Commit e386eed8 authored May 05, 2015 by Naoya Horiguchi Committed by Linus Torvalds May 05, 2015

mm/hwpoison-inject: check PageLRU of hpage



Hwpoison injector checks PageLRU of the raw target page to find out
whether the page is an appropriate target, but current code now filters
out thp tail pages, which prevents us from testing for such cases via this
interface.  So let's check hpage instead of p.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Dean Nelson <dnelson@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 7ea434a4

mm/hwpoison-inject.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -34,12 +34,12 @@ static int hwpoison_inject(void *data, u64 val)
		if (!hwpoison_filter_enable)
		goto inject;

		if (!PageLRU(p) && !PageHuge(p))
		shake_page(p, 0);
		if (!PageLRU(hpage) && !PageHuge(p))
		shake_page(hpage, 0);
		/*
		* This implies unable to support non-LRU pages.
		*/
		if (!PageLRU(p) && !PageHuge(p))
		if (!PageLRU(hpage) && !PageHuge(p))
		goto put_out;

		/*