        char *new_opts = kstrdup(options, GFP_KERNEL);
         int ret;
 
         _enter(",,%s,%p", dev_name, options);
@@ -408,9 +410,11 @@ static int afs_get_sb(struct file_system_type *fs_type,
                         deactivate_super(sb);
                         goto error;
                 }
+                sb->s_options = new_opts;
                 sb->s_flags |= MS_ACTIVE;
         } else {
                 _debug("reuse");
+                kfree(new_opts);
                 ASSERTCMP(sb->s_flags, &, MS_ACTIVE);
         }
 
@@ -424,6 +428,7 @@ error:
         afs_put_volume(params.volume);
         afs_put_cell(params.cell);
         key_put(params.key);
+        kfree(new_opts);
         _leave(" = %d", ret);
         return ret;
 }