[RFC 03/10] zcache: export zcache interface

[Sasha Levin <levinsasha928@xxxxxxxxx>]

This patch exports the zcache interface to be used from the outside world.

Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx>
---
 drivers/staging/zcache/zcache-main.c |   13 +++++++------
 drivers/staging/zcache/zcache.h      |   17 +++++++++++++++++
 2 files changed, 24 insertions(+), 6 deletions(-)
 create mode 100644 drivers/staging/zcache/zcache.h

diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging/zcache/zcache-main.c
index 784c796..a196aff 100644
--- a/drivers/staging/zcache/zcache-main.c
+++ b/drivers/staging/zcache/zcache-main.c
@@ -32,6 +32,7 @@
 #include <linux/crypto.h>
 #include <linux/string.h>
 #include "tmem.h"
+#include "zcache.h"
 
 #include "../zsmalloc/zsmalloc.h"
 
@@ -1563,7 +1564,7 @@ static struct shrinker zcache_shrinker = {
  * zcache shims between cleancache/frontswap ops and tmem
  */
 
-static int zcache_put_page(int cli_id, int pool_id, struct tmem_oid *oidp,
+int zcache_put_page(int cli_id, int pool_id, struct tmem_oid *oidp,
 				uint32_t index, struct page *page)
 {
 	struct tmem_pool *pool;
@@ -1596,7 +1597,7 @@ out:
 	return ret;
 }
 
-static int zcache_get_page(int cli_id, int pool_id, struct tmem_oid *oidp,
+int zcache_get_page(int cli_id, int pool_id, struct tmem_oid *oidp,
 				uint32_t index, struct page *page)
 {
 	struct tmem_pool *pool;
@@ -1616,7 +1617,7 @@ static int zcache_get_page(int cli_id, int pool_id, struct tmem_oid *oidp,
 	return ret;
 }
 
-static int zcache_flush_page(int cli_id, int pool_id,
+int zcache_flush_page(int cli_id, int pool_id,
 				struct tmem_oid *oidp, uint32_t index)
 {
 	struct tmem_pool *pool;
@@ -1637,7 +1638,7 @@ static int zcache_flush_page(int cli_id, int pool_id,
 	return ret;
 }
 
-static int zcache_flush_object(int cli_id, int pool_id,
+int zcache_flush_object(int cli_id, int pool_id,
 				struct tmem_oid *oidp)
 {
 	struct tmem_pool *pool;
@@ -1658,7 +1659,7 @@ static int zcache_flush_object(int cli_id, int pool_id,
 	return ret;
 }
 
-static int zcache_destroy_pool(int cli_id, int pool_id)
+int zcache_destroy_pool(int cli_id, int pool_id)
 {
 	struct tmem_pool *pool = NULL;
 	struct zcache_client *cli = NULL;
@@ -1941,7 +1942,7 @@ struct frontswap_ops zcache_frontswap_register_ops(void)
  * NOTHING HAPPENS!
  */
 
-static int zcache_enabled;
+int zcache_enabled;
 
 static int __init enable_zcache(char *s)
 {
diff --git a/drivers/staging/zcache/zcache.h b/drivers/staging/zcache/zcache.h
new file mode 100644
index 0000000..ec06ea2
--- /dev/null
+++ b/drivers/staging/zcache/zcache.h
@@ -0,0 +1,17 @@
+#ifndef _ZCACHE_H_
+#define _ZCACHE_H_
+
+extern int zcache_enabled;
+
+extern int zcache_new_pool(uint16_t cli_id, uint32_t flags);
+extern int zcache_destroy_pool(int cli_id, int pool_id);
+extern int zcache_put_page(int cli_id, int pool_id, struct tmem_oid *oidp,
+			uint32_t index, struct page *page);
+extern int zcache_get_page(int cli_id, int pool_id, struct tmem_oid *oidp,
+			uint32_t index, struct page *page);
+extern int zcache_flush_page(int cli_id, int pool_id,
+			struct tmem_oid *oidp, uint32_t index);
+extern int zcache_flush_object(int cli_id, int pool_id,
+			struct tmem_oid *oidp);
+
+#endif
-- 
1.7.8.6

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