linux-kernel - Re: [PATCH 1/2] mm: rename mm->nr_ptes to mm->nr

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Message-ID: <20150114144843.GE2253@moon>
Date:	Wed, 14 Jan 2015 17:48:43 +0300
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	"Kirill A. Shutemov" <kirill@...temov.name>
Cc:	Dave Hansen <dave.hansen@...ux.intel.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>, linux-mm@...ck.org,
	Pavel Emelyanov <xemul@...nvz.org>,
	linux-kernel@...r.kernel.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [PATCH 1/2] mm: rename mm->nr_ptes to mm->nr_pgtables

On Wed, Jan 14, 2015 at 04:33:58PM +0200, Kirill A. Shutemov wrote:
> > 
> > It looks like this doesn't matter. The statistics here prints the size
> > of summary memory occupied for pte_t entries, here PTRS_PER_PTE * sizeof(pte_t)
> > is only valid for, once we start accounting pmd into same counter it implies
> > that PTRS_PER_PTE == PTRS_PER_PMD, which is not true for all archs
> > (if I understand the idea of accounting here right).
> 
> Yeah. good catch. Thank you.
> 
> I'll respin with separate counter for pmd tables. It seems the best
> option.

Sounds good to me, thanks.
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