Re: [PATCH] generic/800: TEST_DIR, not TEST_MNT

[Zorro Lang <zlang@kernel.org>]

On Wed, Aug 19, 2026 at 08:27:26AM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@kernel.org>
> 
> Fix this new test regression:
> 
>  --- /run/fstests/bin/tests/generic/800.out	2026-08-18 09:30:13.655513087 -0700
>  +++ /run/fstests/logs/generic/800.out.bad	2026-08-18 16:30:24.107110215 -0700
>  @@ -1,2 +1,4 @@
>   QA output created by 800
>  +/dio-read-source: Read-only file system

Thanks for catching this! My rootfs wasn't configured as read-only, so
I completely missed it.

Reviewed-by: Zorro Lang <zlang@kernel.org>

>  +dio read failed
>   Silence is golden
>
> Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
> ---
>  tests/generic/800 |    6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/tests/generic/800 b/tests/generic/800
> index 52a664a17e448b..b79c1a0c052876 100755
> --- a/tests/generic/800
> +++ b/tests/generic/800
> @@ -32,8 +32,8 @@ _cleanup()
>  _scratch_mkfs >> $seqres.full
>  _scratch_mount
>  
> -# Create the 4MiB target file on TEST_MNT as the read source.
> -$XFS_IO_PROG -f -c "pwrite -i /dev/urandom 0 4M" "$TEST_MNT/dio-read-source" >> $seqres.full
> +# Create the 4MiB target file on TEST_DIR as the read source.
> +$XFS_IO_PROG -f -c "pwrite -i /dev/urandom 0 4M" "$TEST_DIR/dio-read-source" >> $seqres.full
>  
>  # Another 4MiB target file on SCRATCH_MNT as the mmap dest
>  $XFS_IO_PROG -f -c "pwrite 0 4M" "$SCRATCH_MNT/mmap-dest" >> $seqres.full
> @@ -42,7 +42,7 @@ read_workload()
>  {
>  	_register_cleanup "wait"
>  	while true; do
> -		$here/src/dio-read-into-mmap "$TEST_MNT/dio-read-source" \
> +		$here/src/dio-read-into-mmap "$TEST_DIR/dio-read-source" \
>  			"$SCRATCH_MNT/mmap-dest" &> /dev/null
>  		if [ $? -ne 0 ]; then
>  			echo "dio read failed"