the tree log recover code expects no free space cached before it executes.
Signed-off-by: Yan Zheng <zheng....@oracle.com>
---
diff -urp 4/fs/btrfs/extent-tree.c 8/fs/btrfs/extent-tree.c
--- 4/fs/btrfs/extent-tree.c 2010-05-11 14:15:29.174108554 +0800
+++ 8/fs/btrfs/extent-tree.c 2010-05-11 13:26:38.036107000 +0800
@@ -316,11 +329,6 @@ static int caching_kthread(void *data)
if (!path)
return -ENOMEM;
- exclude_super_stripes(extent_root, block_group);
- spin_lock(&block_group->space_info->lock);
- block_group->space_info->bytes_super += block_group->bytes_super;
- spin_unlock(&block_group->space_info->lock);
-
last = max_t(u64, block_group->key.objectid, BTRFS_SUPER_INFO_OFFSET);
/*
@@ -7499,6 +7541,7 @@ int btrfs_free_block_groups(struct btrfs
if (block_group->cached == BTRFS_CACHE_STARTED)
wait_block_group_cache_done(block_group);
+ free_excluded_extents(info->extent_root, block_group);
btrfs_remove_free_space_cache(block_group);
btrfs_put_block_group(block_group);
@@ -7586,26 +7629,12 @@ int btrfs_read_block_groups(struct btrfs
cache->flags = btrfs_block_group_flags(&cache->item);
cache->sectorsize = root->sectorsize;
- /*
- * check for two cases, either we are full, and therefore
- * don't need to bother with the caching work since we won't
- * find any space, or we are empty, and we can just add all
- * the space in and be done with it. This saves us _alot_ of
- * time, particularly in the full case.
- */
- if (found_key.offset == btrfs_block_group_used(&cache->item)) {
- exclude_super_stripes(root, cache);
- cache->last_byte_to_unpin = (u64)-1;
- cache->cached = BTRFS_CACHE_FINISHED;
- free_excluded_extents(root, cache);
- } else if (btrfs_block_group_used(&cache->item) == 0) {
- exclude_super_stripes(root, cache);
+ exclude_super_stripes(root, cache);
+ /* check for the case that block group is full */
+ if (found_key.offset == cache->bytes_super +
+ btrfs_block_group_used(&cache->item)) {
cache->last_byte_to_unpin = (u64)-1;
cache->cached = BTRFS_CACHE_FINISHED;
- add_new_free_space(cache, root->fs_info,
- found_key.objectid,
- found_key.objectid +
- found_key.offset);
free_excluded_extents(root, cache);
}
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