On Wed, Jul 24, 2024 at 03:52:05PM -0700, Andrii Nakryiko wrote: > Extend freader with a flag specifying whether it's OK to cause page > fault to fetch file data that is not already physically present in > memory. With this, it's now easy to wait for data if the caller is > running in sleepable (faultable) context. How does that interact with kmap_local disabling preemption on highmem?