Btrfs: create UUID tree if required
This tree is not created by mkfs.btrfs. Therefore when a filesystem
is mounted writable and the UUID tree does not exist, this tree is
created if required. The tree is also added to the fs_info structure
and initialized, but this commit does not yet read or write UUID tree
elements.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index f1c1694..8cb1d41 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4361,6 +4361,9 @@
if (root == root->fs_info->csum_root && trans->adding_csums)
block_rsv = trans->block_rsv;
+ if (root == root->fs_info->uuid_root)
+ block_rsv = trans->block_rsv;
+
if (!block_rsv)
block_rsv = root->block_rsv;
