Commit c3c61438 authored Apr 07, 2019 by Thomas Huth Committed by Greg Kroah-Hartman May 31, 2019

s390/mm: silence compiler warning when compiling without CONFIG_PGSTE



[ Upstream commit 81a8f2beb32a5951ecf04385301f50879abc092b ]

If CONFIG_PGSTE is not set (e.g. when compiling without KVM), GCC complains:

  CC      arch/s390/mm/pgtable.o
arch/s390/mm/pgtable.c:413:15: warning: ‘pmd_alloc_map’ defined but not
 used [-Wunused-function]
 static pmd_t *pmd_alloc_map(struct mm_struct *mm, unsigned long addr)
               ^~~~~~~~~~~~~

Wrap the function with "#ifdef CONFIG_PGSTE" to silence the warning.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent a07de9b9

arch/s390/mm/pgtable.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -410,6 +410,7 @@ static inline pmd_t pmdp_flush_lazy(struct mm_struct *mm,
		return old;
		}

		#ifdef CONFIG_PGSTE
		static pmd_t pmd_alloc_map(struct mm_struct mm, unsigned long addr)
		{
		pgd_t *pgd;
		@@ -427,6 +428,7 @@ static pmd_t pmd_alloc_map(struct mm_struct mm, unsigned long addr)
		pmd = pmd_alloc(mm, pud, addr);
		return pmd;
		}
		#endif

		pmd_t pmdp_xchg_direct(struct mm_struct *mm, unsigned long addr,
		pmd_t *pmdp, pmd_t new)