linux-ext4 - Re: [PATCH 01/13] dmflakey: override SCRATCH_DEV in _init

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Message-ID: <3286164e-71b5-4111-8c63-c6f9856a9dd7@gmail.com>
Date: Fri, 19 Dec 2025 05:27:40 +0800
From: Anand Jain <anajain.sg@...il.com>
To: Christoph Hellwig <hch@....de>, Zorro Lang <zlang@...nel.org>
Cc: Anand Jain <asj@...nel.org>, Filipe Manana <fdmanana@...e.com>,
 "Darrick J. Wong" <djwong@...nel.org>, fstests@...r.kernel.org,
 linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org
Subject: Re: [PATCH 01/13] dmflakey: override SCRATCH_DEV in _init_flakey

On 18/12/25 15:29, Christoph Hellwig wrote:
> _init_flakey already overrides SCRATCH_LOGDEV and SCRATCH_RTDEV so that
> the XFS-specific helpers work fine with external devices.  Do the same
> for SCRATCH_DEV itself, so that _scratch_mount and _scratch_unmount just
> work, and so that _check_scratch_fs does not need to override the main
> device.
> 
> This requires some small adjustments in how generic/741 checks that
> mounting the underlying device fails, but the new version actually is
> simpler than the old one, and in xfs/438 where we need to be careful
> where to create the custom dm table.
> 

Reviewed-by: Anand Jain <asj@...nel.org>

> Signed-off-by: Christoph Hellwig <hch@....de>