Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754462Ab3JBOeb (ORCPT ); Wed, 2 Oct 2013 10:34:31 -0400 Received: from cantor2.suse.de ([195.135.220.15]:48996 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753123Ab3JBO26 (ORCPT ); Wed, 2 Oct 2013 10:28:58 -0400 From: Jan Kara To: LKML Cc: linux-mm@kvack.org, Jan Kara , Timur Tabi Subject: [PATCH 13/26] fsl_hypervisor: Convert ioctl_memcpy() to use get_user_pages_fast() Date: Wed, 2 Oct 2013 16:27:54 +0200 Message-Id: <1380724087-13927-14-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 Content-Length: 1308 Lines: 34 CC: Timur Tabi Signed-off-by: Jan Kara --- drivers/virt/fsl_hypervisor.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c index d294f67d6f84..791a46a5dd2a 100644 --- a/drivers/virt/fsl_hypervisor.c +++ b/drivers/virt/fsl_hypervisor.c @@ -242,13 +242,8 @@ static long ioctl_memcpy(struct fsl_hv_ioctl_memcpy __user *p) sg_list = PTR_ALIGN(sg_list_unaligned, sizeof(struct fh_sg_list)); /* Get the physical addresses of the source buffer */ - down_read(¤t->mm->mmap_sem); - num_pinned = get_user_pages(current, current->mm, - param.local_vaddr - lb_offset, num_pages, - (param.source == -1) ? READ : WRITE, - 0, pages, NULL); - up_read(¤t->mm->mmap_sem); - + num_pinned = get_user_pages_fast(param.local_vaddr - lb_offset, + num_pages, (param.source == -1) ? READ : WRITE, pages); if (num_pinned != num_pages) { /* get_user_pages() failed */ pr_debug("fsl-hv: could not lock source buffer\n"); -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/