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Re: 2.3 Pagedir allocation/free and update races

To: kanoj@google.engr.sgi.com
Subject: Re: 2.3 Pagedir allocation/free and update races
From: "David S. Miller" <davem@redhat.com>
Date: Tue, 14 Dec 1999 01:55:54 -0800
CC: linux-kernel@vger.rutgers.edu, linux-mm@kvack.org, kanoj@google.engr.sgi.com
In-reply-to: <199912140946.BAA07601@google.engr.sgi.com>(kanoj@google.engr.sgi.com)
References: <199912140946.BAA07601@google.engr.sgi.com>
Sender: owner-linux-mm@kvack.org

   So, all architectures that cache page directories have racy code.

They are cpu local, how can they be racy?

If you are mentioning the kernel pgdir update cases, well even then
many architectures do not even need to update any of the pgtable
caches during such events (sparc64 for example).

Later,
David S. Miller
davem@redhat.com
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References:
- 2.3 Pagedir allocation/free and update races
  - From: kanoj@google.engr.sgi.com (Kanoj Sarcar)
- 2.3 Pagedir allocation/free and update races
  - From: kanoj@google.engr.sgi.com (Kanoj Sarcar)

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