linux-kernel - Re: [PATCH 0/2] KVM: async_pf: use_mm/mm

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Message-ID: <535E361D.3050902@redhat.com>
Date:	Mon, 28 Apr 2014 13:06:05 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Oleg Nesterov <oleg@...hat.com>, Avi Kivity <avi.kivity@...il.com>,
	Gleb Natapov <gleb@...nel.org>
CC:	Dominik Dingel <dingel@...ux.vnet.ibm.com>,
	Christian Borntraeger <borntraeger@...ibm.com>,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Andrea Arcangeli <aarcange@...hat.com>
Subject: Re: [PATCH 0/2] KVM: async_pf: use_mm/mm_users fixes

Il 21/04/2014 15:25, Oleg Nesterov ha scritto:
> Hello.
>
> Completely untested and I know nothing about kvm ;) Please review.
>
> But use_mm() really looks misleading, and the usage of mm_users looks
> "obviously wrong". I already sent this change while we were discussing
> vmacache, but it was ignored. Since then kvm_async_page_present_sync()
> was added into async_pf_execute() into async_pf_execute(), but it seems
> to me that use_mm() is still unnecessary.
>
> Oleg.
>
>  virt/kvm/async_pf.c |   10 ++++------
>  1 files changed, 4 insertions(+), 6 deletions(-)
>

Applying patch 2 to kvm/master (for 3.15).

Patch 1 will be for 3.16 only, I'd like a review from Marcelo or Andrea 
though (that's "KVM: async_pf: kill the unnecessary use_mm/unuse_mm 
async_pf_execute()" for easier googling).

Paolo
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