On Mon, 14 May 2012, Pravin B Shelar wrote: > Transparent huge pages can change page->flags (PG_compound_lock) > without taking Slab lock. Since THP can not break slab pages we can > safely access compound page without taking compound lock. > > Specificly this patch fixes race between compound_unlock and slab > functions which does page-flags update. This can occur when > get_page/put_page is called on page from slab object. You need to also get this revbiewed by the THP folks like Andrea & friends. Reviewed-by: Christoph Lameter <cl@xxxxxxxxx> -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>