Re: /proc/<n>/maps growing...

[David S. Miller]

Andrea Arcangeli writes:
 > Can somebody see a problem with this design?

As someone who was involved when the merge_segments stuff got tossed
by Linus, the reason was that the locking is utterly atrocious.

After trying to get the SMP locking correct _four_ times, Linus
basically said to me "This merging so stupidly complex, and we don't
need it at all.  We only need merging for very simple cases."

I think he's right.  The old code was trying to do everything and
made the locking more difficult than it needed to be.

Later,
David S. Miller
[e-mail]