linux-kernel - Re: [PATCH v1 02/11] fs/proc/vmcore: replace vmcoredd_mutex by vmcore

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Message-ID: <9160c6b4-f8a0-431d-8a21-ead510a887a1@redhat.com>
Date: Fri, 15 Nov 2024 11:04:57 +0100
From: David Hildenbrand <david@...hat.com>
To: Baoquan He <bhe@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
 linux-s390@...r.kernel.org, virtualization@...ts.linux.dev,
 kvm@...r.kernel.org, linux-fsdevel@...r.kernel.org,
 kexec@...ts.infradead.org, Heiko Carstens <hca@...ux.ibm.com>,
 Vasily Gorbik <gor@...ux.ibm.com>, Alexander Gordeev
 <agordeev@...ux.ibm.com>, Christian Borntraeger <borntraeger@...ux.ibm.com>,
 Sven Schnelle <svens@...ux.ibm.com>, "Michael S. Tsirkin" <mst@...hat.com>,
 Jason Wang <jasowang@...hat.com>, Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
 Eugenio Pérez <eperezma@...hat.com>,
 Vivek Goyal <vgoyal@...hat.com>, Dave Young <dyoung@...hat.com>,
 Thomas Huth <thuth@...hat.com>, Cornelia Huck <cohuck@...hat.com>,
 Janosch Frank <frankja@...ux.ibm.com>,
 Claudio Imbrenda <imbrenda@...ux.ibm.com>, Eric Farman
 <farman@...ux.ibm.com>, Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v1 02/11] fs/proc/vmcore: replace vmcoredd_mutex by
 vmcore_mutex

On 15.11.24 10:32, Baoquan He wrote:
> On 10/25/24 at 05:11pm, David Hildenbrand wrote:
>> Let's use our new mutex instead.
> 
> Is there reason vmcoredd_mutex need be replaced and integrated with the
> vmcore_mutex? Is it the reason the concurrent opening of vmcore could
> happen with the old vmcoredd_mutex?

Yes, see the next patch in this series. But I consider this valuable on 
its own: there is no need to have two mutexes.

I can make that clearer in the patch description.

-- 
Cheers,

David / dhildenb