execmem: move execmem_force_rw() and execmem_restore_rox() before use

to avoid static declarations.

Link: https://lkml.kernel.org/r/20250713071730.4117334-5-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Daniel Gomez <da.gomez@samsung.com>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Petr Pavlu <petr.pavlu@suse.com>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Author: rppt

mm/execmem.c

@@ -137,6 +137,27 @@ static int execmem_set_direct_map_valid(struct vm_struct *vm, bool valid)
 	return err;
 }
 
+static int execmem_force_rw(void *ptr, size_t size)
+{
+	unsigned int nr = PAGE_ALIGN(size) >> PAGE_SHIFT;
+	unsigned long addr = (unsigned long)ptr;
+	int ret;
+
+	ret = set_memory_nx(addr, nr);
+	if (ret)
+		return ret;
+
+	return set_memory_rw(addr, nr);
+}
+
+int execmem_restore_rox(void *ptr, size_t size)
+{
+	unsigned int nr = PAGE_ALIGN(size) >> PAGE_SHIFT;
+	unsigned long addr = (unsigned long)ptr;
+
+	return set_memory_rox(addr, nr);
+}
+
 static void execmem_cache_clean(struct work_struct *work)
 {
 	struct maple_tree *free_areas = &execmem_cache.free_areas;
@@ -328,8 +349,6 @@ static inline void *pending_free_clear(void *ptr)
 	return (void *)((unsigned long)ptr & ~PENDING_FREE_MASK);
 }
 
-static int execmem_force_rw(void *ptr, size_t size);
-
 static int __execmem_cache_free(struct ma_state *mas, void *ptr, gfp_t gfp_mask)
 {
 	size_t size = mas_range_len(mas);
@@ -415,27 +434,6 @@ static bool execmem_cache_free(void *ptr)
 	return true;
 }
 
-static int execmem_force_rw(void *ptr, size_t size)
-{
-	unsigned int nr = PAGE_ALIGN(size) >> PAGE_SHIFT;
-	unsigned long addr = (unsigned long)ptr;
-	int ret;
-
-	ret = set_memory_nx(addr, nr);
-	if (ret)
-		return ret;
-
-	return set_memory_rw(addr, nr);
-}
-
-int execmem_restore_rox(void *ptr, size_t size)
-{
-	unsigned int nr = PAGE_ALIGN(size) >> PAGE_SHIFT;
-	unsigned long addr = (unsigned long)ptr;
-
-	return set_memory_rox(addr, nr);
-}
-
 #else /* CONFIG_ARCH_HAS_EXECMEM_ROX */
 /*
  * when ROX cache is not used the permissions defined by architectures for