49 	de = ei->pde;  in proc_evict_inode()
52 		ei->pde = NULL;  in proc_evict_inode()
75 	ei->pde = NULL;  in proc_alloc_inode()
206 static inline int use_pde(struct proc_dir_entry *pde)  in use_pde()  argument
208 	return likely(atomic_inc_unless_negative(&pde->in_use));  in use_pde()
211 static void unuse_pde(struct proc_dir_entry *pde)  in unuse_pde()  argument
213 	if (unlikely(atomic_dec_return(&pde->in_use) == BIAS))  in unuse_pde()
214 		complete(pde->pde_unload_completion);  in unuse_pde()
218 static void close_pdeo(struct proc_dir_entry *pde, struct pde_opener *pdeo)  in close_pdeo()  argument
219 	__releases(&pde->pde_unload_lock)  in close_pdeo()
235 		spin_unlock(&pde->pde_unload_lock);  in close_pdeo()
242 		spin_unlock(&pde->pde_unload_lock);  in close_pdeo()
244 		pde->proc_ops->proc_release(file_inode(file), file);  in close_pdeo()
245 		spin_lock(&pde->pde_unload_lock);  in close_pdeo()
249 		spin_unlock(&pde->pde_unload_lock);  in close_pdeo()
278 	struct proc_dir_entry *pde = PDE(file_inode(file));  in proc_reg_llseek()  local
281 	if (pde_is_permanent(pde)) {  in proc_reg_llseek()
282 		return pde->proc_ops->proc_lseek(file, offset, whence);  in proc_reg_llseek()
283 	} else if (use_pde(pde)) {  in proc_reg_llseek()
284 		rv = pde->proc_ops->proc_lseek(file, offset, whence);  in proc_reg_llseek()
285 		unuse_pde(pde);  in proc_reg_llseek()
292 	struct proc_dir_entry *pde = PDE(file_inode(iocb->ki_filp));  in proc_reg_read_iter()  local
295 	if (pde_is_permanent(pde))  in proc_reg_read_iter()
296 		return pde->proc_ops->proc_read_iter(iocb, iter);  in proc_reg_read_iter()
298 	if (!use_pde(pde))  in proc_reg_read_iter()
300 	ret = pde->proc_ops->proc_read_iter(iocb, iter);  in proc_reg_read_iter()
301 	unuse_pde(pde);  in proc_reg_read_iter()
305 static ssize_t pde_read(struct proc_dir_entry *pde, struct file *file, char __user *buf, size_t cou…  in pde_read()  argument
309 	read = pde->proc_ops->proc_read;  in pde_read()
317 	struct proc_dir_entry *pde = PDE(file_inode(file));  in proc_reg_read()  local
320 	if (pde_is_permanent(pde)) {  in proc_reg_read()
321 		return pde_read(pde, file, buf, count, ppos);  in proc_reg_read()
322 	} else if (use_pde(pde)) {  in proc_reg_read()
323 		rv = pde_read(pde, file, buf, count, ppos);  in proc_reg_read()
324 		unuse_pde(pde);  in proc_reg_read()
329 static ssize_t pde_write(struct proc_dir_entry *pde, struct file *file, const char __user *buf, siz…  in pde_write()  argument
333 	write = pde->proc_ops->proc_write;  in pde_write()
341 	struct proc_dir_entry *pde = PDE(file_inode(file));  in proc_reg_write()  local
344 	if (pde_is_permanent(pde)) {  in proc_reg_write()
345 		return pde_write(pde, file, buf, count, ppos);  in proc_reg_write()
346 	} else if (use_pde(pde)) {  in proc_reg_write()
347 		rv = pde_write(pde, file, buf, count, ppos);  in proc_reg_write()
348 		unuse_pde(pde);  in proc_reg_write()
353 static __poll_t pde_poll(struct proc_dir_entry *pde, struct file *file, struct poll_table_struct *p…  in pde_poll()  argument
357 	poll = pde->proc_ops->proc_poll;  in pde_poll()
365 	struct proc_dir_entry *pde = PDE(file_inode(file));  in proc_reg_poll()  local
368 	if (pde_is_permanent(pde)) {  in proc_reg_poll()
369 		return pde_poll(pde, file, pts);  in proc_reg_poll()
370 	} else if (use_pde(pde)) {  in proc_reg_poll()
371 		rv = pde_poll(pde, file, pts);  in proc_reg_poll()
372 		unuse_pde(pde);  in proc_reg_poll()
377 static long pde_ioctl(struct proc_dir_entry *pde, struct file *file, unsigned int cmd, unsigned lon…  in pde_ioctl()  argument
381 	ioctl = pde->proc_ops->proc_ioctl;  in pde_ioctl()
389 	struct proc_dir_entry *pde = PDE(file_inode(file));  in proc_reg_unlocked_ioctl()  local
392 	if (pde_is_permanent(pde)) {  in proc_reg_unlocked_ioctl()
393 		return pde_ioctl(pde, file, cmd, arg);  in proc_reg_unlocked_ioctl()
394 	} else if (use_pde(pde)) {  in proc_reg_unlocked_ioctl()
395 		rv = pde_ioctl(pde, file, cmd, arg);  in proc_reg_unlocked_ioctl()
396 		unuse_pde(pde);  in proc_reg_unlocked_ioctl()
402 static long pde_compat_ioctl(struct proc_dir_entry *pde, struct file *file, unsigned int cmd, unsig…  in pde_compat_ioctl()  argument
406 	compat_ioctl = pde->proc_ops->proc_compat_ioctl;  in pde_compat_ioctl()
414 	struct proc_dir_entry *pde = PDE(file_inode(file));  in proc_reg_compat_ioctl()  local
416 	if (pde_is_permanent(pde)) {  in proc_reg_compat_ioctl()
417 		return pde_compat_ioctl(pde, file, cmd, arg);  in proc_reg_compat_ioctl()
418 	} else if (use_pde(pde)) {  in proc_reg_compat_ioctl()
419 		rv = pde_compat_ioctl(pde, file, cmd, arg);  in proc_reg_compat_ioctl()
420 		unuse_pde(pde);  in proc_reg_compat_ioctl()
426 static int pde_mmap(struct proc_dir_entry *pde, struct file *file, struct vm_area_struct *vma)  in pde_mmap()  argument
430 	mmap = pde->proc_ops->proc_mmap;  in pde_mmap()
438 	struct proc_dir_entry *pde = PDE(file_inode(file));  in proc_reg_mmap()  local
441 	if (pde_is_permanent(pde)) {  in proc_reg_mmap()
442 		return pde_mmap(pde, file, vma);  in proc_reg_mmap()
443 	} else if (use_pde(pde)) {  in proc_reg_mmap()
444 		rv = pde_mmap(pde, file, vma);  in proc_reg_mmap()
445 		unuse_pde(pde);  in proc_reg_mmap()
451 pde_get_unmapped_area(struct proc_dir_entry *pde, struct file *file, unsigned long orig_addr,  in pde_get_unmapped_area()  argument
457 	get_area = pde->proc_ops->proc_get_unmapped_area;  in pde_get_unmapped_area()
472 	struct proc_dir_entry *pde = PDE(file_inode(file));  in proc_reg_get_unmapped_area()  local
475 	if (pde_is_permanent(pde)) {  in proc_reg_get_unmapped_area()
476 		return pde_get_unmapped_area(pde, file, orig_addr, len, pgoff, flags);  in proc_reg_get_unmapped_area()
477 	} else if (use_pde(pde)) {  in proc_reg_get_unmapped_area()
478 		rv = pde_get_unmapped_area(pde, file, orig_addr, len, pgoff, flags);  in proc_reg_get_unmapped_area()
479 		unuse_pde(pde);  in proc_reg_get_unmapped_area()
486 	struct proc_dir_entry *pde = PDE(inode);  in proc_reg_open()  local
492 	if (pde_is_permanent(pde)) {  in proc_reg_open()
493 		open = pde->proc_ops->proc_open;  in proc_reg_open()
510 	if (!use_pde(pde))  in proc_reg_open()
513 	release = pde->proc_ops->proc_release;  in proc_reg_open()
522 	open = pde->proc_ops->proc_open;  in proc_reg_open()
532 			spin_lock(&pde->pde_unload_lock);  in proc_reg_open()
533 			list_add(&pdeo->lh, &pde->pde_openers);  in proc_reg_open()
534 			spin_unlock(&pde->pde_unload_lock);  in proc_reg_open()
540 	unuse_pde(pde);  in proc_reg_open()
546 	struct proc_dir_entry *pde = PDE(inode);  in proc_reg_release()  local
549 	if (pde_is_permanent(pde)) {  in proc_reg_release()
552 		release = pde->proc_ops->proc_release;  in proc_reg_release()
559 	spin_lock(&pde->pde_unload_lock);  in proc_reg_release()
560 	list_for_each_entry(pdeo, &pde->pde_openers, lh) {  in proc_reg_release()
562 			close_pdeo(pde, pdeo);  in proc_reg_release()
566 	spin_unlock(&pde->pde_unload_lock);  in proc_reg_release()
633 	struct proc_dir_entry *pde = PDE(inode);  in proc_get_link()  local
634 	if (!use_pde(pde))  in proc_get_link()
636 	set_delayed_call(done, proc_put_link, pde);  in proc_get_link()
637 	return pde->data;  in proc_get_link()
655 	PROC_I(inode)->pde = de;  in proc_get_inode()