The patch titled
mm: do_migrate_range: exit loop if not_managed is true
has been added to the -mm tree. Its filename is
mm-do_migrate_range-exit-loop-if-not_managed-is-true.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mm: do_migrate_range: exit loop if not_managed is true
From: Bob Liu <lliubbo@xxxxxxxxx>
If not_managed is true all pages will be putback to lru, so break the loop
earlier to skip other pages isolate.
Signed-off-by: Bob Liu <lliubbo@xxxxxxxxx>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Acked-by: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Mel Gorman <mel@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory_hotplug.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff -puN mm/memory_hotplug.c~mm-do_migrate_range-exit-loop-if-not_managed-is-true mm/memory_hotplug.c
--- a/mm/memory_hotplug.c~mm-do_migrate_range-exit-loop-if-not_managed-is-true
+++ a/mm/memory_hotplug.c
@@ -696,15 +696,17 @@ do_migrate_range(unsigned long start_pfn
page_is_file_cache(page));
} else {
- /* Becasue we don't have big zone->lock. we should
- check this again here. */
- if (page_count(page))
- not_managed++;
#ifdef CONFIG_DEBUG_VM
printk(KERN_ALERT "removing pfn %lx from LRU failed\n",
pfn);
dump_page(page);
#endif
+ /* Becasue we don't have big zone->lock. we should
+ check this again here. */
+ if (page_count(page)) {
+ not_managed++;
+ break;
+ }
}
}
ret = -EBUSY;
_
Patches currently in -mm which might be from lliubbo@xxxxxxxxx are
origin.patch
linux-next.patch
mm-page_isolation-codeclean-fix-comment-and-rm-unneeded-val-init.patch
mm-do_migrate_range-exit-loop-if-not_managed-is-true.patch
mm-do_migrate_range-reduce-list_empty-check.patch
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