Mike Frysinger<vapier@xxxxxxxxxx> wrote:This keeps access_process_vm() in nommu.c align with the one in memory.c. If this does really matter, someone or me can write another patch to take care of it for both MMU and !MMU later.
- len -= copy_to_user((void *) addr, buf, len);
+ copy_to_user_page(vma, NULL, NULL,
+ (void *) addr, buf, len);
else if (!write&& vma->vm_flags& VM_MAYREAD)
- len -= copy_from_user(buf, (void *) addr, len);
+ copy_from_user_page(vma, NULL, NULL,
+ buf, (void *) addr, len);
Hmmm... With this, len isn't updated anymore, and so it alters the return
value of access_process_vm(), and means ptrace_readdata() won't now return
-EIO under some circumstances where it used to. I'm not sure that matters,
though.