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authorLi Zefan <lizf@cn.fujitsu.com>2010-11-09 14:55:34 +0800
committerLi Zefan <lizf@cn.fujitsu.com>2011-01-27 01:04:46 +0800
commit5e71b5d5ec07e4b3fb4c78c4e4b108ff667f123f (patch)
tree4fdb07b18c010f132d10b074bff60226b6517a08 /fs
parent70b7da304f9f9bbf1566085155895e32e775a745 (diff)
downloadop-kernel-dev-5e71b5d5ec07e4b3fb4c78c4e4b108ff667f123f.zip
op-kernel-dev-5e71b5d5ec07e4b3fb4c78c4e4b108ff667f123f.tar.gz
btrfs: Update stats when allocating from a cluster
When allocating extent entry from a cluster, we should update the free_space and free_extents fields of the block group. Reviewed-by: Josef Bacik <josef@redhat.com> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/free-space-cache.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index cb0137e..2974c47 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -1843,15 +1843,26 @@ 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;
}
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