Re: [PATCH 2/4] common/xfs: helper function to check if -l/-d/-r concurrecy flags.

["Darrick J. Wong" <djwong@kernel.org>]

On Thu, Apr 30, 2026 at 03:13:18PM +0200, Lukas Herbolt wrote:
> Check if the requested flag is supported by the mkfs.xfs on scratch
> device.
> 
> Signed-off-by: Lukas Herbolt <lukas@herbolt.com>
> ---
>  common/xfs | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/common/xfs b/common/xfs
> index f7a6d2f2f03a..12cf6c273c53 100644
> --- a/common/xfs
> +++ b/common/xfs
> @@ -2399,3 +2399,9 @@ _require_xfs_healer()
>  	_xfs_healer --supported "$@" &>/dev/null || \
>  		_notrun "health monitoring not supported on this kernel"
>  }
> +
> +# Check if -l/-d/-r concurrency is supported.
> +_scratch_mkfs_supports_concurrency()

This is specific to xfs, so I think the name should reflect that.

_scratch_mkfs_xfs_supports_concurrency

> +{
> +        _scratch_mkfs_xfs_supported $1 concurrency=0
> +}

As I noted downthread, -d and -l gained their concurrency= options in
the same release so we probably ought to do future fstests authors a
favor and note that in the comments or just do something dorky like:

_scratch_mkfs_xfs_supports_concurrency()
{
	local arg="${1:-d}"

	# -d and -l gained concurrency options at the same time
	test "$arg" = "-l" && arg="-d"

	_scratch_mkfs_xfs_supported "$arg" concurrency=0
}

--D

> -- 
> 2.53.0
> 
>