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-rw-r--r--include/linux/frontswap.h14
1 files changed, 7 insertions, 7 deletions
diff --git a/include/linux/frontswap.h b/include/linux/frontswap.h
index 8293262401de..e65ef959546c 100644
--- a/include/linux/frontswap.h
+++ b/include/linux/frontswap.h
@@ -6,16 +6,16 @@
#include <linux/bitops.h>
struct frontswap_ops {
- void (*init)(unsigned);
- int (*store)(unsigned, pgoff_t, struct page *);
- int (*load)(unsigned, pgoff_t, struct page *);
- void (*invalidate_page)(unsigned, pgoff_t);
- void (*invalidate_area)(unsigned);
+ void (*init)(unsigned); /* this swap type was just swapon'ed */
+ int (*store)(unsigned, pgoff_t, struct page *); /* store a page */
+ int (*load)(unsigned, pgoff_t, struct page *); /* load a page */
+ void (*invalidate_page)(unsigned, pgoff_t); /* page no longer needed */
+ void (*invalidate_area)(unsigned); /* swap type just swapoff'ed */
+ struct frontswap_ops *next; /* private pointer to next ops */
};
extern bool frontswap_enabled;
-extern struct frontswap_ops *
- frontswap_register_ops(struct frontswap_ops *ops);
+extern void frontswap_register_ops(struct frontswap_ops *ops);
extern void frontswap_shrink(unsigned long);
extern unsigned long frontswap_curr_pages(void);
extern void frontswap_writethrough(bool);