linux-kernel - Re: [RESEND PATCH] dm-ebs: Mark full buffer dirty even on partial write

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Message-ID: <20251121072508.GB29754@lst.de>
Date: Fri, 21 Nov 2025 08:25:08 +0100
From: Christoph Hellwig <hch@....de>
To: Uladzislau Rezki <urezki@...il.com>
Cc: Christoph Hellwig <hch@....de>, Mikulas Patocka <mpatocka@...hat.com>,
	Benjamin Marzinski <bmarzins@...hat.com>,
	Alasdair Kergon <agk@...hat.com>, DMML <dm-devel@...ts.linux.dev>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mike Snitzer <snitzer@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RESEND PATCH] dm-ebs: Mark full buffer dirty even on partial
 write

On Thu, Nov 20, 2025 at 01:40:32PM +0100, Uladzislau Rezki wrote:
> Christoph, but i assume it is valid case: logical=512B, physical=8192K.
> Could you please confirm?

That is a valid configuration.  One that must accept I/O at 512 byte
granularity.