powerpc: gup_hugepte() avoid freeing the head page too many times
commit9aa7c2a5e45e27dafa757989b307df18a8e7309b
authorAndrea Arcangeli <aarcange@redhat.com>
Wed, 2 Nov 2011 20:37:11 +0000 (2 13:37 -0700)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 11 Nov 2011 17:43:59 +0000 (11 09:43 -0800)
tree65b46333ad0b73891c2d560ea644e1a668ea91fb
parent80a76e1db5d707c14b0a8f519ff08d4ee4586482
powerpc: gup_hugepte() avoid freeing the head page too many times

commit 8596468487e2062cae2aad56e973784e03959245 upstream.

We only taken "refs" pins on the head page not "*nr" pins.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <jweiner@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
arch/powerpc/mm/hugetlbpage.c