From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f179.google.com (mail-wi0-f179.google.com [209.85.212.179]) by kanga.kvack.org (Postfix) with ESMTP id BFCC382F6F for ; Tue, 6 Oct 2015 05:24:54 -0400 (EDT) Received: by wicfx3 with SMTP id fx3so156830639wic.1 for ; Tue, 06 Oct 2015 02:24:54 -0700 (PDT) Received: from mx2.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id gw10si22310002wib.123.2015.10.06.02.24.52 for (version=TLS1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 06 Oct 2015 02:24:52 -0700 (PDT) From: Jan Kara Subject: [PATCH 3/7] drm: Convert via driver to use get_user_pages_fast() Date: Tue, 6 Oct 2015 11:24:26 +0200 Message-Id: <1444123470-4932-4-git-send-email-jack@suse.com> In-Reply-To: <1444123470-4932-1-git-send-email-jack@suse.com> References: <1444123470-4932-1-git-send-email-jack@suse.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: Jan Kara , David Airlie , dri-devel@lists.freedesktop.org From: Jan Kara CC: David Airlie CC: dri-devel@lists.freedesktop.org Signed-off-by: Jan Kara --- drivers/gpu/drm/via/via_dmablit.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/via/via_dmablit.c b/drivers/gpu/drm/via/via_dmablit.c index d0cbd5ecd7f0..d71add236e62 100644 --- a/drivers/gpu/drm/via/via_dmablit.c +++ b/drivers/gpu/drm/via/via_dmablit.c @@ -238,14 +238,10 @@ via_lock_all_dma_pages(drm_via_sg_info_t *vsg, drm_via_dmablit_t *xfer) vsg->pages = vzalloc(sizeof(struct page *) * vsg->num_pages); if (NULL == vsg->pages) return -ENOMEM; - down_read(¤t->mm->mmap_sem); - ret = get_user_pages(current, current->mm, - (unsigned long)xfer->mem_addr, - vsg->num_pages, - (vsg->direction == DMA_FROM_DEVICE), - 0, vsg->pages, NULL); - - up_read(¤t->mm->mmap_sem); + ret = get_user_pages_fast((unsigned long)xfer->mem_addr, + vsg->num_pages, + (vsg->direction == DMA_FROM_DEVICE), + vsg->pages); if (ret != vsg->num_pages) { if (ret < 0) return ret; -- 2.1.4 -- 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