From: Eric Sandeen Subject: [PATCH] ext4: recalculate s_blockfile_groups during resize2fs Date: Fri, 03 May 2013 16:06:56 -0500 Message-ID: <518426F0.1000103@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Lachlan McIlroy To: ext4 development Return-path: Received: from mx1.redhat.com ([209.132.183.28]:54788 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750729Ab3ECVG5 (ORCPT ); Fri, 3 May 2013 17:06:57 -0400 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r43L6vpo021247 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 3 May 2013 17:06:57 -0400 Sender: linux-ext4-owner@vger.kernel.org List-ID: s_blockfile_groups is used to limit allocations for non-extent files to block groups with block numbers less than 2^32. However, it's not updated when the filesystem is resized online, so the new groups are unavailable to non-extent files until a remount. Fix this by updating the value in ext4_update_super() at resize time. Signed-off-by: Eric Sandeen --- diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index c169477..1357260 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -1341,6 +1341,8 @@ static void ext4_update_super(struct super_block *sb, /* Update the global fs size fields */ sbi->s_groups_count += flex_gd->count; + sbi->s_blockfile_groups = min_t(ext4_group_t, sbi->s_groups_count, + (EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP(sb))); /* Update the reserved block counts only once the new group is * active. */