futex_private_hash_get() is not used outside if its compilation unit.
Make it static.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 kernel/futex/core.c  | 2 +-
 kernel/futex/futex.h | 2 --
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/futex/core.c b/kernel/futex/core.c
index b578a536a4fe2..f184d92ed7264 100644
--- a/kernel/futex/core.c
+++ b/kernel/futex/core.c
@@ -143,7 +143,7 @@ static inline bool futex_key_is_private(union futex_key *key)
 	return !(key->both.offset & (FUT_OFF_INODE | FUT_OFF_MMSHARED));
 }
 
-bool futex_private_hash_get(struct futex_private_hash *fph)
+static bool futex_private_hash_get(struct futex_private_hash *fph)
 {
 	if (fph->immutable)
 		return true;
diff --git a/kernel/futex/futex.h b/kernel/futex/futex.h
index fcd1617212eed..c74eac572acd7 100644
--- a/kernel/futex/futex.h
+++ b/kernel/futex/futex.h
@@ -228,14 +228,12 @@ extern void futex_hash_get(struct futex_hash_bucket *hb);
 extern void futex_hash_put(struct futex_hash_bucket *hb);
 
 extern struct futex_private_hash *futex_private_hash(void);
-extern bool futex_private_hash_get(struct futex_private_hash *fph);
 extern void futex_private_hash_put(struct futex_private_hash *fph);
 
 #else /* !CONFIG_FUTEX_PRIVATE_HASH */
 static inline void futex_hash_get(struct futex_hash_bucket *hb) { }
 static inline void futex_hash_put(struct futex_hash_bucket *hb) { }
 static inline struct futex_private_hash *futex_private_hash(void) { return NULL; }
-static inline bool futex_private_hash_get(void) { return false; }
 static inline void futex_private_hash_put(struct futex_private_hash *fph) { }
 #endif
 
-- 
2.50.0