linux-kernel - Re: [Devel] [PATCH 6/6] BC: kernel memory accounting (marks)

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Message-Id: <1156357820.12011.45.camel@localhost.localdomain>
Date:	Wed, 23 Aug 2006 11:30:20 -0700
From:	Dave Hansen <haveblue@...ibm.com>
To:	devel@...nvz.org
Cc:	Andrew Morton <akpm@...l.org>, Rik van Riel <riel@...hat.com>,
	Chandra Seetharaman <sekharan@...ibm.com>,
	Greg KH <greg@...ah.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andi Kleen <ak@...e.de>, Christoph Hellwig <hch@...radead.org>,
	Andrey Savochkin <saw@...ru>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Rohit Seth <rohitseth@...gle.com>,
	Matt Helsley <matthltc@...ibm.com>,
	Oleg Nesterov <oleg@...sign.ru>
Subject: Re: [Devel] [PATCH 6/6] BC: kernel memory accounting (marks)

I'm still a bit concerned about if we actually need the 'struct page'
pointer.  I've gone through all of the users, and I'm not sure that I
see any that _require_ having a pointer in 'struct page'.  I think it
will take some rework, especially with the pagetables, but it should be
quite doable.

vmalloc:
	Store in vm_struct
fd_set_bits:
poll_get:
mount hashtable:
	Don't need alignment.  use the slab?
pagetables:
	either store in an extra field of 'struct page', or use the
	mm's.  mm should always be available when alloc/freeing a
	pagetable page

Did I miss any?

-- Dave

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