Ok, I bet it doesn't make them a non-issue, but if doing this in
anon_vma_clone() helped a lot, then doing the exact same pattern in
unlink_anon_vmas() hopefully helps some more.
Hi Linus,
I did essentially the same thing (just in a less elegant, more paranoid
way) in my old
batching patches.
http://comments.gmane.org/gmane.linux.kernel.mm/63130
They made it a bit better, but overall it's still much worse than 2.6.35
(.36 introduced the
root chain locking). I guess we'll see if it can recover mutex though,
but I'm not
optimistic.
-Andi
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