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| author | Minchan Kim <minchan.kim@gmail.com> | 2009-06-16 15:32:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-16 19:47:42 -0700 |
| commit | bce7394a3ef82b8477952fbab838e4a6e8cb47d2 (patch) | |
| tree | 7e2f50300dc4edf471a67c1871f288f031fd84f7 /mm/memory_hotplug.c | |
| parent | 96cb4df5ddf5e6d5785b5acd4003e3689b87f896 (diff) | |
| download | talos-obmc-linux-bce7394a3ef82b8477952fbab838e4a6e8cb47d2.tar.gz talos-obmc-linux-bce7394a3ef82b8477952fbab838e4a6e8cb47d2.zip | |
page-allocator: reset wmark_min and inactive ratio of zone when hotplug happens
Solve two problems.
Whenever memory hotplug sucessfully happens, zone->present_pages
have to be changed.
1) Now memory hotplug calls setup_per_zone_wmark_min only when
online_pages called, not offline_pages.
It breaks balance.
2) If zone->present_pages is changed, we also have to change
zone->inactive_ratio. That's because inactive_ratio depends on
zone->present_pages.
Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.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 037291e15b27..e4412a676c88 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -423,6 +423,7 @@ int online_pages(unsigned long pfn, unsigned long nr_pages) zone->zone_pgdat->node_present_pages += onlined_pages; setup_per_zone_wmarks(); + calculate_zone_inactive_ratio(zone); if (onlined_pages) { kswapd_run(zone_to_nid(zone)); node_set_state(zone_to_nid(zone), N_HIGH_MEMORY); @@ -832,6 +833,9 @@ repeat: totalram_pages -= offlined_pages; num_physpages -= offlined_pages; + setup_per_zone_wmarks(); + calculate_zone_inactive_ratio(zone); + vm_total_pages = nr_free_pagecache_pages(); writeback_set_ratelimit(); |
