[RFC 15/18] limits: track RLIMIT_MSGQUEUE actual max

From: Topi Miettinen <toiwoton@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Topi Miettinen <toiwoton@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Michal Hocko <mhocko@suse.com>, Al Viro <viro@zeniv.linux.org.uk>,
	Doug Ledford <dledford@redhat.com>,
	Vladimir Davydov <vdavydov@virtuozzo.com>,
	Marcus Gelderie <redmnic@gmail.com>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [RFC 15/18] limits: track RLIMIT_MSGQUEUE actual max
Date: Mon, 13 Jun 2016 22:44:22 +0300	[thread overview]
Message-ID: <1465847065-3577-16-git-send-email-toiwoton@gmail.com> (raw)
In-Reply-To: <1465847065-3577-1-git-send-email-toiwoton@gmail.com>

Track maximum size of message queues, presented in /proc/self/limits.

Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
---
 ipc/mqueue.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index ade739f..edccf55 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -287,6 +287,8 @@ static struct inode *mqueue_get_inode(struct super_block *sb,
 
 		/* all is ok */
 		info->user = get_uid(u);
+		/* XXX resource limits apply per task, not per user */
+		bump_rlimit(RLIMIT_MSGQUEUE, u->mq_bytes);
 	} else if (S_ISDIR(mode)) {
 		inc_nlink(inode);
 		/* Some things misbehave if size == 0 on a directory */
-- 
2.8.1
