On 2020/07/14 21:37, Michal Hocko wrote:
> - if (mutex_lock_killable(&oom_lock))
> + if (!mutex_trylock(&oom_lock))
> return true;
I don't like this change. The trylock needlessly wastes CPU time which could
have been utilized by the OOM killer/reaper for reclaiming memory.
Rather, I want to change
- if (!mutex_trylock(&oom_lock)) {
+ if (mutex_lock_killable(&oom_lock)) {
in __alloc_pages_may_oom() side.
