Dave Peterson <[email protected]> wrote:
>
> The patch below fixes some mm_struct reference counting bugs in
> badness().
hm, OK, afaict the code _is_ racy.
But you're now calling mmput() inside read_lock(&tasklist_lock), and
mmput() can sleep in exit_aio() or in exit_mmap()->unmap_vmas(). So
sterner stuff will be needed.
I'll put a might_sleep() into mmput - it's a bit unexpected.
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