linux-kernel - Re: [PATCH v8 05/10] block: Add core atomic write support

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Date: Wed, 19 Jun 2024 12:07:56 -0400
From: "Martin K. Petersen" <martin.petersen@...cle.com>
To: Christoph Hellwig <hch@....de>
Cc: John Garry <john.g.garry@...cle.com>, Keith Busch <kbusch@...nel.org>,
        axboe@...nel.dk, sagi@...mberg.me, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, viro@...iv.linux.org.uk,
        brauner@...nel.org, dchinner@...hat.com, jack@...e.cz,
        djwong@...nel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-nvme@...ts.infradead.org,
        linux-fsdevel@...r.kernel.org, tytso@....edu, jbongio@...gle.com,
        linux-scsi@...r.kernel.org, ojaswin@...ux.ibm.com, linux-aio@...ck.org,
        linux-btrfs@...r.kernel.org, io-uring@...r.kernel.org,
        nilay@...ux.ibm.com, ritesh.list@...il.com, willy@...radead.org,
        agk@...hat.com, snitzer@...nel.org, mpatocka@...hat.com,
        dm-devel@...ts.linux.dev, hare@...e.de,
        Himanshu Madhani
 <himanshu.madhani@...cle.com>
Subject: Re: [PATCH v8 05/10] block: Add core atomic write support


Christoph,

> I'd be tempted to simply not support the case where NOIOB is not a
> multiple of the atomic write boundary for now and disable atomic
> writes with a big fat warning (and a good comment in the soure code).
> If users show up with a device that hits this and want to use atomic
> writes we can resolved it.

I agree.

-- 
Martin K. Petersen	Oracle Linux Engineering