Re: [PATCH mm-hotfixses] Revert "mm: limit filemap_fault readahead to VMA boundaries"

From: Matthew Wilcox

Date: Mon Jun 22 2026 - 13:11:37 EST


On Mon, Jun 22, 2026 at 09:58:55AM -0700, Andrew Morton wrote:
> > > much as I personally find restricting mmap readahead to a VMA a sensible
> > > thing to do). We just need to figure out how to improve the Android
> > > usecase.
>
> Would a helpful heuristic be to do what 7b32f64bc512 is doing, but only
> if PROT_EXEC?

I was wondering the same thing. But I think it's right to back this out
for now and try that after -rc1 so it gets some time soaking and
bot-teesting.