linux-kernel - Re: [GIT] Sparc

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Message-ID: <CA+55aFyqtuh53PmwO65NtM_PrPd51=EMWiv8dU8bNTrXL59=Jg@mail.gmail.com>
Date:	Fri, 24 Oct 2014 12:47:48 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	David Miller <davem@...emloft.net>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	sparclinux@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [GIT] Sparc

On Fri, Oct 24, 2014 at 10:32 AM, David Miller <davem@...emloft.net> wrote:
>
>    It's really idiotic to have a weak symbolled fallback that just
>    returns zero, and causes this kind of bug.  There should be no
>    backup implementation and the link should fail if the architecture
>    fails to provide __get_user_pages_fast() and supports transparent
>    hugepages.

Agreed. I think the weak fallback is for the "no hugepages support"
case, but that does sound very annoying and fragile.

                   Linus
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