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| author | David Rientjes <rientjes@google.com> | 2009-12-14 17:58:33 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-15 08:53:13 -0800 |
| commit | 8fe23e057172223fe2048768a4d87ab7de7477bc (patch) | |
| tree | d176d8e588fca088adfcb110e7c1bc53a839dc84 /mm/memory_hotplug.c | |
| parent | 9b5e5d0fdc91b73bba8cf5e0fbe3521a953e4e4d (diff) | |
| download | kernel-common-8fe23e057172223fe2048768a4d87ab7de7477bc.tar.gz kernel-common-8fe23e057172223fe2048768a4d87ab7de7477bc.tar.bz2 kernel-common-8fe23e057172223fe2048768a4d87ab7de7477bc.zip | |
mm: clear node in N_HIGH_MEMORY and stop kswapd when all memory is offlined
When memory is hot-removed, its node must be cleared in N_HIGH_MEMORY if
there are no present pages left.
In such a situation, kswapd must also be stopped since it has nothing left
to do.
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Rik van Riel <riel@redhat.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Nishanth Aravamudan <nacc@us.ibm.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Adam Litke <agl@us.ibm.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Eric Whitney <eric.whitney@hp.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory_hotplug.c')
| -rw-r--r-- | mm/memory_hotplug.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index e8116f8bdffa..bc5a08138f1e 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -853,6 +853,10 @@ repeat: setup_per_zone_wmarks(); calculate_zone_inactive_ratio(zone); + if (!node_present_pages(node)) { + node_clear_state(node, N_HIGH_MEMORY); + kswapd_stop(node); + } vm_total_pages = nr_free_pagecache_pages(); writeback_set_ratelimit(); |