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From: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
To: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Rik van Riel <riel@redhat.com>,
	linux-kernel@vger.kernel.org,
	KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
	linux-mm@kvack.org
Subject: Re: [patch 14/21] scan noreclaim list for reclaimable pages
Date: Fri, 29 Feb 2008 09:38:54 -0500	[thread overview]
Message-ID: <1204295934.5311.3.camel@localhost> (raw)
In-Reply-To: <20080228154152.9648b7b8.randy.dunlap@oracle.com>

On Thu, 2008-02-28 at 15:41 -0800, Randy Dunlap wrote:
> On Thu, 28 Feb 2008 14:29:22 -0500 Rik van Riel wrote:
> 
> > V2 -> V3:
> > + rebase to 23-mm1 atop RvR's split LRU series
> > 
> > New in V2
> > 
> > This patch adds a function to scan individual or all zones' noreclaim
> > lists and move any pages that have become reclaimable onto the respective
> > zone's inactive list, where shrink_inactive_list() will deal with them.
> > 
> > This replaces the function to splice the entire noreclaim list onto the
> > active list for rescan by shrink_active_list().  That method had problems
> > with vmstat accounting and complicated '[__]isolate_lru_pages()'.  Now,
> > __isolate_lru_page() will never isolate a non-reclaimable page.  The
> > only time it should see one is when scanning nearby pages for lumpy
> > reclaim.
> > 
> >   TODO:  This approach may still need some refinement.
> >          E.g., put back to active list?
> > 
> > DEBUGGING ONLY: NOT FOR UPSTREAM MERGE
> > 
> > Signed-off-by:  Lee Schermerhorn <lee.schermerhorn@hp.com>
> > Signed-off-by:  Rik van Riel <riel@redhat.com>
> 
> 
> Hi,
> 
> I haven't looked at all 21 patches, but please use kernel-doc
> notation as it's defined.  See Documentation/kernel-doc-nano-HOWTO.txt
> for details, or ask.

Hi, Randy:

I'll make a pass thru the noreclaim patches and fix up the comment
blocks that are not quite kernel-doc.  I have to update some of the
patch descriptions as well, as some have become stale thanks to
additional work by Kosaki-san [e.g., the page vec cleanup].

I'll discuss with Rik, off-list, how to coordinate for the next
reposting.

Thanks,
Lee


  reply	other threads:[~2008-02-29 14:38 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-28 19:29 [patch 00/21] VM pageout scalability improvements Rik van Riel
2008-02-28 19:29 ` [patch 01/21] move isolate_lru_page() to vmscan.c Rik van Riel
2008-02-29  2:29   ` KOSAKI Motohiro
2008-02-29  2:41     ` Rik van Riel
2008-02-29  2:47       ` KOSAKI Motohiro
2008-02-28 19:29 ` [patch 02/21] Use an indexed array for LRU variables Rik van Riel
2008-02-29 16:03   ` Andy Whitcroft
2008-03-03 18:57     ` Rik van Riel
2008-02-28 19:29 ` [patch 03/21] use an array for the LRU pagevecs Rik van Riel
2008-02-29 15:40   ` Andy Whitcroft
2008-03-01  7:02     ` KOSAKI Motohiro
2008-03-04 11:04       ` KOSAKI Motohiro
2008-03-04 20:38         ` Rik van Riel
2008-03-05  1:38           ` KOSAKI Motohiro
2008-02-28 19:29 ` [patch 04/21] free swap space on swap-in/activation Rik van Riel
2008-02-28 20:05   ` Lee Schermerhorn
2008-02-28 20:20     ` Rik van Riel
2008-02-28 19:29 ` [patch 05/21] define page_file_cache() function Rik van Riel
2008-02-29 11:53   ` KOSAKI Motohiro
2008-02-28 19:29 ` [patch 06/21] split LRU lists into anon & file sets Rik van Riel
2008-03-01 12:13   ` KOSAKI Motohiro
2008-03-01 12:46   ` KOSAKI Motohiro
2008-02-28 19:29 ` [patch 07/21] SEQ replacement for anonymous pages Rik van Riel
2008-03-03 10:50   ` barrioskmc@gmail
2008-02-28 19:29 ` [patch 08/21] (NEW) add some sanity checks to get_scan_ratio Rik van Riel
2008-03-04 10:40   ` minchan Kim
2008-02-28 19:29 ` [patch 09/21] (NEW) improve reclaim balancing Rik van Riel
2008-03-01 13:35   ` KOSAKI Motohiro
2008-03-03 19:26     ` Rik van Riel
2008-02-28 19:29 ` [patch 10/21] add newly swapped in pages to the inactive list Rik van Riel
2008-02-28 19:29 ` [patch 11/21] (NEW) more aggressively use lumpy reclaim Rik van Riel
2008-03-02 10:35   ` KOSAKI Motohiro
2008-03-02 14:23     ` Rik van Riel
2008-02-28 19:29 ` [patch 12/21] No Reclaim LRU Infrastructure Rik van Riel
     [not found]   ` <44c63dc40802282058h67f7597bvb614575f06c62e2c@mail.gmail.com>
2008-02-29 14:48     ` Lee Schermerhorn
     [not found]       ` <44c63dc40803021904n5de681datba400e08079c152d@mail.gmail.com>
2008-03-03  3:06         ` minchan Kim
2008-03-03 18:46         ` Rik van Riel
2008-03-03 23:38           ` barrioskmc@gmail
2008-03-04  1:55             ` Rik van Riel
2008-03-04 10:46   ` KOSAKI Motohiro
2008-03-04 15:05     ` Lee Schermerhorn
2008-03-04 21:21       ` Rik van Riel
2008-03-05  1:42       ` KOSAKI Motohiro
2008-02-28 19:29 ` [patch 13/21] Non-reclaimable page statistics Rik van Riel
2008-02-28 19:29 ` [patch 14/21] scan noreclaim list for reclaimable pages Rik van Riel
2008-02-28 23:41   ` Randy Dunlap
2008-02-29 14:38     ` Lee Schermerhorn [this message]
2008-02-28 19:29 ` [patch 15/21] ramfs pages are non-reclaimable Rik van Riel
2008-02-28 19:29 ` [patch 16/21] SHM_LOCKED pages are nonreclaimable Rik van Riel
2008-02-28 19:29 ` [patch 17/21] non-reclaimable mlocked pages Rik van Riel
     [not found]   ` <44c63dc40802282055q508af6ccsb0e8ac3fb5e67d24@mail.gmail.com>
2008-02-29 14:47     ` Lee Schermerhorn
2008-02-28 19:29 ` [patch 18/21] mlock vma pages under mmap_sem held for read Rik van Riel
2008-02-28 19:29 ` [patch 19/21] handle mlocked pages during map/unmap and truncate Rik van Riel
2008-02-28 19:29 ` [patch 20/21] account mlocked pages Rik van Riel
2008-02-28 19:29 ` [patch 21/21] cull non-reclaimable anon pages from the LRU at fault time Rik van Riel
2008-02-28 20:19   ` Lee Schermerhorn
2008-02-28 22:27     ` Rik van Riel
2008-02-28 19:49 ` [patch 00/21] VM pageout scalability improvements Rik van Riel
2008-02-28 20:14 ` John Stoffel
2008-02-28 20:23   ` Rik van Riel

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