Re: [PATCH 1/4] common/rc: Add helper to calculate percetage of free space available

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

"percentage" in the subject line

On Thu, Apr 30, 2026 at 03:13:16PM +0200, Lukas Herbolt wrote:
> It calculates percentage of filesystem available space and returns it
> in MB. This helper will be used in the following test/generic fixes.
> 
> Signed-off-by: Lukas Herbolt <lukas@herbolt.com>
> ---
>  common/rc | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/common/rc b/common/rc
> index 5fe44e2158ff..32c566cdb68a 100644
> --- a/common/rc
> +++ b/common/rc
> @@ -6189,6 +6189,14 @@ _require_fanotify_ioerrors()
>  	_notrun "$FSTYP does not support fanotify ioerrors"
>  }
>  
> +# Returns percentage of available space on given mount point.

“Computes a percentage of the available space in a filesystem and
returns that quantity in MB.  The percentage must not contain a percent
sign ("%").”

> +# usage example:
> +# _mb_pct_of_available_space <mount point> <percents>

s/percents/percent/

--D

> +#
> +_mb_pct_of_available_space()
> +{
> +        _df_device $1 | $AWK_PROG -v pct=$2 '{printf "%.f", (($5*(pct/100))/1024)}'
> +}
>  ################################################################################
>  # make sure this script returns success
>  /bin/true
> -- 
> 2.53.0
> 
>