From: =?ISO-8859-1?Q?Fr=E9d=E9ric_Boh=E9?= Subject: [PATCH] ext4: update flex bg counters when resizing Date: Mon, 01 Sep 2008 16:02:18 +0200 Message-ID: <1220277738.3569.10.camel@frecb007923.frec.bull.fr> References: <1219934280.3591.121.camel@frecb007923.frec.bull.fr> <20080828171156.GK26987@mit.edu> <20080828173652.GL26987@mit.edu> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit To: Theodore Tso , "; linux-ext4" Return-path: Received: from ecfrec.frec.bull.fr ([129.183.4.8]:59494 "EHLO ecfrec.frec.bull.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751052AbYIAMAQ (ORCPT ); Mon, 1 Sep 2008 08:00:16 -0400 In-Reply-To: <20080828173652.GL26987@mit.edu> Sender: linux-ext4-owner@vger.kernel.org List-ID: From: Frederic Bohe Update flex_bg free blocks and free inodes counters when resizing. Signed-off-by: Frederic Bohe --- This patch fixes a bug which prevents to use the newly created inodes after a resize with flex bg. I am not sure if it is really usefull to update free blocks too, but it is definitely cleaner code. resize.c | 9 +++++++++ super.c | 7 +++++-- 2 files changed, 14 insertions(+), 2 deletions(-) Index: linux-2.6.27-rc5+patch_queue/fs/ext4/resize.c =================================================================== --- linux-2.6.27-rc5+patch_queue.orig/fs/ext4/resize.c 2008-09-01 11:23:09.000000000 +0200 +++ linux-2.6.27-rc5+patch_queue/fs/ext4/resize.c 2008-09-01 13:16:03.000000000 +0200 @@ -929,6 +929,15 @@ int ext4_group_add(struct super_block *s percpu_counter_add(&sbi->s_freeinodes_counter, EXT4_INODES_PER_GROUP(sb)); + if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG)) { + ext4_group_t flex_group; + flex_group = ext4_flex_group(sbi, input->group); + sbi->s_flex_groups[flex_group].free_blocks += + input->free_blocks_count; + sbi->s_flex_groups[flex_group].free_inodes += + EXT4_INODES_PER_GROUP(sb); + } + ext4_journal_dirty_metadata(handle, sbi->s_sbh); sb->s_dirt = 1; Index: linux-2.6.27-rc5+patch_queue/fs/ext4/super.c =================================================================== --- linux-2.6.27-rc5+patch_queue.orig/fs/ext4/super.c 2008-09-01 12:38:03.000000000 +0200 +++ linux-2.6.27-rc5+patch_queue/fs/ext4/super.c 2008-09-01 13:29:39.000000000 +0200 @@ -1507,8 +1507,11 @@ static int ext4_fill_flex_info(struct su sbi->s_log_groups_per_flex = sbi->s_es->s_log_groups_per_flex; groups_per_flex = 1 << sbi->s_log_groups_per_flex; - flex_group_count = (sbi->s_groups_count + groups_per_flex - 1) / - groups_per_flex; + /* We allocate both existing and potentially added groups */ + flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) + + ((sbi->s_es->s_reserved_gdt_blocks +1 ) << + EXT4_DESC_PER_BLOCK_BITS(sb))) / + groups_per_flex; sbi->s_flex_groups = kzalloc(flex_group_count * sizeof(struct flex_groups), GFP_KERNEL); if (sbi->s_flex_groups == NULL) { --