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mm/hugetlb.c: avoid bogus counter of surplus huge page

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If we have to hand back the newly allocated huge page to page allocator,
for any reason, the changed counter should be recovered.

This affects only s390 at present.

Signed-off-by: Hillf Danton <[email protected]>
Reviewed-by: Michal Hocko <[email protected]>
Acked-by: KAMEZAWA Hiroyuki <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: Heiko Carstens <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Hillf Danton 2012-01-10 15:08:30 -08:00 • committed by Linus Torvalds
commit ea5768c74b
1 changed files with 1 additions and 1 deletions
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mm/hugetlb.c
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@ -800,7 +800,7 @@ static struct page *alloc_buddy_huge_page(struct hstate *h, int nid)
if (page && arch_prepare_hugepage(page)) {
__free_pages(page, huge_page_order(h));
return NULL;
page = NULL;
}
spin_lock(&hugetlb_lock);