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 <lizf@xxxxxxxxxxxxxx>
---
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
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