linux-kernel - Re: [PATCH v2] Revert "sunvdc: Do not spin in an infinite loop when vio_ldc

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Message-ID: <b3f942fc09c3e233a0af624063ccc9e07e63d204.camel@physik.fu-berlin.de>
Date: Mon, 06 Oct 2025 15:03:01 +0200
From: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To: Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Cc: Andreas Larsson <andreas@...sler.com>, Anthony Yznaga	
 <anthony.yznaga@...cle.com>, Sam James <sam@...too.org>, "David S . Miller"
	 <davem@...emloft.net>, Michael Karcher
 <kernel@...rcher.dialup.fu-berlin.de>, 	sparclinux@...r.kernel.org
Subject: Re: [PATCH v2] Revert "sunvdc: Do not spin in an infinite loop when
 vio_ldc_send() returns EAGAIN"

On Mon, 2025-10-06 at 15:00 +0200, John Paul Adrian Glaubitz wrote:
> The problem is that giving up can lead to filesystem corruption which
> is problem that was never observed before the change from what I know.
> 
> We have deployed a kernel with the change reverted on several LDOMs that
> are seeing heavy use such as cfarm202.cfarm.net and we have seen any system
> lock ups or similar.

We have not* seen any lock ups, so far with the patch reverted. Sorry.

> 
-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
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