linux-kernel - Re: [PATCH AUTOSEL 6.13 22/28] um: Switch to the pthread-based helper in sigio workaround

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Message-ID: <d9125f9e-4ec2-40aa-b186-798f53bcd2c6@antgroup.com>
Date: Tue, 08 Apr 2025 12:37:40 +0800
From: "Tiwei Bie" <tiwei.btw@...group.com>
To: Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
 stable@...r.kernel.org
Cc: Johannes Berg <johannes.berg@...el.com>, richard@....at,
 anton.ivanov@...bridgegreys.com, johannes@...solutions.net,
 linux-um@...ts.infradead.org
Subject: Re: [PATCH AUTOSEL 6.13 22/28] um: Switch to the pthread-based helper
 in sigio workaround

On 2025/4/8 02:12, Sasha Levin wrote:
> From: Tiwei Bie <tiwei.btw@...group.com>
> 
> [ Upstream commit d295beeed2552a987796d627ba7d0985b1e2d72f ]
> 
> The write_sigio thread and UML kernel thread share the same errno,
> which can lead to conflicts when both call syscalls concurrently.
> Switch to the pthread-based helper to address this issue.
> 
> Signed-off-by: Tiwei Bie <tiwei.btw@...group.com>
> Link: https://patch.msgid.link/20250319135523.97050-4-tiwei.btw@antgroup.com
> Signed-off-by: Johannes Berg <johannes.berg@...el.com>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
>  arch/um/os-Linux/sigio.c | 44 +++++++++++++++++-----------------------
>  1 file changed, 19 insertions(+), 25 deletions(-)

Please drop this patch. Thanks! Details can be found here: 

https://lore.kernel.org/linux-um/ffa0b6af-523d-4e3e-9952-92f5b04b82b3@antgroup.com/

Regards,
Tiwei