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Subject[PATCH 4.19 175/276] s390/mm: silence compiler warning when compiling without CONFIG_PGSTE
Date
[ 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>
---
arch/s390/mm/pgtable.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index f2cc7da473e4e..ae894ac83fd61 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -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)
--
2.20.1


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