linux-kernel - Re: [PATCH v3 06/10] fs/namei.c: Improve dcache hash function

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Message-ID: <20160602182313.29046.qmail@ns.sciencehorizons.net>
Date:	2 Jun 2016 14:23:13 -0400
From:	"George Spelvin" <linux@...encehorizons.net>
To:	linux@...encehorizons.net, torvalds@...ux-foundation.org
Cc:	bfields@...hat.com, deller@....de, linux-kernel@...r.kernel.org,
	peterz@...radead.org
Subject: Re: [PATCH v3 06/10] fs/namei.c: Improve dcache hash function

Linus Torvalds wrote:
> Don't worry about pa-risc. There may be a handful of users, where even
> "users" is more of a "boot up occasionally just for perverse fun"
> rather than anything else.

Yes, I'm quite aware that, like alpha and ia64, it's purely of historical
interest.  It's not even in the second tier of chips that are still being
bought to get real work done, like MIPS (a lot of consumer routers!) and
SPARC.

(Offended Itanium fanbois, please go back to sleep until Kittson is
atually for sale.)

But it's an interesting architecture (in the same sense that a platypus
is an "interesting animal"), the maintainers are happy to test patches,
and I presume I'm permitted to amuse muself messing with it as long as it
doesn't cause problems for the non-Jamaican bobsled teams.

(Note that PA-RISC does't support unaligned loads, so it doesn't use the
word-at-a-time code path at all.)