Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752578Ab0HWBSh (ORCPT ); Sun, 22 Aug 2010 21:18:37 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:58790 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751523Ab0HWBSf (ORCPT ); Sun, 22 Aug 2010 21:18:35 -0400 Message-ID: <4C71CD91.4050703@cn.fujitsu.com> Date: Mon, 23 Aug 2010 09:23:29 +0800 From: Li Zefan User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b3pre) Gecko/20090513 Fedora/3.0-2.3.beta2.fc11 Thunderbird/3.0b2 MIME-Version: 1.0 To: Chris Mason CC: Josef Bacik , linux-btrfs@vger.kernel.org, LKML Subject: [PATCH 4/6] btrfs: update stats when allocating from a cluster References: <4C71CD4B.10606@cn.fujitsu.com> In-Reply-To: <4C71CD4B.10606@cn.fujitsu.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1286 Lines: 50 When allocating extent entry from a cluster, we should update the free_space and free_extents fields of the block group. Signed-off-by: Li Zefan --- fs/btrfs/free-space-cache.c | 17 ++++++++++++++--- 1 files changed, 14 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 631e14f..20f3141 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -1090,15 +1090,26 @@ u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group, entry->offset += bytes; entry->bytes -= bytes; - if (entry->bytes == 0) { + if (entry->bytes == 0) rb_erase(&entry->offset_index, &cluster->root); - kfree(entry); - } break; } out: spin_unlock(&cluster->lock); + if (!ret) + return 0; + + spin_lock(&block_group->tree_lock); + + block_group->free_space -= bytes; + if (entry->bytes == 0) { + block_group->free_extents--; + kfree(entry); + } + + spin_unlock(&block_group->tree_lock); + return ret; } -- 1.7.0.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/