From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pb0-f54.google.com (mail-pb0-f54.google.com [209.85.160.54]) by kanga.kvack.org (Postfix) with ESMTP id AD9B26B003D for ; Wed, 2 Oct 2013 10:29:03 -0400 (EDT) Received: by mail-pb0-f54.google.com with SMTP id ro12so958851pbb.27 for ; Wed, 02 Oct 2013 07:29:03 -0700 (PDT) From: Jan Kara 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> In-Reply-To: <1380724087-13927-1-git-send-email-jack@suse.cz> References: <1380724087-13927-1-git-send-email-jack@suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: LKML Cc: linux-mm@kvack.org, Jan Kara , Greg Kroah-Hartman 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org