Re: [PATCH mm-unstable v1 20/20] mm: rename FOLL_FORCE to FOLL_PTRACE

On Wed, Nov 16, 2022 at 10:16:34AM -0800, Linus Torvalds wrote:

There _are_ also small random cases too, like get_cmdline(). Maybe that counts as ptrace, but the execve() case most definitely does not.

Oh, er, why does get_arg_page() even need FOLL_FORCE? This is writing the new stack contents to the nascent brpm->vma, which was newly allocated with VM_STACK_FLAGS, which an arch can override, but they all appear to include VM_WRITE | VM_MAYWRITE.