linux-kernel - Re: [PATCH 0/2] block: null_blk: make fault-injection configurable via configfs

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Date:   Mon, 27 Mar 2023 15:13:24 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Akinobu Mita <akinobu.mita@...il.com>
Cc:     linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        akpm@...ux-foundation.org, axboe@...nel.dk
Subject: Re: [PATCH 0/2] block: null_blk: make fault-injection configurable
 via configfs

On Mon, Mar 27, 2023 at 11:37:31PM +0900, Akinobu Mita wrote:
> This patch set makes null_blk driver-specific fault-injection dynamically
> configurable per device via configfs.
> 
> Since the null_blk driver supports configuration such as device creation
> via configfs, it is natural to configure fault-injection via configfs as
> well.
> 
> Currently, only the debugfs interface is provided for dynamically
> configuring fault-injection, so this introduces a compatible interface via
> configfs.

Oh, nice.  Can you also update blktests to take advantage of this and
not require built-in null_blk for fault injection tests?