linux-kernel - Re: [PATCH] block: reject bs > ps block devices when THP is disabled

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Message-ID: <93888462-4aeb-4cce-bcce-2ffb82db1857@pankajraghav.com>
Date: Fri, 4 Jul 2025 16:05:00 +0200
From: Pankaj Raghav <kernel@...kajraghav.com>
To: Matthew Wilcox <willy@...radead.org>, Pankaj Raghav <p.raghav@...sung.com>
Cc: Hannes Reinecke <hare@...e.de>, mcgrof@...nel.org,
 Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org,
 linux-block@...r.kernel.org, gost.dev@...sung.com, hch@....de,
 Christian Brauner <brauner@...nel.org>
Subject: Re: [PATCH] block: reject bs > ps block devices when THP is disabled

On 7/4/25 14:46, Matthew Wilcox wrote:
> On Fri, Jul 04, 2025 at 11:21:34AM +0200, Pankaj Raghav wrote:
>> As large folio support depends on THP, only allow bs > ps block devices
>> if THP is enabled.
> 
> I mean, it's a quick fix, so sure.  But really we should remove that
> dependency.  Particularly for bs>PS as there's no need for any of the
> splitting code.

Ok, I didn't know that. Let's add this as a stop gap and I will take a look so
that we can remove this dependency.

Thanks.

--
Pankaj