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btrfs-progs: init new tree blocks in btrfs_alloc_tree_block

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This is how the kernel initializes blocks, so anybody who uses
btrfs_alloc_tree_block in the kernel expects the blocks to be already
initialized.  Put this init code into btrfs-progs so as we sync code
from the kernel we get the correct behavior.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2023-08-23 10:32:49 -04:00 committed by David Sterba
parent f858c8b191
commit e3f227c6c6
1 changed files with 9 additions and 0 deletions
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9
kernel-shared/extent-tree.c
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@ -2558,6 +2558,7 @@ struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
u64 hint, u64 empty_size,
enum btrfs_lock_nesting nest)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
struct btrfs_key ins;
int ret;
struct extent_buffer *buf;
@ -2578,6 +2579,14 @@ struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
return ERR_PTR(-ENOMEM);
}
btrfs_set_buffer_uptodate(buf);
memset_extent_buffer(buf, 0, 0, sizeof(struct btrfs_header));
btrfs_set_header_level(buf, level);
btrfs_set_header_bytenr(buf, buf->start);
btrfs_set_header_generation(buf, trans->transid);
btrfs_set_header_backref_rev(buf, BTRFS_MIXED_BACKREF_REV);
btrfs_set_header_owner(buf, root_objectid);
write_extent_buffer_fsid(buf, fs_info->fs_devices->metadata_uuid);
write_extent_buffer_chunk_tree_uuid(buf, fs_info->chunk_tree_uuid);
trans->blocks_used++;
return buf;