BTRFS_MAX_ITEM_SIZE
return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item);
fs_info->csums_per_leaf = BTRFS_MAX_ITEM_SIZE(fs_info) / fs_info->csum_size;
return BTRFS_MAX_ITEM_SIZE(info) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
fs_info->csums_per_leaf = BTRFS_MAX_ITEM_SIZE(fs_info) /
#define BTRFS_MAX_DEVS(info) ((BTRFS_MAX_ITEM_SIZE(info) \