From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f49.google.com (mail-pa0-f49.google.com [209.85.220.49]) by kanga.kvack.org (Postfix) with ESMTP id 852E56B0038 for ; Wed, 2 Oct 2013 10:29:02 -0400 (EDT) Received: by mail-pa0-f49.google.com with SMTP id ld10so1089033pab.8 for ; Wed, 02 Oct 2013 07:29:02 -0700 (PDT) From: Jan Kara 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> 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 , Timur Tabi 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, 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