Btrfs: Allow tree blocks larger than the page size
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 55289b7..60f6134 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -205,12 +205,13 @@
btrfs_write_dirty_block_groups(trans, extent_root);
while(1) {
- old_extent_block = btrfs_root_blocknr(&extent_root->root_item);
- if (old_extent_block ==
- extent_buffer_blocknr(extent_root->node))
+ old_extent_block = btrfs_root_bytenr(&extent_root->root_item);
+ if (old_extent_block == extent_root->node->start)
break;
- btrfs_set_root_blocknr(&extent_root->root_item,
- extent_buffer_blocknr(extent_root->node));
+ btrfs_set_root_bytenr(&extent_root->root_item,
+ extent_root->node->start);
+ btrfs_set_root_level(&extent_root->root_item,
+ btrfs_header_level(extent_root->node));
ret = btrfs_update_root(trans, tree_root,
&extent_root->root_key,
&extent_root->root_item);
@@ -284,8 +285,8 @@
(unsigned long)root->root_key.objectid,
BTRFS_ROOT_TRANS_TAG);
if (root->commit_root == root->node) {
- WARN_ON(extent_buffer_blocknr(root->node) !=
- btrfs_root_blocknr(&root->root_item));
+ WARN_ON(root->node->start !=
+ btrfs_root_bytenr(&root->root_item));
free_extent_buffer(root->commit_root);
root->commit_root = NULL;
@@ -314,8 +315,10 @@
root->commit_root = NULL;
root->root_key.offset = root->fs_info->generation;
- btrfs_set_root_blocknr(&root->root_item,
- extent_buffer_blocknr(root->node));
+ btrfs_set_root_bytenr(&root->root_item,
+ root->node->start);
+ btrfs_set_root_level(&root->root_item,
+ btrfs_header_level(root->node));
err = btrfs_insert_root(trans, root->fs_info->tree_root,
&root->root_key,
&root->root_item);
@@ -407,8 +410,8 @@
struct dirty_root *dirty;
struct btrfs_trans_handle *trans;
unsigned long nr;
- u64 num_blocks;
- u64 blocks_used;
+ u64 num_bytes;
+ u64 bytes_used;
int ret = 0;
int err;
@@ -419,7 +422,7 @@
dirty = list_entry(list->next, struct dirty_root, list);
list_del_init(&dirty->list);
- num_blocks = btrfs_root_used(&dirty->root->root_item);
+ num_bytes = btrfs_root_used(&dirty->root->root_item);
root = dirty->latest_root;
while(1) {
@@ -446,12 +449,12 @@
}
BUG_ON(ret);
- num_blocks -= btrfs_root_used(&dirty->root->root_item);
- blocks_used = btrfs_root_used(&root->root_item);
- if (num_blocks) {
+ num_bytes -= btrfs_root_used(&dirty->root->root_item);
+ bytes_used = btrfs_root_used(&root->root_item);
+ if (num_bytes) {
record_root_in_trans(root);
btrfs_set_root_used(&root->root_item,
- blocks_used - num_blocks);
+ bytes_used - num_bytes);
}
ret = btrfs_del_root(trans, tree_root, &dirty->root->root_key);
if (ret) {
@@ -560,7 +563,9 @@
btrfs_set_super_generation(&root->fs_info->super_copy,
cur_trans->transid);
btrfs_set_super_root(&root->fs_info->super_copy,
- extent_buffer_blocknr(root->fs_info->tree_root->node));
+ root->fs_info->tree_root->node->start);
+ btrfs_set_super_root_level(&root->fs_info->super_copy,
+ btrfs_header_level(root->fs_info->tree_root->node));
write_extent_buffer(root->fs_info->sb_buffer,
&root->fs_info->super_copy, 0,