Re: Deadlock on the mm->mmap_sem

[David Howells]

Andrea Arcangeli <[e-mail]> wrote:
> the process doesn't need to lock multiple mm_structs at the same time.

fork, ptrace, /proc/pid/mem, /proc/pid/maps

All have to be able to lock two process's mm_structs simultaneously, even if
it's indirectly through copy_to_user() or copy_from_user().

David