On 2022/6/27 20:43, Qian Cai wrote: > On Sat, Jun 25, 2022 at 05:33:45PM +0800, Miaohe Lin wrote: >> si->inuse_pages could still be accessed concurrently now. The plain reads >> outside si->lock critical section, i.e. swap_show and si_swapinfo, which >> results in data races. READ_ONCE and WRITE_ONCE is used to fix such data >> races. Note these data races should be ok because they're just used for >> showing swap info. > > Was this found by kcsan? If so, it would be useful to record the exact > kscan report in the commit message. Sorry, it's found via code inspection. Thanks. > . >
