(2012/07/05 9:45), Johannes Weiner wrote: > shmem knows for sure that the page is in swap cache when attempting to > charge a page, because the cache charge entry function has a check for > it. Only anon pages may be removed from swap cache already when > trying to charge their swapin. > > Adjust the comment, though: '4969c11 mm: fix swapin race condition' > added a stable PageSwapCache check under the page lock in the > do_swap_page() before calling the memory controller, so it's > unuse_pte()'s pte_same() that may fail. > > Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
