From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756699Ab3AOV1z (ORCPT ); Tue, 15 Jan 2013 16:27:55 -0500 Received: from mail-pa0-f41.google.com ([209.85.220.41]:57433 "EHLO mail-pa0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756483Ab3AOV1j (ORCPT ); Tue, 15 Jan 2013 16:27:39 -0500 From: Kent Overstreet To: linux-kernel@vger.kernel.org, linux-bcache@vger.kernel.org Cc: Kent Overstreet , Peter Zijlstra , Ingo Molnar Subject: [PATCH 4/4] Export __lockdep_no_validate__ Date: Tue, 15 Jan 2013 13:25:42 -0800 Message-Id: <1358285142-10576-4-git-send-email-koverstreet@google.com> X-Mailer: git-send-email 1.7.12 In-Reply-To: <1358285142-10576-1-git-send-email-koverstreet@google.com> References: <1358285142-10576-1-git-send-email-koverstreet@google.com> In-Reply-To: <20130114223202.GV26407@google.com> References: <20130114223202.GV26407@google.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hack, but bcache needs a way around lockdep for locking during garbage collection - we need to keep multiple btree nodes locked for coalescing and rw_lock_nested() isn't really sufficient or appropriate here. Signed-off-by: Kent Overstreet CC: Peter Zijlstra CC: Ingo Molnar --- kernel/lockdep.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/lockdep.c b/kernel/lockdep.c index 7981e5b..861fbeb 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -2997,6 +2997,7 @@ void lockdep_init_map(struct lockdep_map *lock, const char *name, EXPORT_SYMBOL_GPL(lockdep_init_map); struct lock_class_key __lockdep_no_validate__; +EXPORT_SYMBOL_GPL(__lockdep_no_validate__); static int print_lock_nested_lock_not_held(struct task_struct *curr, -- 1.7.12