The vma_policy() define is a helper specifically for a VMA field so it
makes sense to host it in the memory management types header.
The anon_vma_name(), anon_vma_name_alloc() and anon_vma_name_free()
functions are a little out of place in mm_inline.h as they define external
functions, and so it makes sense to locate them in mm_types.h.
The purpose of these relocations is to make it possible to abstract static
inline wrappers which invoke both of these helpers.
Signed-off-by: Lorenzo Stoakes <lstoakes@xxxxxxxxx>
---
include/linux/mempolicy.h | 4 ----
include/linux/mm_inline.h | 20 +-------------------
include/linux/mm_types.h | 27 +++++++++++++++++++++++++++
3 files changed, 28 insertions(+), 23 deletions(-)
diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h
index 3c208d4f0ee9..2801d5b0a4e9 100644
--- a/include/linux/mempolicy.h
+++ b/include/linux/mempolicy.h
@@ -89,8 +89,6 @@ static inline struct mempolicy *mpol_dup(struct mempolicy *pol)
return pol;
}
-#define vma_policy(vma) ((vma)->vm_policy)
-
static inline void mpol_get(struct mempolicy *pol)
{
if (pol)
@@ -222,8 +220,6 @@ static inline struct mempolicy *get_vma_policy(struct vm_area_struct *vma,
return NULL;
}
-#define vma_policy(vma) NULL
-
static inline int
vma_dup_policy(struct vm_area_struct *src, struct vm_area_struct *dst)
{
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index 8148b30a9df1..9ae7def16cb2 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -4,6 +4,7 @@
#include <linux/atomic.h>
#include <linux/huge_mm.h>
+#include <linux/mm_types.h>
#include <linux/swap.h>
#include <linux/string.h>
#include <linux/userfaultfd_k.h>
@@ -352,15 +353,6 @@ void lruvec_del_folio(struct lruvec *lruvec, struct folio *folio)
}
#ifdef CONFIG_ANON_VMA_NAME
-/*
- * mmap_lock should be read-locked when calling anon_vma_name(). Caller should
- * either keep holding the lock while using the returned pointer or it should
- * raise anon_vma_name refcount before releasing the lock.
- */
-extern struct anon_vma_name *anon_vma_name(struct vm_area_struct *vma);
-extern struct anon_vma_name *anon_vma_name_alloc(const char *name);
-extern void anon_vma_name_free(struct kref *kref);
-
/* mmap_lock should be read-locked */
static inline void anon_vma_name_get(struct anon_vma_name *anon_name)
{
@@ -415,16 +407,6 @@ static inline bool anon_vma_name_eq(struct anon_vma_name *anon_name1,
}
#else /* CONFIG_ANON_VMA_NAME */
-static inline struct anon_vma_name *anon_vma_name(struct vm_area_struct *vma)
-{
- return NULL;
-}
-
-static inline struct anon_vma_name *anon_vma_name_alloc(const char *name)
-{
- return NULL;
-}
-
static inline void anon_vma_name_get(struct anon_vma_name *anon_name) {}
static inline void anon_vma_name_put(struct anon_vma_name *anon_name) {}
static inline void dup_anon_vma_name(struct vm_area_struct *orig_vma,
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 36c5b43999e6..21eb56145f57 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -546,6 +546,27 @@ struct anon_vma_name {
char name[];
};
+#ifdef CONFIG_ANON_VMA_NAME
+/*
+ * mmap_lock should be read-locked when calling anon_vma_name(). Caller should
+ * either keep holding the lock while using the returned pointer or it should
+ * raise anon_vma_name refcount before releasing the lock.
+ */
+struct anon_vma_name *anon_vma_name(struct vm_area_struct *vma);
+struct anon_vma_name *anon_vma_name_alloc(const char *name);
+void anon_vma_name_free(struct kref *kref);
+#else /* CONFIG_ANON_VMA_NAME */
+static inline struct anon_vma_name *anon_vma_name(struct vm_area_struct *vma)
+{
+ return NULL;
+}
+
+static inline struct anon_vma_name *anon_vma_name_alloc(const char *name)
+{
+ return NULL;
+}
+#endif
+
struct vma_lock {
struct rw_semaphore lock;
};
@@ -662,6 +683,12 @@ struct vm_area_struct {
struct vm_userfaultfd_ctx vm_userfaultfd_ctx;
} __randomize_layout;
+#ifdef CONFIG_NUMA
+#define vma_policy(vma) ((vma)->vm_policy)
+#else
+#define vma_policy(vma) NULL
+#endif
+
#ifdef CONFIG_SCHED_MM_CID
struct mm_cid {
u64 time;
--
2.42.0
