From: Peter Zijlstra <peterz@infradead.org>
To: Hugh Dickins <hugh@veritas.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>, Nick Piggin <npiggin@suse.de>,
riel <riel@redhat.com>, Lennart Poettering <mztabzr@0pointer.de>
Subject: Re: [rfc][patch] mm: madvise(WILLNEED) for anonymous memory
Date: Thu, 20 Dec 2007 16:23:39 +0100 [thread overview]
Message-ID: <1198164219.6821.36.camel@twins> (raw)
In-Reply-To: <1198163908.6821.33.camel@twins>
On Thu, 2007-12-20 at 16:18 +0100, Peter Zijlstra wrote:
> +static int madvise_willneed_anon_pte(pte_t *ptep,
> + unsigned long start, unsigned long end, void *arg)
> +{
> + struct vm_area_struct *vma = arg;
> + struct page *page;
> +
> + page = read_swap_cache_async(pte_to_swp_entry(*ptep), GFP_KERNEL,
Argh, with HIGHPTE this is done inside a kmap_atomic.
/me goes complicate the code with page pre-allocation..
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next prev parent reply other threads:[~2007-12-20 15:23 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-20 13:05 Peter Zijlstra
2007-12-20 14:09 ` Hugh Dickins
2007-12-20 14:47 ` Peter Zijlstra
2007-12-20 14:56 ` Peter Zijlstra
2007-12-20 15:18 ` Peter Zijlstra
2007-12-20 15:23 ` Peter Zijlstra [this message]
2007-12-20 15:26 ` Hugh Dickins
2007-12-20 16:53 ` Peter Zijlstra
2007-12-20 17:11 ` Matt Mackall
2007-12-20 17:15 ` Peter Zijlstra
2007-12-20 16:29 ` Lennart Poettering
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