linux-kernel - Re: [RFC PATCH 2/4] mm: Change the interface for __tlb_remove

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Message-ID: <004f01d1bb0d$c4537db0$4cfa7910$@alibaba-inc.com>
Date:	Tue, 31 May 2016 15:26:36 +0800
From:	"Hillf Danton" <hillf.zj@...baba-inc.com>
To:	"'Aneesh Kumar K.V'" <aneesh.kumar@...ux.vnet.ibm.com>
Cc:	"'linux-kernel'" <linux-kernel@...r.kernel.org>,
	<linux-mm@...ck.org>
Subject: Re: [RFC PATCH 2/4] mm: Change the interface for __tlb_remove_page

> > Do you want to update ->addr here?
> >
> 
> I don't get that question. We wanted to track the alst adjusted addr in
> tlb->addr because when we do a tlb_flush_mmu_tlbonly() we does a
> __tlb_reset_range(), which clears tlb->start and tlb->end. Now we need
> to update the range again with the last adjusted addr before we can call
> __tlb_remove_page(). Look for VM_BUG_ON(!tlb->end); in
> __tlb_remove_page().
> 
Got, thanks.

Hillf