btrfs: Introduce unaccount_log_buffer

#include "compression.h"

#include "qgroup.h"

#include "inode-map.h"

#include "block-group.h"

#include "space-info.h"

/* magic values for the inode_only field in btrfs_log_inode:

 *

	return ret;

}

/*

 * Correctly adjust the reserved bytes occupied by a log tree extent buffer

 */

static void unaccount_log_buffer(struct btrfs_fs_info *fs_info, u64 start)

{

	struct btrfs_block_group *cache;

	cache = btrfs_lookup_block_group(fs_info, start);

	if (!cache) {

		btrfs_err(fs_info, "unable to find block group for %llu", start);

		return;

	}

	spin_lock(&cache->space_info->lock);

	spin_lock(&cache->lock);

	cache->reserved -= fs_info->nodesize;

	cache->space_info->bytes_reserved -= fs_info->nodesize;

	spin_unlock(&cache->lock);

	spin_unlock(&cache->space_info->lock);

	btrfs_put_block_group(cache);

}

static noinline int walk_down_log_tree(struct btrfs_trans_handle *trans,

				   struct btrfs_root *root,

				   struct btrfs_path *path, int *level,