From: Rik van Riel <riel@redhat.com>
To: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: linux-mm@kvack.org, akpm@linux-foundation.org, mel@csn.ul.ie,
clameter@sgi.com, balbir@linux.vnet.ibm.com, andrea@suse.de,
a.p.zijlstra@chello.nl, eric.whitney@hp.com, npiggin@suse.de
Subject: Re: [PATCH/RFC 9/14] Reclaim Scalability: SHM_LOCKED pages are nonreclaimable
Date: Sun, 16 Sep 2007 22:18:41 -0400 [thread overview]
Message-ID: <46EDE401.6070300@redhat.com> (raw)
In-Reply-To: <20070914205457.6536.41479.sendpatchset@localhost>
Lee Schermerhorn wrote:
> PATCH/RFC 09/14 Reclaim Scalability: SHM_LOCKED pages are nonreclaimable
>
> Against: 2.6.23-rc4-mm1
>
> While working with Nick Piggin's mlock patches, I noticed that
> shmem segments locked via shmctl(SHM_LOCKED) were not being handled.
> SHM_LOCKed pages work like ramdisk pages--the writeback function
> just redirties the page so that it can't be reclaimed. Deal with
> these using the same approach as for ram disk pages.
Agreed, that needs to be done.
> TODO: patch currently splices all zones' noreclaim lists back
> onto normal LRU lists when shmem region unlocked. Could just
> putback pages from this region/file--e.g., by scanning the
> address space's radix tree using find_get_pages().
Yeah, I guess we'll want this :)
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next prev parent reply other threads:[~2007-09-17 2:18 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-14 20:53 [PATCH/RFC 0/14] Page Reclaim Scalability Lee Schermerhorn
2007-09-14 20:54 ` [PATCH/RFC 1/14] Reclaim Scalability: Convert anon_vma lock to read/write lock Lee Schermerhorn
2007-09-17 11:02 ` Mel Gorman
2007-09-18 2:41 ` KAMEZAWA Hiroyuki
2007-09-18 11:01 ` Mel Gorman
2007-09-18 14:57 ` Rik van Riel
2007-09-18 15:37 ` Lee Schermerhorn
2007-09-18 20:17 ` Lee Schermerhorn
2007-09-20 10:19 ` Mel Gorman
2007-09-14 20:54 ` [PATCH/RFC 2/14] Reclaim Scalability: convert inode i_mmap_lock to reader/writer lock Lee Schermerhorn
2007-09-17 12:53 ` Mel Gorman
2007-09-20 1:24 ` Andrea Arcangeli
2007-09-20 14:10 ` Lee Schermerhorn
2007-09-20 14:16 ` Andrea Arcangeli
2007-09-14 20:54 ` [PATCH/RFC 3/14] Reclaim Scalability: move isolate_lru_page() to vmscan.c Lee Schermerhorn
2007-09-14 21:34 ` Peter Zijlstra
2007-09-15 1:55 ` Rik van Riel
2007-09-17 14:11 ` Lee Schermerhorn
2007-09-17 9:20 ` Balbir Singh
2007-09-17 19:19 ` Lee Schermerhorn
2007-09-14 20:54 ` [PATCH/RFC 4/14] Reclaim Scalability: Define page_anon() function Lee Schermerhorn
2007-09-15 2:00 ` Rik van Riel
2007-09-17 13:19 ` Mel Gorman
2007-09-18 1:58 ` KAMEZAWA Hiroyuki
2007-09-18 2:27 ` Rik van Riel
2007-09-18 2:40 ` KAMEZAWA Hiroyuki
2007-09-18 15:04 ` Lee Schermerhorn
2007-09-18 19:41 ` Christoph Lameter
2007-09-19 0:30 ` KAMEZAWA Hiroyuki
2007-09-19 16:58 ` Lee Schermerhorn
2007-09-20 0:56 ` KAMEZAWA Hiroyuki
2007-09-14 20:54 ` [PATCH/RFC 5/14] Reclaim Scalability: Use an indexed array for LRU variables Lee Schermerhorn
2007-09-17 13:40 ` Mel Gorman
2007-09-17 14:17 ` Lee Schermerhorn
2007-09-17 14:39 ` Lee Schermerhorn
2007-09-17 18:58 ` Balbir Singh
2007-09-17 19:12 ` Lee Schermerhorn
2007-09-17 19:36 ` Balbir Singh
2007-09-17 19:36 ` Rik van Riel
2007-09-17 20:21 ` Balbir Singh
2007-09-17 21:01 ` Rik van Riel
2007-09-14 20:54 ` [PATCH/RFC 6/14] Reclaim Scalability: "No Reclaim LRU Infrastructure" Lee Schermerhorn
2007-09-14 22:47 ` Christoph Lameter
2007-09-17 15:17 ` Lee Schermerhorn
2007-09-17 18:41 ` Christoph Lameter
2007-09-18 9:54 ` Mel Gorman
2007-09-18 19:45 ` Christoph Lameter
2007-09-19 11:11 ` Mel Gorman
2007-09-19 18:03 ` Christoph Lameter
2007-09-19 6:00 ` Balbir Singh
2007-09-19 14:47 ` Lee Schermerhorn
2007-09-14 20:54 ` [PATCH/RFC 7/14] Reclaim Scalability: Non-reclaimable page statistics Lee Schermerhorn
2007-09-17 1:56 ` Rik van Riel
2007-09-14 20:54 ` [PATCH/RFC 8/14] Reclaim Scalability: Ram Disk Pages are non-reclaimable Lee Schermerhorn
2007-09-17 1:57 ` Rik van Riel
2007-09-17 14:40 ` Lee Schermerhorn
2007-09-17 18:42 ` Christoph Lameter
2007-09-14 20:54 ` [PATCH/RFC 9/14] Reclaim Scalability: SHM_LOCKED pages are nonreclaimable Lee Schermerhorn
2007-09-17 2:18 ` Rik van Riel [this message]
2007-09-14 20:55 ` [PATCH/RFC 10/14] Reclaim Scalability: track anon_vma "related vmas" Lee Schermerhorn
2007-09-17 2:52 ` Rik van Riel
2007-09-17 15:52 ` Lee Schermerhorn
2007-09-14 20:55 ` [PATCH/RFC 11/14] Reclaim Scalability: swap backed pages are nonreclaimable when no swap space available Lee Schermerhorn
2007-09-17 2:53 ` Rik van Riel
2007-09-18 17:46 ` Lee Schermerhorn
2007-09-18 20:01 ` Rik van Riel
2007-09-19 14:55 ` Lee Schermerhorn
2007-09-18 2:59 ` KAMEZAWA Hiroyuki
2007-09-18 15:47 ` Lee Schermerhorn
2007-09-14 20:55 ` [PATCH/RFC 12/14] Reclaim Scalability: Non-reclaimable Mlock'ed pages Lee Schermerhorn
2007-09-14 20:55 ` [PATCH/RFC 13/14] Reclaim Scalability: Handle Mlock'ed pages during map/unmap and truncate Lee Schermerhorn
2007-09-14 20:55 ` [PATCH/RFC 14/14] Reclaim Scalability: cull non-reclaimable anon pages in fault path Lee Schermerhorn
2007-09-14 21:11 ` [PATCH/RFC 0/14] Page Reclaim Scalability Peter Zijlstra
2007-09-14 21:42 ` Linus Torvalds
2007-09-14 22:02 ` Peter Zijlstra
2007-09-15 0:07 ` Linus Torvalds
2007-09-17 6:44 ` Balbir Singh
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