From mboxrd@z Thu Jan 1 00:00:00 1970 From: Li Zefan Subject: [PATCH 4/6] btrfs: update stats when allocating from a cluster Date: Mon, 23 Aug 2010 09:23:29 +0800 Message-ID: <4C71CD91.4050703@cn.fujitsu.com> References: <4C71CD4B.10606@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Cc: Josef Bacik , linux-btrfs@vger.kernel.org, LKML To: Chris Mason Return-path: In-Reply-To: <4C71CD4B.10606@cn.fujitsu.com> List-ID: 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