101 static void shm_open(struct vm_area_struct *vma);
102 static void shm_close(struct vm_area_struct *vma);
301 static void shm_open(struct vm_area_struct *vma)  in shm_open()  argument
303 	struct file *file = vma->vm_file;  in shm_open()
309 		sfd->vm_ops->open(vma);  in shm_open()
395 static void shm_close(struct vm_area_struct *vma)  in shm_close()  argument
397 	struct file *file = vma->vm_file;  in shm_close()
402 		sfd->vm_ops->close(vma);  in shm_close()
536 	struct file *file = vmf->vma->vm_file;  in shm_fault()
542 static int shm_may_split(struct vm_area_struct *vma, unsigned long addr)  in shm_may_split()  argument
544 	struct file *file = vma->vm_file;  in shm_may_split()
548 		return sfd->vm_ops->may_split(vma, addr);  in shm_may_split()
553 static unsigned long shm_pagesize(struct vm_area_struct *vma)  in shm_pagesize()  argument
555 	struct file *file = vma->vm_file;  in shm_pagesize()
559 		return sfd->vm_ops->pagesize(vma);  in shm_pagesize()
565 static int shm_set_policy(struct vm_area_struct *vma, struct mempolicy *new)  in shm_set_policy()  argument
567 	struct file *file = vma->vm_file;  in shm_set_policy()
572 		err = sfd->vm_ops->set_policy(vma, new);  in shm_set_policy()
576 static struct mempolicy *shm_get_policy(struct vm_area_struct *vma,  in shm_get_policy()  argument
579 	struct file *file = vma->vm_file;  in shm_get_policy()
584 		pol = sfd->vm_ops->get_policy(vma, addr);  in shm_get_policy()
585 	else if (vma->vm_policy)  in shm_get_policy()
586 		pol = vma->vm_policy;  in shm_get_policy()
592 static int shm_mmap(struct file *file, struct vm_area_struct *vma)  in shm_mmap()  argument
606 	ret = call_mmap(sfd->file, vma);  in shm_mmap()
611 	sfd->vm_ops = vma->vm_ops;  in shm_mmap()
615 	vma->vm_ops = &shm_vm_ops;  in shm_mmap()
1734 	struct vm_area_struct *vma;  in ksys_shmdt()  local
1772 	for_each_vma(vmi, vma) {  in ksys_shmdt()
1778 		if ((vma->vm_ops == &shm_vm_ops) &&  in ksys_shmdt()
1779 			(vma->vm_start - addr)/PAGE_SIZE == vma->vm_pgoff) {  in ksys_shmdt()
1787 			file = vma->vm_file;  in ksys_shmdt()
1788 			size = i_size_read(file_inode(vma->vm_file));  in ksys_shmdt()
1789 			do_vma_munmap(&vmi, vma, vma->vm_start, vma->vm_end,  in ksys_shmdt()
1798 			vma = vma_next(&vmi);  in ksys_shmdt()
1809 	while (vma && (loff_t)(vma->vm_end - addr) <= size) {  in ksys_shmdt()
1811 		if ((vma->vm_ops == &shm_vm_ops) &&  in ksys_shmdt()
1812 		    ((vma->vm_start - addr)/PAGE_SIZE == vma->vm_pgoff) &&  in ksys_shmdt()
1813 		    (vma->vm_file == file)) {  in ksys_shmdt()
1814 			do_vma_munmap(&vmi, vma, vma->vm_start, vma->vm_end,  in ksys_shmdt()
1818 		vma = vma_next(&vmi);  in ksys_shmdt()
1822 	vma = vma_lookup(mm, addr);  in ksys_shmdt()
1826 	if (vma && vma->vm_start == addr && vma->vm_ops == &shm_vm_ops) {  in ksys_shmdt()
1827 		do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start, NULL);  in ksys_shmdt()