powerpc/mm: Drop PTE_ATOMIC_UPDATES from pmd_hugepage_update()

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pmd_hugepage_update() is inside #ifdef CONFIG_TRANSPARENT_HUGEPAGE. THP
can only be enabled if PPC_BOOK3S_64=y && PPC_64K_PAGES=y, aka. hash64.

On hash64 we always define PTE_ATOMIC_UPDATES to 1, meaning the #ifdef
in pmd_hugepage_update() is unnecessary, so drop it.

That is also the only use of PTE_ATOMIC_UPDATES in any of the hash code,
meaning we no longer need to #define it at all in the hash headers.

Note it's still #defined and used in the nohash code.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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This commit is contained in:

Aneesh Kumar K.V 2016-04-29 23:25:26 +10:00 • committed by Michael Ellerman

parent 670eea9241

commit 4bece39b50

3 changed files with 1 additions and 10 deletions

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3

arch/powerpc/include/asm/book3s/32/hash.h

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2

arch/powerpc/include/asm/book3s/64/hash.h

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6

arch/powerpc/mm/pgtable_64.c

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