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Message-ID: <17355f27-f631-4bf5-896b-f846f6b05ad8@oracle.com>
Date: Thu, 21 Dec 2023 13:56:04 +0000
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Subject: Re: [PATCH v2 00/16] block atomic writes
To: Christoph Hellwig <hch@lst.de>
Cc: "Darrick J. Wong" <djwong@kernel.org>, axboe@kernel.dk, kbusch@kernel.org,
        sagi@grimberg.me, jejb@linux.ibm.com, martin.petersen@oracle.com,
        viro@zeniv.linux.org.uk, brauner@kernel.org, dchinner@redhat.com,
        jack@suse.cz, linux-block@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
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References: <20231219052121.GA338@lst.de>
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From: John Garry <john.g.garry@oracle.com>
Organization: Oracle Corporation
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On 21/12/2023 13:22, Christoph Hellwig wrote:
> On Thu, Dec 21, 2023 at 01:18:33PM +0000, John Garry wrote:
>>> For SGL-capable devices that would be
>>> BIO_MAX_VECS, otherwise 1.
>>
>> ok, but we would need to advertise that or whatever segment limit. A statx
>> field just for that seems a bit inefficient in terms of space.
> 
> I'd rather not hard code BIO_MAX_VECS in the ABI,

For sure

> which suggest we
> want to export is as a field. 

ok

> Network file systems also might have
> their own limits for one reason or another.

Understood