68 static void shm_open(struct vm_area_struct *vma);
69 static void shm_close(struct vm_area_struct *vma);
190 static int __shm_open(struct vm_area_struct *vma)  in __shm_open()  argument
192 	struct file *file = vma->vm_file;  in __shm_open()
209 static void shm_open(struct vm_area_struct *vma)  in shm_open()  argument
211 	int err = __shm_open(vma);  in shm_open()
269 static void shm_close(struct vm_area_struct *vma)  in shm_close()  argument
271 	struct file *file = vma->vm_file;  in shm_close()
376 static int shm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)  in shm_fault()  argument
378 	struct file *file = vma->vm_file;  in shm_fault()
381 	return sfd->vm_ops->fault(vma, vmf);  in shm_fault()
385 static int shm_set_policy(struct vm_area_struct *vma, struct mempolicy *new)  in shm_set_policy()  argument
387 	struct file *file = vma->vm_file;  in shm_set_policy()
391 		err = sfd->vm_ops->set_policy(vma, new);  in shm_set_policy()
395 static struct mempolicy *shm_get_policy(struct vm_area_struct *vma,  in shm_get_policy()  argument
398 	struct file *file = vma->vm_file;  in shm_get_policy()
403 		pol = sfd->vm_ops->get_policy(vma, addr);  in shm_get_policy()
404 	else if (vma->vm_policy)  in shm_get_policy()
405 		pol = vma->vm_policy;  in shm_get_policy()
411 static int shm_mmap(struct file *file, struct vm_area_struct *vma)  in shm_mmap()  argument
420 	ret =__shm_open(vma);  in shm_mmap()
424 	ret = sfd->file->f_op->mmap(sfd->file, vma);  in shm_mmap()
426 		shm_close(vma);  in shm_mmap()
429 	sfd->vm_ops = vma->vm_ops;  in shm_mmap()
433 	vma->vm_ops = &shm_vm_ops;  in shm_mmap()
1262 	struct vm_area_struct *vma;  in SYSCALL_DEFINE1()  local
1297 	vma = find_vma(mm, addr);  in SYSCALL_DEFINE1()
1300 	while (vma) {  in SYSCALL_DEFINE1()
1301 		next = vma->vm_next;  in SYSCALL_DEFINE1()
1308 		if ((vma->vm_ops == &shm_vm_ops) &&  in SYSCALL_DEFINE1()
1309 			(vma->vm_start - addr)/PAGE_SIZE == vma->vm_pgoff) {  in SYSCALL_DEFINE1()
1317 			file = vma->vm_file;  in SYSCALL_DEFINE1()
1318 			size = i_size_read(file_inode(vma->vm_file));  in SYSCALL_DEFINE1()
1319 			do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start);  in SYSCALL_DEFINE1()
1327 			vma = next;  in SYSCALL_DEFINE1()
1330 		vma = next;  in SYSCALL_DEFINE1()
1339 	while (vma && (loff_t)(vma->vm_end - addr) <= size) {  in SYSCALL_DEFINE1()
1340 		next = vma->vm_next;  in SYSCALL_DEFINE1()
1343 		if ((vma->vm_ops == &shm_vm_ops) &&  in SYSCALL_DEFINE1()
1344 		    ((vma->vm_start - addr)/PAGE_SIZE == vma->vm_pgoff) &&  in SYSCALL_DEFINE1()
1345 		    (vma->vm_file == file))  in SYSCALL_DEFINE1()
1346 			do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start);  in SYSCALL_DEFINE1()
1347 		vma = next;  in SYSCALL_DEFINE1()
1353 	if (vma && vma->vm_start == addr && vma->vm_ops == &shm_vm_ops) {  in SYSCALL_DEFINE1()
1354 		do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start);  in SYSCALL_DEFINE1()