On Mon, Dec 13, 2021 at 12:06:34AM +0000, Matthew Wilcox (Oracle) wrote: > +++ b/arch/arm/kernel/crash_dump.c > @@ -27,9 +27,8 @@ > * @buf. If @buf is in userspace, set @userbuf to %1. Returns number of bytes > * copied or negative error in case of failure. > */ > -ssize_t copy_oldmem_page(unsigned long pfn, char *buf, > - size_t csize, unsigned long offset, > - int userbuf) > +ssize_t copy_oldmem_page(struct iov_iter *iter, unsigned long pfn, > + size_t csize, unsigned long offset) > { > void *vaddr; > I forgot to mention that I didn't adjust the kernel-doc. I'm tempted to remove it entirely, to be honest. It's not included into the rst files, and having the documentation repeated ten times across arch directories isn't useful.