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Message-ID: <1297404421.7865.24.camel@marge.simson.net>
Date: Fri, 11 Feb 2011 07:07:01 +0100
From: Mike Galbraith <efault@....de>
To: Dhaval Giani <dhaval.giani@...il.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Ingo Molnar <mingo@...e.hu>,
Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 30/28] kernel/user.c: add lock release annotation on
free_user()
On Thu, 2011-02-10 at 19:35 +0100, Dhaval Giani wrote:
> >
> > There were a few more patches after this which cleaned up a few things
> > as well. Let me search them out and let you know the commit IDs.
> >
> 571428be550fbe37160596995e96ad398873fcbd
From: Namhyung Kim <namhyung@...il.com>
Date: Tue, 26 Oct 2010 14:22:43 -0700
Subject: kernel/user.c: add lock release annotation on free_user()
commit 571428be550fbe37160596995e96ad398873fcbd upstream.
free_user() releases uidhash_lock but was missing annotation. Add it.
This removes following sparse warnings:
include/linux/spinlock.h:339:9: warning: context imbalance in 'free_user' - unexpected unlock
kernel/user.c:120:6: warning: context imbalance in 'free_uid' - wrong count at exit
Signed-off-by: Namhyung Kim <namhyung@...il.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Dhaval Giani <dhaval.giani@...il.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Mike Galbraith <efault@....de>
---
kernel/user.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/kernel/user.c b/kernel/user.c
index 8e1c8c0..1b91701 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -91,6 +91,7 @@ static struct user_struct *uid_hash_find(uid_t uid, struct hlist_head *hashent)
* upon function exit.
*/
static void free_user(struct user_struct *up, unsigned long flags)
+ __releases(&uidhash_lock)
{
uid_hash_remove(up);
spin_unlock_irqrestore(&uidhash_lock, flags);
--
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