linux-kernel - [PATCH 1/8] do_coredump: do not take BKL

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Message-Id: <1278194552-24943-2-git-send-email-arnd@arndb.de>
Date:	Sun,  4 Jul 2010 00:02:25 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-kernel@...r.kernel.org
Cc:	John Kacur <jkacur@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 1/8] do_coredump: do not take BKL

core_pattern is not actually protected and hasn't been
ever since we introduced procfs support for sysctl -- a
_long_ time. Don't take it here either.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 fs/exec.c |    6 ------
 1 files changed, 0 insertions(+), 6 deletions(-)

diff --git a/fs/exec.c b/fs/exec.c
index e19de6a..3d7aeeb 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1891,13 +1891,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
 	 */
 	clear_thread_flag(TIF_SIGPENDING);
 
-	/*
-	 * lock_kernel() because format_corename() is controlled by sysctl, which
-	 * uses lock_kernel()
-	 */
- 	lock_kernel();
 	ispipe = format_corename(corename, signr);
-	unlock_kernel();
 
  	if (ispipe) {
 		int dump_count;
-- 
1.7.1

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