From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932727Ab3DZKCv (ORCPT ); Fri, 26 Apr 2013 06:02:51 -0400 Received: from metis.ext.pengutronix.de ([92.198.50.35]:55651 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932636Ab3DZKCt (ORCPT ); Fri, 26 Apr 2013 06:02:49 -0400 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= To: "Hans J. Koch" , Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 2/2] uio: drop unused vma_count member in uio_device struct Date: Fri, 26 Apr 2013 12:02:29 +0200 Message-Id: <1366970549-16292-3-git-send-email-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 1.8.2.rc2 In-Reply-To: <1366970549-16292-1-git-send-email-u.kleine-koenig@pengutronix.de> References: <1366970549-16292-1-git-send-email-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 2001:6f8:1178:2:21e:67ff:fe11:9c5c X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org vma_count is used write-only and so fails to be useful. So remove it. Signed-off-by: Uwe Kleine-König --- drivers/uio/uio.c | 16 ---------------- 1 file changed, 16 deletions(-) diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index f9c905a..9591691 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -35,7 +35,6 @@ struct uio_device { atomic_t event; struct fasync_struct *async_queue; wait_queue_head_t wait; - int vma_count; struct uio_info *info; struct kobject *map_dir; struct kobject *portio_dir; @@ -592,18 +591,6 @@ static int uio_find_mem_index(struct vm_area_struct *vma) return -1; } -static void uio_vma_open(struct vm_area_struct *vma) -{ - struct uio_device *idev = vma->vm_private_data; - idev->vma_count++; -} - -static void uio_vma_close(struct vm_area_struct *vma) -{ - struct uio_device *idev = vma->vm_private_data; - idev->vma_count--; -} - static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { struct uio_device *idev = vma->vm_private_data; @@ -630,8 +617,6 @@ static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) } static const struct vm_operations_struct uio_logical_vm_ops = { - .open = uio_vma_open, - .close = uio_vma_close, .fault = uio_vma_fault, }; @@ -639,7 +624,6 @@ static int uio_mmap_logical(struct vm_area_struct *vma) { vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; vma->vm_ops = &uio_vm_ops; - uio_vma_open(vma); return 0; } -- 1.8.2.rc2