Date: Fri, 25 Mar 2005 09:23:12 -0800
From: "David S. Miller" <davem@davemloft.net>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: hugh@veritas.com, akpm@osdl.org, tony.luck@intel.com,
       benh@kernel.crashing.org, ak@suse.de, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/6] freepgt: free_pgtables use vma list
Message-Id: <20050325092312.4ae2bd32.davem@davemloft.net>
In-Reply-To: <4243A257.8070805@yahoo.com.au>
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On Fri, 25 Mar 2005 16:32:07 +1100
Nick Piggin <nickpiggin@yahoo.com.au> wrote:

> So, to make the question more concrete: if a pgd_t is freed due
> to freeing the single pmd_t contained within it (which was the
> only part of the pgd's address space that contained a valid mapping)
> Then do you need the full PGDIR_SIZE width passed to
> flush_tlb_pgtables, or just the PMD_SIZE'd start,end that covered
> the freed pmd_t?

Just the PMD_SIZE'd start,end is necessary.
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