On Mon, Jan 30, 2023 at 08:55:00PM +0800, Yin Fengwei wrote: > Allow the batched page table population added to fault > around handler and benefit both file read and shared > fault. > > Signed-off-by: Yin Fengwei <fengwei.yin@xxxxxxxxx> Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> Perhaps the performance effect of this patch should go into this patch's description since it's so dramatic? I would change-log this as: The shared fault handler can also benefit from fault-around. While it is uncommon to write to MAP_SHARED files, applications that do will see a huge benefit with will-it-scale:page_fault3 (shared file write fault) improving by 375%.
