1 files changed, 2 insertions, 81 deletions

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 805a10b41266..5bf832f9c05c 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -36,7 +36,6 @@
 #include <linux/types.h>
 #include <linux/debugfs.h>
 #include <linux/zsmalloc.h>
-#include <linux/zpool.h>
 #include <linux/fs.h>
 #include <linux/workqueue.h>
 #include "zpdesc.h"
@@ -433,78 +432,6 @@ static void record_obj(unsigned long handle, unsigned long obj)
 	*(unsigned long *)handle = obj;
 }
 
-/* zpool driver */
-
-#ifdef CONFIG_ZPOOL
-
-static void *zs_zpool_create(const char *name, gfp_t gfp)
-{
-	/*
-	 * Ignore global gfp flags: zs_malloc() may be invoked from
-	 * different contexts and its caller must provide a valid
-	 * gfp mask.
-	 */
-	return zs_create_pool(name);
-}
-
-static void zs_zpool_destroy(void *pool)
-{
-	zs_destroy_pool(pool);
-}
-
-static int zs_zpool_malloc(void *pool, size_t size, gfp_t gfp,
-			   unsigned long *handle, const int nid)
-{
-	*handle = zs_malloc(pool, size, gfp, nid);
-
-	if (IS_ERR_VALUE(*handle))
-		return PTR_ERR((void *)*handle);
-	return 0;
-}
-static void zs_zpool_free(void *pool, unsigned long handle)
-{
-	zs_free(pool, handle);
-}
-
-static void *zs_zpool_obj_read_begin(void *pool, unsigned long handle,
-				     void *local_copy)
-{
-	return zs_obj_read_begin(pool, handle, local_copy);
-}
-
-static void zs_zpool_obj_read_end(void *pool, unsigned long handle,
-				  void *handle_mem)
-{
-	zs_obj_read_end(pool, handle, handle_mem);
-}
-
-static void zs_zpool_obj_write(void *pool, unsigned long handle,
-			       void *handle_mem, size_t mem_len)
-{
-	zs_obj_write(pool, handle, handle_mem, mem_len);
-}
-
-static u64 zs_zpool_total_pages(void *pool)
-{
-	return zs_get_total_pages(pool);
-}
-
-static struct zpool_driver zs_zpool_driver = {
-	.type =			  "zsmalloc",
-	.owner =		  THIS_MODULE,
-	.create =		  zs_zpool_create,
-	.destroy =		  zs_zpool_destroy,
-	.malloc =		  zs_zpool_malloc,
-	.free =			  zs_zpool_free,
-	.obj_read_begin =	  zs_zpool_obj_read_begin,
-	.obj_read_end  =	  zs_zpool_obj_read_end,
-	.obj_write =		  zs_zpool_obj_write,
-	.total_pages =		  zs_zpool_total_pages,
-};
-
-MODULE_ALIAS("zpool-zsmalloc");
-#endif /* CONFIG_ZPOOL */
-
 static inline bool __maybe_unused is_first_zpdesc(struct zpdesc *zpdesc)
 {
 	return PagePrivate(zpdesc_page(zpdesc));
@@ -1746,7 +1673,7 @@ static int zs_page_migrate(struct page *newpage, struct page *page,
 	 * instead.
 	 */
 	if (!zpdesc->zspage)
-		return MIGRATEPAGE_SUCCESS;
+		return 0;
 
 	/* The page is locked, so this pointer must remain valid */
 	zspage = get_zspage(zpdesc);
@@ -1813,7 +1740,7 @@ static int zs_page_migrate(struct page *newpage, struct page *page,
 	reset_zpdesc(zpdesc);
 	zpdesc_put(zpdesc);
 
-	return MIGRATEPAGE_SUCCESS;
+	return 0;
 }
 
 static void zs_page_putback(struct page *page)
@@ -2248,9 +2175,6 @@ static int __init zs_init(void)
 {
 	int rc __maybe_unused;
 
-#ifdef CONFIG_ZPOOL
-	zpool_register_driver(&zs_zpool_driver);
-#endif
 #ifdef CONFIG_COMPACTION
 	rc = set_movable_ops(&zsmalloc_mops, PGTY_zsmalloc);
 	if (rc)
@@ -2262,9 +2186,6 @@ static int __init zs_init(void)
 
 static void __exit zs_exit(void)
 {
-#ifdef CONFIG_ZPOOL
-	zpool_unregister_driver(&zs_zpool_driver);
-#endif
 #ifdef CONFIG_COMPACTION
 	set_movable_ops(NULL, PGTY_zsmalloc);
 #endif