powerpc/mm: Avoid useless lock with single page fragments

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There is no point in taking the page table lock as pte_frag or
pmd_frag are always NULL when we have only one fragment.

Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Christophe Leroy 2018-11-29 14:06:53 +00:00 • committed by Michael Ellerman

parent a95d133c86

commit 2a146533bf

2 changed files with 6 additions and 0 deletions

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arch/powerpc/mm/pgtable-book3s64.c

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3

arch/powerpc/mm/pgtable-frag.c

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