37 static inline int is_dma_buf_file(struct file *);
46 static int dma_buf_release(struct inode *inode, struct file *file)  in dma_buf_release()  argument
50 	if (!is_dma_buf_file(file))  in dma_buf_release()
53 	dmabuf = file->private_data;  in dma_buf_release()
81 static int dma_buf_mmap_internal(struct file *file, struct vm_area_struct *vma)  in dma_buf_mmap_internal()  argument
85 	if (!is_dma_buf_file(file))  in dma_buf_mmap_internal()
88 	dmabuf = file->private_data;  in dma_buf_mmap_internal()
98 static loff_t dma_buf_llseek(struct file *file, loff_t offset, int whence)  in dma_buf_llseek()  argument
103 	if (!is_dma_buf_file(file))  in dma_buf_llseek()
106 	dmabuf = file->private_data;  in dma_buf_llseek()
135 static unsigned int dma_buf_poll(struct file *file, poll_table *poll)  in dma_buf_poll()  argument
144 	dmabuf = file->private_data;  in dma_buf_poll()
150 	poll_wait(file, &dmabuf->poll, poll);  in dma_buf_poll()
264 static inline int is_dma_buf_file(struct file *file)  in is_dma_buf_file()  argument
266 	return file->f_op == &dma_buf_fops;  in is_dma_buf_file()
288 	struct file *file;  in dma_buf_export()  local
332 	file = anon_inode_getfile("dmabuf", &dma_buf_fops, dmabuf,  in dma_buf_export()
334 	if (IS_ERR(file)) {  in dma_buf_export()
336 		return ERR_CAST(file);  in dma_buf_export()
339 	file->f_mode |= FMODE_LSEEK;  in dma_buf_export()
340 	dmabuf->file = file;  in dma_buf_export()
364 	if (!dmabuf || !dmabuf->file)  in dma_buf_fd()
371 	fd_install(fd, dmabuf->file);  in dma_buf_fd()
387 	struct file *file;  in dma_buf_get()  local
389 	file = fget(fd);  in dma_buf_get()
391 	if (!file)  in dma_buf_get()
394 	if (!is_dma_buf_file(file)) {  in dma_buf_get()
395 		fput(file);  in dma_buf_get()
399 	return file->private_data;  in dma_buf_get()
411 	if (WARN_ON(!dmabuf || !dmabuf->file))  in dma_buf_put()
414 	fput(dmabuf->file);  in dma_buf_put()
674 	struct file *oldfile;  in dma_buf_mmap()
690 	get_file(dmabuf->file);  in dma_buf_mmap()
692 	vma->vm_file = dmabuf->file;  in dma_buf_mmap()
699 		fput(dmabuf->file);  in dma_buf_mmap()
808 				buf_obj->file->f_flags, buf_obj->file->f_mode,  in dma_buf_describe()
809 				file_count(buf_obj->file),  in dma_buf_describe()
844 static int dma_buf_debug_open(struct inode *inode, struct file *file)  in dma_buf_debug_open()  argument
846 	return single_open(file, dma_buf_show, inode->i_private);  in dma_buf_debug_open()