Demi Marie Obenour <demiobenour@gmail.com> writes:

> Don't call it if the target directory already exists.
>
> Signed-off-by: Demi Marie Obenour <demiobenour@gmail.com>
> ---
>  scripts/make-erofs.sh | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/scripts/make-erofs.sh b/scripts/make-erofs.sh
> index 93cb3245f409b24c24be05e9307a1b2e12c867fe..66abd1f388524c19cd3a1113415892d0d72e3f82 100755
> --- a/scripts/make-erofs.sh
> +++ b/scripts/make-erofs.sh
> @@ -86,12 +86,12 @@ while read -r arg1; do
>  		# Create the parent directory if it doesn't already
>  		# exist.
>  		parent=${arg2%/*}
> +		if [ ! -d "$root/$parent" ]; then
> +			mkdir -p -- "$root/$parent"
> +		fi
>  		;;
> -	(*)
> -		parent=.
> -		;;
> +	(*) :;; # parent $root which definitely exists
>  	esac
> -	mkdir -p -- "$root/$parent"
>  	cp -RT -- "$arg1" "$root/$arg2"
>  done

Is there a non-negligible speed increase?