(2012/07/05 9:45), Johannes Weiner wrote: > Only anon and shmem pages in the swap cache are attempted to be > charged multiple times, from every swap pte fault or from > shmem_unuse(). No other pages require checking PageCgroupUsed(). > > Charging pages in the swap cache is also serialized by the page lock, > and since both the try_charge and commit_charge are called under the > same page lock section, the PageCgroupUsed() check might as well > happen before the counter charging, let alone reclaim. > > Signed-off-by: Johannes Weiner <[email protected]>
You're right. This is SwapCache handling is done by commit d13d144309d... I should notice this.... Thank you very much ! Acked-by: KAMEZAWA Hiroyuki <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
