[PATCH] Shut up warnings in ipc/shm.c

From: Russell King
Date: Mon Nov 21 2005 - 12:15:27 EST

Fix two warnings in ipc/shm.c

ipc/shm.c:122: warning: statement with no effect
ipc/shm.c:560: warning: statement with no effect

by converting the macros to empty inline functions. For safety, let's
do all three. This also has the advantage that typechecking gets
performed even without CONFIG_SHMEM enabled.

Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>

diff --git a/include/linux/mm.h b/include/linux/mm.h
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -651,9 +651,24 @@ struct mempolicy *shmem_get_policy(struc
int shmem_lock(struct file *file, int lock, struct user_struct *user);
#define shmem_nopage filemap_nopage
-#define shmem_lock(a, b, c) ({0;}) /* always in memory, no need to lock */
-#define shmem_set_policy(a, b) (0)
-#define shmem_get_policy(a, b) (NULL)
+static inline int shmem_lock(struct file *file, int lock,
+ struct user_struct *user)
+ return 0;
+static inline int shmem_set_policy(struct vm_area_struct *vma,
+ struct mempolicy *new)
+ return 0;
+static inline struct mempolicy *shmem_get_policy(struct vm_area_struct *vma,
+ unsigned long addr)
+ return NULL;
struct file *shmem_file_setup(char *name, loff_t size, unsigned long flags);

Russell King
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