From: Eric W. Biederman <ebiederm@xmission.com>
Date: Tue, 5 Jul 2016 16:10:57 +0000 (-0500)
Subject: quota: Handle quota data stored in s_user_ns in quota_setxquota
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=cfd4c70a18c4e806aaac2f483153dae01e0ace1c;p=linux-beck.git

quota: Handle quota data stored in s_user_ns in quota_setxquota

In Q_XSETQLIMIT use sb->s_user_ns to detect when we are dealing with
the filesystems notion of id 0.

Cc: Jan Kara <jack@suse.cz>
Acked-by: Seth Forshee <seth.forshee@canonical.com>
Inspired-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---

diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 73f6f4cf0a21..35df08ee9c97 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -584,7 +584,7 @@ static int quota_setxquota(struct super_block *sb, int type, qid_t id,
 	if (!qid_has_mapping(sb->s_user_ns, qid))
 		return -EINVAL;
 	/* Are we actually setting timer / warning limits for all users? */
-	if (from_kqid(&init_user_ns, qid) == 0 &&
+	if (from_kqid(sb->s_user_ns, qid) == 0 &&
 	    fdq.d_fieldmask & (FS_DQ_WARNS_MASK | FS_DQ_TIMER_MASK)) {
 		struct qc_info qinfo;
 		int ret;