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Subject: Re: [PATCH] powerpc/64: implement a slice mask cache
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Nicholas Piggin <npiggin@gmail.com>, Balbir Singh <bsingharora@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org, Anton Blanchard <anton@samba.org>
Date: Sat, 23 Jul 2016 18:49:06 +1000
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On Sat, 2016-07-23 at 17:10 +1000, Nicholas Piggin wrote:
> I wanted to avoid doing more work under slice_convert_lock, but
> we should just make that a per-mm lock anyway shouldn't we?

Aren't the readers under the mm sem taken for writing or has this
changed ?

Cheers,
Ben.