On Sun, 9 May 2010 18:32:32 -0700 (PDT) Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > > On Sun, 9 May 2010, Linus Torvalds wrote: > > > > So I never disliked that patch. I'm perfectly happy with a "don't migrate > > these pages at all, because they are in a half-way state in the middle of > > execve stack magic". > > Btw, I also think that Mel's patch could be made a lot _less_ magic by > just marking that initial stack vma with a VM_STACK_INCOMPLETE_SETUP bit, > instead of doing that "maybe_stack" thing. We could easily make that > initial vma setup very explicit indeed, and then just clear that bit when > we've moved the stack to its final position. > Hmm. vm_flags is still 32bit..(I think it should be long long) Using combination of existing flags... #define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEC_READ) Can be used instead of checking mapcount, I think. Thanks, -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>