From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Aneesh Kumar K.V" Subject: [RFC PATCH -v2 9/9] ext4: Fix lockdep recursive locking warning Date: Mon, 3 Nov 2008 23:06:09 +0530 Message-ID: <1225733769-23734-9-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1225733769-23734-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> <1225733769-23734-2-git-send-email-aneesh.kumar@linux.vnet.ibm.com> <1225733769-23734-3-git-send-email-aneesh.kumar@linux.vnet.ibm.com> <1225733769-23734-4-git-send-email-aneesh.kumar@linux.vnet.ibm.com> <1225733769-23734-5-git-send-email-aneesh.kumar@linux.vnet.ibm.com> <1225733769-23734-6-git-send-email-aneesh.kumar@linux.vnet.ibm.com> <1225733769-23734-7-git-send-email-aneesh.kumar@linux.vnet.ibm.com> <1225733769-23734-8-git-send-email-aneesh.kumar@linux.vnet.ibm.com> Cc: linux-ext4@vger.kernel.org, "Aneesh Kumar K.V" To: cmm@us.ibm.com, tytso@mit.edu, sandeen@redhat.com Return-path: Received: from E23SMTP04.au.ibm.com ([202.81.18.173]:52881 "EHLO e23smtp04.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751618AbYKCRgs (ORCPT ); Mon, 3 Nov 2008 12:36:48 -0500 Received: from sd0109e.au.ibm.com (d23rh905.au.ibm.com [202.81.18.225]) by e23smtp04.au.ibm.com (8.13.1/8.13.1) with ESMTP id mA3HZO6F019013 for ; Tue, 4 Nov 2008 04:35:24 +1100 Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by sd0109e.au.ibm.com (8.13.8/8.13.8/NCO v9.1) with ESMTP id mA3HakiZ283244 for ; Tue, 4 Nov 2008 04:36:46 +1100 Received: from d23av03.au.ibm.com (loopback [127.0.0.1]) by d23av03.au.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id mA3Haj29014094 for ; Tue, 4 Nov 2008 04:36:46 +1100 In-Reply-To: <1225733769-23734-8-git-send-email-aneesh.kumar@linux.vnet.ibm.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: Indicate that the group locks can be taken in loop. Signed-off-by: Aneesh Kumar K.V --- fs/ext4/mballoc.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index c169256..5a5f9e1 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -2418,6 +2418,7 @@ ext4_mb_store_history(struct ext4_allocation_context *ac) #define ext4_mb_history_init(sb) #endif +static struct lock_class_key alloc_sem_key[NR_BG_LOCKS]; /* Create and initialize ext4_group_info data for the given group. */ int ext4_mb_add_groupinfo(struct super_block *sb, ext4_group_t group, @@ -2478,7 +2479,9 @@ int ext4_mb_add_groupinfo(struct super_block *sb, ext4_group_t group, } INIT_LIST_HEAD(&meta_group_info[i]->bb_prealloc_list); - init_rwsem(&meta_group_info[i]->alloc_sem); + __init_rwsem(&meta_group_info[i]->alloc_sem, + "&meta_group_info[i]->alloc_sem", + &alloc_sem_key[i]); meta_group_info[i]->bb_free_root.rb_node = NULL;; #ifdef DOUBLE_CHECK -- 1.6.0.3.514.g2f91b