[PATCH 1/3] thp: fix forgetting to reset the page alloc indicator

From: Xiao Guangrong
Date: Wed Sep 12 2012 - 08:58:34 EST

If NUMA is enabled, the indicator is not reset if the previous page
request is failed, then it will trigger the VM_BUG_ON in khugepaged_alloc_page

Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx>
mm/huge_memory.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index e366ca5..66d2bc6 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1825,6 +1825,7 @@ static bool khugepaged_prealloc_page(struct page **hpage, bool *wait)
return false;

*wait = false;
+ *hpage = NULL;
} else if (*hpage) {

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