frontswap: remove frontswap_test

frontswap_test is unused now, remove it.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Christoph Hellwig <[e-mail]>
Reviewed-by: Juergen Gross <[e-mail]>
Cc: Dan Streetman <[e-mail]>
Cc: Geert Uytterhoeven <[e-mail]>
Cc: Hugh Dickins <[e-mail]>
Cc: Konrad Rzeszutek Wilk <[e-mail]>
Cc: Matthew Wilcox (Oracle) <[e-mail]>
Cc: Seth Jennings <[e-mail]>
Cc: Vitaly Wool <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

include/linux/frontswap.h

···
 
 extern void frontswap_register_ops(struct frontswap_ops *ops);
 
-extern bool __frontswap_test(struct swap_info_struct *, pgoff_t);
 extern void frontswap_init(unsigned type, unsigned long *map);
 extern int __frontswap_store(struct page *page);
 extern int __frontswap_load(struct page *page);
···
 static inline bool frontswap_enabled(void)
 {
 	return static_branch_unlikely(&frontswap_enabled_key);
-}
-
-static inline bool frontswap_test(struct swap_info_struct *sis, pgoff_t offset)
-{
-	return __frontswap_test(sis, offset);
 }
 
 static inline void frontswap_map_set(struct swap_info_struct *p,
···
 /* all inline routines become no-ops and all externs are ignored */
 
 static inline bool frontswap_enabled(void)
-{
-	return false;
-}
-
-static inline bool frontswap_test(struct swap_info_struct *sis, pgoff_t offset)
 {
 	return false;
 }

mm/frontswap.c

···
 		ops->init(type);
 }
 
-bool __frontswap_test(struct swap_info_struct *sis,
+static bool __frontswap_test(struct swap_info_struct *sis,
 				pgoff_t offset)
 {
 	if (sis->frontswap_map)