From: "Stephen C. Tweedie" <sct@redhat.com>
To: neil@tc-1-192.ariake.gol.ne.jp
Cc: "Stephen C. Tweedie" <sct@redhat.com>, Linux-MM <linux-mm@kvack.org>
Subject: Re: A couple of questions
Date: Tue, 16 Mar 1999 12:22:27 GMT [thread overview]
Message-ID: <199903161222.MAA01394@dax.scot.redhat.com> (raw)
In-Reply-To: <19990316074606.A10483@tc-1-192.ariake.gol.ne.jp>
Hi,
On Tue, 16 Mar 1999 07:46:06 +0900, neil@tc-1-192.ariake.gol.ne.jp
said:
> Thanks for your reply. I think you've missed my point on this one.
> The variable "pte" is set before calling __get_free_page(), and being
> local cannot be modified by other processes.
Umm, OK, you've convinced me. :) I think we have enough locks held
throughout this to prevent the present or writable bits in *page_table
from changing between the test in handle_pte_fault() and do_wp_page()
itself, even on SMP.
--Stephen
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next prev parent reply other threads:[~1999-03-16 12:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-03-02 13:11 Neil Booth
1999-03-15 18:58 ` Stephen C. Tweedie
1999-03-15 22:46 ` neil
1999-03-16 12:22 ` Stephen C. Tweedie [this message]
1999-03-16 2:11 ` Andrea Arcangeli
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