From: Tomas Racek Subject: [PATCH] ext4: Automatic setting of {INODE,BLOCK}_UNINIT flags Date: Thu, 25 Oct 2012 09:25:43 +0200 Message-ID: <1351149943-4827-1-git-send-email-tracek@redhat.com> Cc: lczerner@redhat.com, Tomas Racek To: linux-ext4@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:5307 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757507Ab2JYHZz (ORCPT ); Thu, 25 Oct 2012 03:25:55 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q9P7Ps2T020017 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 25 Oct 2012 03:25:55 -0400 Sender: linux-ext4-owner@vger.kernel.org List-ID: When last inode from bg is freed, set the INODE_UNINIT flag, similarly when last block is freed, set BLOCK_UNINIT flag. This can speed up subsequent fsck run. Signed-off-by: Tomas Racek --- fs/ext4/ialloc.c | 4 ++++ fs/ext4/mballoc.c | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 4facdd2..6e4b982 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -289,6 +289,10 @@ void ext4_free_inode(handle_t *handle, struct inode *inode) count = ext4_free_inodes_count(sb, gdp) + 1; ext4_free_inodes_set(sb, gdp, count); + + if (count == EXT4_INODES_PER_GROUP(sb)) + gdp->bg_flags |= cpu_to_le16(EXT4_BG_INODE_UNINIT); + if (is_directory) { count = ext4_used_dirs_count(sb, gdp) - 1; ext4_used_dirs_set(sb, gdp, count); diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 526e553..28bce35 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4665,6 +4665,10 @@ do_more: ret = ext4_free_group_clusters(sb, gdp) + count_clusters; ext4_free_group_clusters_set(sb, gdp, ret); + + if(ret == EXT4_BLOCKS_PER_GROUP(sb)) + gdp->bg_flags |= cpu_to_le16(EXT4_BG_BLOCK_UNINIT); + ext4_block_bitmap_csum_set(sb, block_group, gdp, bitmap_bh); ext4_group_desc_csum_set(sb, block_group, gdp); ext4_unlock_group(sb, block_group); -- 1.7.11.7