linux-ext4 - Re: [PATCHv4 2/8] block: add size alignment to bio_iov_iter_get

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Message-ID: <yq1jz2kgw77.fsf@ca-mkp.ca.oracle.com>
Date: Sat, 30 Aug 2025 20:40:40 -0400
From: "Martin K. Petersen" <martin.petersen@...cle.com>
To: Keith Busch <kbusch@...a.com>
Cc: <linux-block@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>,
        <linux-xfs@...r.kernel.org>, <linux-ext4@...r.kernel.org>,
        <hch@....de>, <axboe@...nel.dk>, Keith Busch <kbusch@...nel.org>
Subject: Re: [PATCHv4 2/8] block: add size alignment to bio_iov_iter_get_pages


Keith,

> The block layer tries to align bio vectors to the block device's
> logical block size. Some cases don't have a block device, or we may
> need to align to something larger, which we can't derive it from the
> queue limits. Have the caller specify what they want, or allow any
> length alignment if nothing was specified. Since the most common use
> case relies on the block device's limits, a helper function is
> provided.

Reviewed-by: Martin K. Petersen <martin.petersen@...cle.com>

-- 
Martin K. Petersen