On Tue, Feb 26, 2019 at 02:49:05PM +0800, Huang, Ying wrote: > Do you have time to take a look at this patch? Hi Ying, is this handling all places where swapoff might cause a task to read invalid data? For example, why don't other reads of swap_map (for example swp_swapcount, page_swapcount, swap_entry_free) need to be synchronized like this?