On Wed, Aug 25, 2021 at 12:17:55PM -0700, Andrew Morton wrote:
From: Miaohe Lin linmiaohe@huawei.com Subject: mm/memory_hotplug: fix potential permanent lru cache disable
If offline_pages failed after lru_cache_disable(), it forgot to do lru_cache_enable() in error path. So we would have lru cache disabled permanently in this case.
Link: https://lkml.kernel.org/r/20210821094246.10149-3-linmiaohe@huawei.com Fixes: d479960e44f2 ("mm: disable LRU pagevec during the migration temporarily") Signed-off-by: Miaohe Lin linmiaohe@huawei.com Reviewed-by: David Hildenbrand david@redhat.com Reviewed-by: Oscar Salvador osalvador@suse.de Reviewed-by: Naoya Horiguchi naoya.horiguchi@nec.com Cc: Chris Goldsworthy cgoldswo@codeaurora.org Cc: Michal Hocko mhocko@suse.com Cc: Minchan Kim minchan@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org
Acked-by: Minchan Kim minchan@kernel.org
Thanks for catching.