[GIT pull] core fixes for 2.6.31

[GIT pull] core fixes for 2.6.31

[Thomas Gleixner]

Linus,

Please pull the latest core-fixes-for-linus-2 git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git core-fixes-for-linus-2

Thanks,

	tglx

------------------>
Sonny Rao (1):
      futexes: Fix infinite loop in get_futex_key() on huge page


 kernel/futex.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/futex.c b/kernel/futex.c
index 794c862..0672ff8 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -247,6 +247,7 @@ again:
 	if (err < 0)
 		return err;
 
+	page = compound_head(page);
 	lock_page(page);
 	if (!page->mapping) {
 		unlock_page(page);