Outline and export get_page_tag_ref() and put_page_tag_ref() so that
modules can use them without exporting page_ext_get() and page_ext_put().
Fixes: dcfe378c81f7 ("lib: introduce support for page allocation tagging")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202407080044.DWMC9N9I-lkp@xxxxxxxxx/
Suggested-by: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>
---
include/linux/pgalloc_tag.h | 23 +++--------------------
lib/alloc_tag.c | 23 +++++++++++++++++++++++
2 files changed, 26 insertions(+), 20 deletions(-)
diff --git a/include/linux/pgalloc_tag.h b/include/linux/pgalloc_tag.h
index 9cacadbd61f8..3c6ab717bd57 100644
--- a/include/linux/pgalloc_tag.h
+++ b/include/linux/pgalloc_tag.h
@@ -13,6 +13,9 @@
extern struct page_ext_operations page_alloc_tagging_ops;
+union codetag_ref *get_page_tag_ref(struct page *page);
+void put_page_tag_ref(union codetag_ref *ref);
+
static inline union codetag_ref *codetag_ref_from_page_ext(struct page_ext *page_ext)
{
return (void *)page_ext + page_alloc_tagging_ops.offset;
@@ -23,26 +26,6 @@ static inline struct page_ext *page_ext_from_codetag_ref(union codetag_ref *ref)
return (void *)ref - page_alloc_tagging_ops.offset;
}
-/* Should be called only if mem_alloc_profiling_enabled() */
-static inline union codetag_ref *get_page_tag_ref(struct page *page)
-{
- if (page) {
- struct page_ext *page_ext = page_ext_get(page);
-
- if (page_ext)
- return codetag_ref_from_page_ext(page_ext);
- }
- return NULL;
-}
-
-static inline void put_page_tag_ref(union codetag_ref *ref)
-{
- if (WARN_ON(!ref))
- return;
-
- page_ext_put(page_ext_from_codetag_ref(ref));
-}
-
static inline void pgalloc_tag_add(struct page *page, struct task_struct *task,
unsigned int nr)
{
diff --git a/lib/alloc_tag.c b/lib/alloc_tag.c
index 832f79a32b3e..5271cc070901 100644
--- a/lib/alloc_tag.c
+++ b/lib/alloc_tag.c
@@ -4,6 +4,7 @@
#include <linux/gfp.h>
#include <linux/module.h>
#include <linux/page_ext.h>
+#include <linux/pgalloc_tag.h>
#include <linux/proc_fs.h>
#include <linux/seq_buf.h>
#include <linux/seq_file.h>
@@ -22,6 +23,28 @@ struct allocinfo_private {
bool print_header;
};
+/* Should be called only if mem_alloc_profiling_enabled() */
+union codetag_ref *get_page_tag_ref(struct page *page)
+{
+ if (page) {
+ struct page_ext *page_ext = page_ext_get(page);
+
+ if (page_ext)
+ return codetag_ref_from_page_ext(page_ext);
+ }
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(get_page_tag_ref);
+
+void put_page_tag_ref(union codetag_ref *ref)
+{
+ if (WARN_ON(!ref))
+ return;
+
+ page_ext_put(page_ext_from_codetag_ref(ref));
+}
+EXPORT_SYMBOL_GPL(put_page_tag_ref);
+
static void *allocinfo_start(struct seq_file *m, loff_t *pos)
{
struct allocinfo_private *priv;
--
2.45.2.993.g49e7a77208-goog
