On Wed, Oct 15, 2014 at 04:14:21PM -0700, Zach Brown wrote:
> btrfs_setup_all_roots() had some copy and pasted code for trying to
> setup a root and then creating a blank node if that failed. The copy
> for the csum_root created the blank node in the extent_root.
The cleanup is good, though I don't see the bug there. Although the passed root
is extent_root in both cases, it's only used to reach the
fs_info->extent_cache:
131 struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
132 u64 bytenr, u32 blocksize)
133 {
134 return alloc_extent_buffer(&root->fs_info->extent_cache, bytenr,
135 blocksize);
136 }
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