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btrfs: Update stats when allocating from a cluster

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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>
This commit is contained in:
Li Zefan 2010-11-09 14:55:34 +08:00
parent 70b7da304f
commit 5e71b5d5ec
1 changed files with 14 additions and 3 deletions
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17
fs/btrfs/free-space-cache.c
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@ -1843,15 +1843,26 @@ u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group,
entry->offset += bytes; entry->offset += bytes;
entry->bytes -= bytes; entry->bytes -= bytes;
if (entry->bytes == 0) { if (entry->bytes == 0)
rb_erase(&entry->offset_index, &cluster->root); rb_erase(&entry->offset_index, &cluster->root);
kfree(entry);
}
break; break;
} }
out: out:
spin_unlock(&cluster->lock); 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; return ret;
} }