On Wed, Feb 28, 2018 at 08:26:11AM +0900, Minchan Kim wrote: > Huang reported PG_readahead flag marked PF_NO_COMPOUND so that > we cannot use the flag for THP page. So, we need to check first > whether page is THP or not before using TestClearPageReadahead > in lookup_swap_cache. > > This patch fixes it. > > Furthermore, swap_[cluster|vma]_readahead cannot mark PG_readahead > for newly allocated page because the allocated page is always a > normal page, not THP at this moment. So let's clean it up, too. > > Cc: Hugh Dickins <hughd@xxxxxxxxxx> > Cc: "Huang, Ying" <ying.huang@xxxxxxxxx> > Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx> Link:http://lkml.kernel.org/r/874lm83zho.fsf@xxxxxxxxxxxxxxxxxxxx -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
