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powerpc: pmd_move_must_withdraw() is only needed for CONFIG_TRANSPARENT_HUGEPAGE

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This is required for the later patch "Makefile.extrawarn: turn on
missing-prototypes globally".

Link: https://lkml.kernel.org/r/20231127132809.45c2b398@canb.auug.org.au
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Stephen Rothwell 2023-11-27 13:08:57 +11:00 committed by Andrew Morton
parent 0025aa93d7
commit bfc4372b86
1 changed files with 2 additions and 0 deletions
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2
arch/powerpc/mm/book3s64/pgtable.c
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@ -542,6 +542,7 @@ void ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr,
set_pte_at(vma->vm_mm, addr, ptep, pte); set_pte_at(vma->vm_mm, addr, ptep, pte);
} }
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
/* /*
* For hash translation mode, we use the deposited table to store hash slot * For hash translation mode, we use the deposited table to store hash slot
* information and they are stored at PTRS_PER_PMD offset from related pmd * information and they are stored at PTRS_PER_PMD offset from related pmd
@ -563,6 +564,7 @@ int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
return true; return true;
} }
#endif
/* /*
* Does the CPU support tlbie? * Does the CPU support tlbie?