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authorCon Kolivas <kernel@kolivas.org>2006-06-23 13:03:42 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 18:42:51 +0400
commitbd96b9eb7cfd6ab24ba244360a09980a720874d2 (patch)
tree9231d56e83f4ef43a6f664c2b416734318b92084 /include
parent30c253e6da655d73eb8bfe2adca9b8f4d82fb81e (diff)
downloadlinux-bd96b9eb7cfd6ab24ba244360a09980a720874d2.tar.xz
[PATCH] mm: fix swap unused warning
If CONFIG_SWAP is not defined we get: mm/vmscan.c: In function ‘remove_mapping’: mm/vmscan.c:387: warning: unused variable ‘swap’ Convert defines in swap.h into blank inline functions to fix this warning and be consistent. Signed-off-by: Con Kolivas <kernel@kolivas.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/swap.h64
1 files changed, 53 insertions, 11 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 1cf234e8df55..f1a827a972e0 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -282,18 +282,60 @@ static inline void disable_swap_token(void)
#define free_pages_and_swap_cache(pages, nr) \
release_pages((pages), (nr), 0);
-#define show_swap_cache_info() /*NOTHING*/
-#define free_swap_and_cache(swp) /*NOTHING*/
-#define swap_duplicate(swp) /*NOTHING*/
-#define swap_free(swp) /*NOTHING*/
-#define read_swap_cache_async(swp,vma,addr) NULL
-#define lookup_swap_cache(swp) NULL
-#define valid_swaphandles(swp, off) 0
+static inline void show_swap_cache_info(void)
+{
+}
+
+static inline void free_swap_and_cache(swp_entry_t swp)
+{
+}
+
+static inline int swap_duplicate(swp_entry_t swp)
+{
+ return 0;
+}
+
+static inline void swap_free(swp_entry_t swp)
+{
+}
+
+static inline struct page *read_swap_cache_async(swp_entry_t swp,
+ struct vm_area_struct *vma, unsigned long addr)
+{
+ return NULL;
+}
+
+static inline struct page *lookup_swap_cache(swp_entry_t swp)
+{
+ return NULL;
+}
+
+static inline int valid_swaphandles(swp_entry_t entry, unsigned long *offset)
+{
+ return 0;
+}
+
#define can_share_swap_page(p) (page_mapcount(p) == 1)
-#define move_to_swap_cache(p, swp) 1
-#define move_from_swap_cache(p, i, m) 1
-#define __delete_from_swap_cache(p) /*NOTHING*/
-#define delete_from_swap_cache(p) /*NOTHING*/
+
+static inline int move_to_swap_cache(struct page *page, swp_entry_t entry)
+{
+ return 1;
+}
+
+static inline int move_from_swap_cache(struct page *page, unsigned long index,
+ struct address_space *mapping)
+{
+ return 1;
+}
+
+static inline void __delete_from_swap_cache(struct page *page)
+{
+}
+
+static inline void delete_from_swap_cache(struct page *page)
+{
+}
+
#define swap_token_default_timeout 0
static inline int remove_exclusive_swap_page(struct page *p)