The new page could be taken by hwpoison, in which case return EAGAIN to allocate a new page and retry. CC: Nick Piggin <npiggin@xxxxxxx> CC: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx> CC: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx> --- mm/migrate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- linux-mm.orig/mm/migrate.c 2009-11-02 10:18:45.000000000 +0800 +++ linux-mm/mm/migrate.c 2009-11-02 10:26:16.000000000 +0800 @@ -556,7 +556,7 @@ static int move_to_new_page(struct page * holding a reference to the new page at this point. */ if (!trylock_page(newpage)) - BUG(); + return -EAGAIN; /* got by hwpoison */ /* Prepare mapping for the new page.*/ newpage->index = page->index; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>