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authorChristoph Lameter <clameter@sgi.com>2008-03-27 07:03:04 +0300
committerIngo Molnar <mingo@elte.hu>2008-03-27 18:08:45 +0300
commit25e59881f109dc6378ebc463ae4c2de907435de3 (patch)
treea8fb0090cff8ad34103b47c0a894b39fe41f1013 /arch/x86/mm/hugetlbpage.c
parentb2ef749720a97053d60605a7456772a1752164cc (diff)
downloadlinux-25e59881f109dc6378ebc463ae4c2de907435de3.tar.xz
x86: stricter check in follow_huge_addr()
The first page of the compound page is determined in follow_huge_addr() but then PageCompound() only checks if the page is part of a compound page. PageHead() allows checking if this is indeed the first page of the compound. Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/hugetlbpage.c')
-rw-r--r--arch/x86/mm/hugetlbpage.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
index 4fbafb4bc2f0..0b3d567e686d 100644
--- a/arch/x86/mm/hugetlbpage.c
+++ b/arch/x86/mm/hugetlbpage.c
@@ -178,7 +178,7 @@ follow_huge_addr(struct mm_struct *mm, unsigned long address, int write)
page = &pte_page(*pte)[vpfn % (HPAGE_SIZE/PAGE_SIZE)];
- WARN_ON(!PageCompound(page));
+ WARN_ON(!PageHead(page));
return page;
}