Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

To: Minchan Kim <minchan.kim@xxxxxxxxx>
Subject: Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
From: Rik van Riel <riel@xxxxxxxxxx>
Date: Fri, 29 Oct 2010 08:31:28 -0400
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>, Ken Chen <kenchen@xxxxxxxxxx>, Ying Han <yinghan@xxxxxxxxxx>, Hugh Dickins <hughd@xxxxxxxxxx>, Nick Piggin <npiggin@xxxxxxxxx>, linux-mm@xxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Delivered-to: linux-mm-outgoing@xxxxxxxxx
Delivered-to: int-list-linux-mm@xxxxxxxxx
Delivered-to: linux-mm@xxxxxxxxx
In-reply-to: <AANLkTiku321ZpSrO4hSLyj7n9NM7QvN+RQ-A73KK4eRa@xxxxxxxxxxxxxx>
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.8) Gecko/20100806 Fedora/3.1.2-1.fc13 Lightning/1.0b2pre Thunderbird/3.1.2

On 10/29/2010 12:27 AM, Minchan Kim wrote:

What happens if we don't flush TLB?
It will make for old page to pretend young page.
If it is, how does it affect reclaim?


Other way around - it will make a young page pretend to be an
old page, because the TLB won't know it needs to flush the
Accessed bit into the page tables (where the bit was recently
cleared).

--
All rights reversed

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxxx  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>

Follow-Ups:
- Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
  - From: Minchan Kim

References:
- [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
  - From: Ying Han
- Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
  - From: Rik van Riel
- Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
  - From: Nick Piggin
- Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
  - From: Nick Piggin
- Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
  - From: Hugh Dickins
- Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
  - From: Ying Han
- Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
  - From: KAMEZAWA Hiroyuki
- Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
  - From: Ken Chen
- Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
  - From: KAMEZAWA Hiroyuki
- Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
  - From: Rik van Riel
- Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
  - From: Minchan Kim

Prev by Date: Re: [RFC][PATCH 0/3] big chunk memory allocator v2
Next by Date: Re: [RFC][PATCH 0/3] big chunk memory allocator v2
Previous by thread: Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
Next by thread: Re: [PATCH] mm: don't flush TLB when propagate PTE access bit to struct page.
Index(es):
- Date
- Thread

[Index of Archives] [Linux ARM Kernel] [Linux ARM] [Linux Omap] [Fedora ARM] [IETF Annouce] [Bugtraq] [Linux] [Linux OMAP] [Linux MIPS] [ECOS] [Asterisk Internet PBX] [Linux API]