linux-kernel - Re: [PATCH 0/6] power: wire-up filesystem freeze/thaw with suspend/resume

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Message-ID: <20250401-zuhilfenahme-kursbuch-ec2d774d991b@brauner>
Date: Tue, 1 Apr 2025 10:16:09 +0200
From: Christian Brauner <brauner@...nel.org>
To: jack@...e.cz, rafael@...nel.org
Cc: Ard Biesheuvel <ardb@...nel.org>, linux-efi@...r.kernel.org, 
	linux-kernel@...r.kernel.org, James Bottomley <James.Bottomley@...senpartnership.com>, 
	mcgrof@...nel.org, hch@...radead.org, david@...morbit.com, djwong@...nel.org, 
	pavel@...nel.org, peterz@...radead.org, mingo@...hat.com, will@...nel.org, 
	boqun.feng@...il.com, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 0/6] power: wire-up filesystem freeze/thaw with
 suspend/resume

On Tue, Apr 01, 2025 at 02:32:45AM +0200, Christian Brauner wrote:
> The whole shebang can also be found at:
> https://web.git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git/log/?h=work.freeze
> 
> I know nothing about power or hibernation.

I would like to place this behind a Kconfig option and add a
/sys/power/freeze_on_suspend option as these changes are pretty
sensitive and to give userspace the ability to experiment with this for
a while until we remove it. That means we should skip the removal of all
the freezer changes in the filesystems until we're happy enough that
this works reliable enough.