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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - include/linux/shm.h
5 #include <uapi/linux/shm.h>
7 #define SHMALL (SHMMAX/PAGE_SIZE*(SHMMNI/16)) /* max shm system wide (pages) */
8 #include <asm/shmparam.h>
9 struct shmid_kernel
/* private to the kernel */
11 struct kern_ipc_perm shm_perm
;
12 struct file
* shm_file
;
13 unsigned long shm_nattch
;
14 unsigned long shm_segsz
;
20 struct user_struct
*mlock_user
;
22 /* The task created the shm object. NULL if the task is dead. */
23 struct task_struct
*shm_creator
;
26 /* shm_mode upper byte flags */
27 #define SHM_DEST 01000 /* segment will be destroyed on last detach */
28 #define SHM_LOCKED 02000 /* segment will not be swapped */
29 #define SHM_HUGETLB 04000 /* segment will use huge TLB pages */
30 #define SHM_NORESERVE 010000 /* don't check for reservations */
33 long do_shmat(int shmid
, char __user
*shmaddr
, int shmflg
, unsigned long *addr
,
34 unsigned long shmlba
);
35 extern int is_file_shm_hugepages(struct file
*file
);
36 extern void exit_shm(struct task_struct
*task
);
38 static inline long do_shmat(int shmid
, char __user
*shmaddr
,
39 int shmflg
, unsigned long *addr
,
44 static inline int is_file_shm_hugepages(struct file
*file
)
48 static inline void exit_shm(struct task_struct
*task
)
53 #endif /* _LINUX_SHM_H_ */