On Thu, Jun 16, 2016 at 02:20:02PM +0200, Michal Hocko wrote: > On Tue 14-06-16 11:42:29, Kirill A. Shutemov wrote: > > This reverts commit 5c0a85fad949212b3e059692deecdeed74ae7ec7. > > > > The commit causes ~6% regression in unixbench. > > Is the regression fully explained? My understanding from the email > thread is that this is suspiciously too high. It is not like I would > be against the revert but having an explanation would be really > appreciated. My understanding is that it's overhead on setting accessed bit: http://lkml.kernel.org/r/20160613125248.GA30109@xxxxxxxxxxxxxxxxxx -- Kirill A. Shutemov -- 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>