cris: switch to get_user_pages_fast() (9a949e8f) · Commits · e / devices / android_kernel_fairphone_FP4

arch/cris/arch-v32/drivers/cryptocop.c

+7 −16

Original line number	Diff line number	Diff line
		@@ -2717,37 +2717,28 @@ static int cryptocop_ioctl_process(struct inode inode, struct file filp, unsig
		}
		}

		/* Acquire the mm page semaphore. */
		down_read(&current->mm->mmap_sem);

		err = get_user_pages((unsigned long int)(oper.indata + prev_ix),
		err = get_user_pages_fast((unsigned long)(oper.indata + prev_ix),
		noinpages,
		0, /* read access only for in data */
		inpages,
		NULL);
		false, /* read access only for in data */
		inpages);

		if (err < 0) {
		up_read(&current->mm->mmap_sem);
		nooutpages = noinpages = 0;
		DEBUG_API(printk("cryptocop_ioctl_process: get_user_pages indata\n"));
		goto error_cleanup;
		}
		noinpages = err;
		if (oper.do_cipher) {
		err = get_user_pages((unsigned long int)oper.cipher_outdata,
		err = get_user_pages_fast((unsigned long)oper.cipher_outdata,
		nooutpages,
		FOLL_WRITE, /* write access for out data */
		outpages,
		NULL);
		up_read(&current->mm->mmap_sem);
		true, /* write access for out data */
		outpages);
		if (err < 0) {
		nooutpages = 0;
		DEBUG_API(printk("cryptocop_ioctl_process: get_user_pages outdata\n"));
		goto error_cleanup;
		}
		nooutpages = err;
		} else {
		up_read(&current->mm->mmap_sem);
		}

		/* Add 6 to nooutpages to make room for possibly inserted buffers for storing digest and