quota: constify struct path in quota_on

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 2d44542..5acd0c47 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -80,7 +80,7 @@
 }
 
 static int quota_quotaon(struct super_block *sb, int type, qid_t id,
-		         struct path *path)
+		         const struct path *path)
 {
 	if (!sb->s_qcop->quota_on && !sb->s_qcop->quota_enable)
 		return -ENOSYS;
@@ -700,7 +700,7 @@
 
 /* Copy parameters and call proper function */
 static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id,
-		       void __user *addr, struct path *path)
+		       void __user *addr, const struct path *path)
 {
 	int ret;