On 23.11.21 18:17, Shakeel Butt wrote: > On Tue, Nov 23, 2021 at 8:57 AM David Hildenbrand <david@xxxxxxxxxx> wrote: >> > [...] >>>> >>>> I do wonder which these locking contexts are exactly, and if we could >>>> also do the same thing on ordinary munmap -- because I assume it can be >>>> similarly problematic for some applications. >>> >>> This is a good question regarding munmap. One main difference is >>> munmap takes mmap_lock in write mode and usually performance critical >>> applications avoid such operations. >> >> Maybe we can extend it too most page zapping, if that makes things simpler. >> > > Do you mean doing sync THP split for most of page zapping functions > (but only if that makes things simpler)? > Yes -- if there are no downsides. -- Thanks, David / dhildenb
