lkml.org 
[lkml]   [2012]   [Sep]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: [PATCH 2/2] mm: support MIGRATE_DISCARD
Hi Kyungmin,

On Fri, Sep 07, 2012 at 04:31:17PM +0900, Kyungmin Park wrote:
> On 9/7/12, Kyungmin Park <kmpark@infradead.org> wrote:
> > Hi Minchan,
> >
> > I tested Mel patch again with ClearPageActive(page). but after some
> > testing, it's stall and can't return from
> > reclaim_clean_pages_from_list(&cc.migratepages).
> >
> > Maybe it's related with unmap feature from yours?
> > stall is not happened from your codes until now.
> >
> > I'll test it more and report any issue if happened.
> Updated. it's hang also. there are other issues.

It was silly mistake in my patch and I suspect it fixes your issue
because I guess you already tried below patch when you compiled and saw
warning message.
Anyway, if you see hang still after applying below patch,
please enable CONFIG_DEBUG_VM and retest, if you find something, report it.
I hope CONFIG_DEBUG_VM catch something.

Thanks.

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 6668115..51d3f66 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5705,7 +5705,7 @@ static int __alloc_contig_migrate_range(unsigned long start, unsigned
break;
}

- reclaim_clean_pages_from_list(&cc.migratepages, cc.zone);
+ reclaim_clean_pages_from_list(cc.zone, &cc.migratepages);

ret = migrate_pages(&cc.migratepages,
__alloc_contig_migrate_alloc,
(END)

--
Kind regards,
Minchan Kim


\
 
 \ /
  Last update: 2012-09-07 10:42    [W:0.070 / U:1.224 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site