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btrfs: Free fully occupied bitmap in cluster
author
Li Zefan
<lizf@cn.fujitsu.com>
Tue, 9 Nov 2010 06:51:45 +0000
(14:51 +0800)
committer
Li Zefan
<lizf@cn.fujitsu.com>
Wed, 26 Jan 2011 17:04:41 +0000
(
01:04
+0800)
If there's no more free space in a bitmap, we should free it.
Reviewed-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
fs/btrfs/free-space-cache.c
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diff --git
a/fs/btrfs/free-space-cache.c
b/fs/btrfs/free-space-cache.c
index
850104f
..
cb0137e
100644
(file)
--- a/
fs/btrfs/free-space-cache.c
+++ b/
fs/btrfs/free-space-cache.c
@@
-1788,6
+1788,8
@@
static u64 btrfs_alloc_from_bitmap(struct btrfs_block_group_cache *block_group,
ret = search_start;
bitmap_clear_bits(block_group, entry, ret, bytes);
+ if (entry->bytes == 0)
+ free_bitmap(block_group, entry);
out:
spin_unlock(&cluster->lock);
spin_unlock(&block_group->tree_lock);