Move some storage key handling functions to headers, since they will be
needed from outside, and they are small, so inlining is acceptable.

Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
---
 arch/s390/kvm/gmap/dat.c | 26 --------------------------
 arch/s390/kvm/gmap/dat.h | 26 ++++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 26 deletions(-)

diff --git a/arch/s390/kvm/gmap/dat.c b/arch/s390/kvm/gmap/dat.c
index ff80d02c9f56..b9507daaf327 100644
--- a/arch/s390/kvm/gmap/dat.c
+++ b/arch/s390/kvm/gmap/dat.c
@@ -159,32 +159,6 @@ bool __must_check dat_crstep_xchg_atomic(union crste *crstep, union crste old, u
 	return cspg_crste(crstep, old, new);
 }
 
-static void dat_set_storage_key_from_pgste(union pte pte, union pgste pgste)
-{
-	union skey nkey = { .acc = pgste.acc, .fp = pgste.fp };
-
-	page_set_storage_key(pte_origin(pte), nkey.skey, 0);
-}
-
-static void dat_move_storage_key(union pte old, union pte new)
-{
-	page_set_storage_key(pte_origin(new), page_get_storage_key(pte_origin(old)), 1);
-}
-
-static union pgste dat_save_storage_key_into_pgste(union pte pte, union pgste pgste)
-{
-	union skey skey;
-
-	skey.skey = page_get_storage_key(pte_origin(pte));
-
-	pgste.acc = skey.acc;
-	pgste.fp = skey.fp;
-	pgste.gr |= skey.r;
-	pgste.gc |= skey.c;
-
-	return pgste;
-}
-
 union pgste __dat_ptep_xchg(union pte *ptep, union pgste pgste, union pte new, gfn_t gfn,
 			    union asce asce, bool uses_skeys)
 {
diff --git a/arch/s390/kvm/gmap/dat.h b/arch/s390/kvm/gmap/dat.h
index 90389d47ba4e..3167543bf2cc 100644
--- a/arch/s390/kvm/gmap/dat.h
+++ b/arch/s390/kvm/gmap/dat.h
@@ -988,4 +988,30 @@ static inline bool crste_is_ucas(union crste crste)
 	return is_pmd(crste) && crste.h.i && crste.h.fc0.tl == 1 && crste.h.fc == 0;
 }
 
+static inline void dat_set_storage_key_from_pgste(union pte pte, union pgste pgste)
+{
+	union skey nkey = { .acc = pgste.acc, .fp = pgste.fp };
+
+	page_set_storage_key(pte_origin(pte), nkey.skey, 0);
+}
+
+static inline void dat_move_storage_key(union pte old, union pte new)
+{
+	page_set_storage_key(pte_origin(new), page_get_storage_key(pte_origin(old)), 1);
+}
+
+static inline union pgste dat_save_storage_key_into_pgste(union pte pte, union pgste pgste)
+{
+	union skey skey;
+
+	skey.skey = page_get_storage_key(pte_origin(pte));
+
+	pgste.acc = skey.acc;
+	pgste.fp = skey.fp;
+	pgste.gr |= skey.r;
+	pgste.gc |= skey.c;
+
+	return pgste;
+}
+
 #endif /* ARCH_KVM_GMAP_DAT_H */
-- 
2.56.0