On 26.11.20 23:23, Peter Xu wrote: > Faulting around for reads are in most cases helpful for the performance so that > continuous memory accesses may avoid another trip of page fault. However it > may not always work as expected. > > For example, userfaultfd registered regions may not be the best candidate for > pre-faults around the reads. Are we getting uffd faults even though no-one actually accessed it? So in case I would track what some part of my program actually reads, I would get wrong notifications? -- Thanks, David / dhildenb
