Re: [PATCH 5/6] mm/gup: Replace ACCESS_ONCE with READ_ONCE for STRICT_MM_TYPECHECKS

[PATCH 1/6] powerpc/mm: Remove duplicate declaration of setbat() · Michael Ellerman <mpe@ellerman.id.au> · 2015-03-25
[PATCH 3/6] powerpc: Make STRICT_MM_TYPECHECKS a config option · Michael Ellerman <mpe@ellerman.id.au> · 2015-03-25
[PATCH 2/6] powerpc/mm: Change setbat() to take a pgprot_t rather than flags · Michael Ellerman <mpe@ellerman.id.au> · 2015-03-25
[PATCH 4/6] powerpc: Fix compile errors with STRICT_MM_TYPECHECKS enabled · Michael Ellerman <mpe@ellerman.id.au> · 2015-03-25
[RFC PATCH 6/6] powerpc: Always enable STRICT_MM_TYPECHECKS · Michael Ellerman <mpe@ellerman.id.au> · 2015-03-25
[PATCH 5/6] mm/gup: Replace ACCESS_ONCE with READ_ONCE for STRICT_MM_TYPECHECKS · Michael Ellerman <mpe@ellerman.id.au> · 2015-03-25
Re: [PATCH 5/6] mm/gup: Replace ACCESS_ONCE with READ_ONCE for STRICT_MM_TYPECHECKS · Christian Borntraeger <hidden> · 2015-03-25
Re: [PATCH 5/6] mm/gup: Replace ACCESS_ONCE with READ_ONCE for STRICT_MM_TYPECHECKS · Michael Ellerman <mpe@ellerman.id.au> · 2015-03-25

From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2015-03-25 09:24:56
Also in: linux-mm, lkml

On Wed, 2015-03-25 at 10:18 +0100, Christian Borntraeger wrote:

Am 25.03.2015 um 10:11 schrieb Michael Ellerman:

quoted

If STRICT_MM_TYPECHECKS is enabled the generic gup code fails to build
because we are using ACCESS_ONCE on non-scalar types.

Convert all uses to READ_ONCE.

There is a similar patch from Jason Low in Andrews patch.

Ah sorry, I didn't think to check.

If that happens in 4.0-rc, we probably want to merge this before 4.0.

My series can wait, it's not urgent. So I'll plan to merge mine once Andrew's
tree has gone into Linus' tree for 4.1.

cheers

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