quota: explicitly set ->dq_op and ->s_qcop

Only set the quota operation vectors if the filesystem actually supports
quota instead of doing it for all filesystems in alloc_super().

[Jan Kara: Export dquot_operations and vfs_quotactl_ops]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 7d940a3a3d93..2e7ec5e8cda4 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -481,6 +481,10 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
          */
         sb->s_op = &jfs_super_operations;
         sb->s_export_op = &jfs_export_operations;
+#ifdef CONFIG_QUOTA
+        sb->dq_op = &dquot_operations;
+        sb->s_qcop = &vfs_quotactl_ops;
+#endif
 
         /*
          * Initialize direct-mapping inode/address-space