Re: [RFC PATCH 29/37] fs: list file types that support speculative faults.

[Matthew Wilcox]

On Tue, Apr 06, 2021 at 06:44:54PM -0700, Michel Lespinasse wrote:
> Add a speculative field to the vm_operations_struct, which indicates if
> the associated file type supports speculative faults.
> 
> Initially this is set for files that implement fault() with filemap_fault().

Ugh, no.  This goes away if you don't call ->fault speculatively.