(namespace) Revert "UBUNTU: SAUCE: quota: Require that qids passed to dqget()...

(namespace) Revert "UBUNTU: SAUCE: quota: Require that qids passed to dqget() be valid and map into s_user_ns"

BugLink: http://bugs.launchpad.net/bugs/1634964

This reverts commit 2c79b9bf in
order to apply the corresponding upstream patches.
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

fs/quota/dquot.c

@@ -834,12 +834,6 @@ struct dquot *dqget(struct super_block *sb, struct kqid qid)
 	unsigned int hashent = hashfn(sb, qid);
 	struct dquot *dquot, *empty = NULL;
 
-	/* qid must be valid and must map into sb's userns */
-	if (!qid_valid(qid))
-		return ERR_PTR(-EINVAL);
-	if (from_kqid(sb->s_user_ns, qid) == (qid_t)-1)
-		return ERR_PTR(-EOVERFLOW);
-
         if (!sb_has_quota_active(sb, qid.type))
 		return ERR_PTR(-ESRCH);
 we_slept: