powerpc: pmd_move_must_withdraw() is only needed for CONFIG_TRANSPARE…

…NT_HUGEPAGE This is required for the later patch "Makefile.extrawarn: turn on missing-prototypes globally". Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Stephen Rothwell <[email protected]> Acked-by: Michael Ellerman <[email protected]> Cc: Arnd Bergmann <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
norov · Dec 11, 2023 · bfc4372 · bfc4372
1 parent 0025aa9
commit bfc4372
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c
@@ -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);
 }
 
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
 /*
  * 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
@@ -563,6 +564,7 @@ int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
 
 	return true;
 }
+#endif
 
 /*
  * Does the CPU support tlbie?