Commit 03b00ebc authored by Russell King's avatar Russell King Committed by Linus Torvalds
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[PATCH] Shut up warnings in ipc/shm.c

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: default avatarRussell King <>
Cc: Manfred Spraul <>
Cc: Hugh Dickins <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent a94b3ab7
......@@ -634,9 +634,24 @@ struct mempolicy *shmem_get_policy(struct vm_area_struct *vma,
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);
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