From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754531Ab3JBOfi (ORCPT ); Wed, 2 Oct 2013 10:35:38 -0400 Received: from cantor2.suse.de ([195.135.220.15]:48992 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753102Ab3JBO26 (ORCPT ); Wed, 2 Oct 2013 10:28:58 -0400 From: Jan Kara To: LKML Cc: linux-mm@kvack.org, Jan Kara , Greg Kroah-Hartman Subject: [PATCH 08/26] ced1401: Convert driver to use get_user_pages_fast() Date: Wed, 2 Oct 2013 16:27:49 +0200 Message-Id: <1380724087-13927-9-git-send-email-jack@suse.cz> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1380724087-13927-1-git-send-email-jack@suse.cz> References: <1380724087-13927-1-git-send-email-jack@suse.cz> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org CC: Greg Kroah-Hartman Signed-off-by: Jan Kara --- drivers/staging/ced1401/ced_ioc.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/staging/ced1401/ced_ioc.c b/drivers/staging/ced1401/ced_ioc.c index 2dbaf39e2fc2..62efd74b8c04 100644 --- a/drivers/staging/ced1401/ced_ioc.c +++ b/drivers/staging/ced1401/ced_ioc.c @@ -692,10 +692,7 @@ static int SetArea(DEVICE_EXTENSION *pdx, int nArea, char __user *puBuf, __func__, puBuf, dwLength, bCircular); /* To pin down user pages we must first acquire the mapping semaphore. */ - down_read(¤t->mm->mmap_sem); /* get memory map semaphore */ - nPages = get_user_pages(current, current->mm, ulStart, len, 1, 0, - pPages, NULL); - up_read(¤t->mm->mmap_sem); /* release the semaphore */ + nPages = get_user_pages_fast(ulStart, len, 1, pPages); dev_dbg(&pdx->interface->dev, "%s nPages = %d", __func__, nPages); if (nPages > 0) { /* if we succeeded */ -- 1.8.1.4