update btrfs-progs for seed device support

This patch does the following:

1) Update device management code to match the kernel code.

2) Allocator fixes.

3) Add a program called btrfstune to set/clear the SEEDING
   super block flags.

1 files changed, 8 insertions, 0 deletions

diff --git a/ctree.c b/ctree.c
index 84ebf2b..0d9797e 100644
--- a/ctree.c
+++ b/ctree.c
@@ -112,6 +112,10 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans,
 	btrfs_set_header_owner(cow, new_root_objectid);
 	btrfs_clear_header_flag(cow, BTRFS_HEADER_FLAG_WRITTEN);
 
+	write_extent_buffer(cow, root->fs_info->fsid,
+			    (unsigned long)btrfs_header_fsid(cow),
+			    BTRFS_FSID_SIZE);
+
 	WARN_ON(btrfs_header_generation(buf) > trans->transid);
 	ret = btrfs_inc_ref(trans, new_root, buf, cow, NULL);
 	kfree(new_root);
@@ -161,6 +165,10 @@ int __btrfs_cow_block(struct btrfs_trans_handle *trans,
 	btrfs_set_header_owner(cow, root->root_key.objectid);
 	btrfs_clear_header_flag(cow, BTRFS_HEADER_FLAG_WRITTEN);
 
+	write_extent_buffer(cow, root->fs_info->fsid,
+			    (unsigned long)btrfs_header_fsid(cow),
+			    BTRFS_FSID_SIZE);
+
 	WARN_ON(btrfs_header_generation(buf) > trans->transid);
 	if (btrfs_header_generation(buf) != trans->transid) {
 		different_trans = 1;