From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 22 Sep 2017 18:16:11 -0400
Subject: via_dmablit(): use get_user_pages_fast()
Git-commit: a6e0d12fc6fa6e48b51858f4ef1c0469f8036985
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/via/via_dmablit.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/via/via_dmablit.c
+++ b/drivers/gpu/drm/via/via_dmablit.c
@@ -238,9 +238,9 @@ via_lock_all_dma_pages(drm_via_sg_info_t
vsg->pages = vzalloc(sizeof(struct page *) * vsg->num_pages);
if (NULL == vsg->pages)
return -ENOMEM;
- ret = get_user_pages_unlocked((unsigned long)xfer->mem_addr,
- vsg->num_pages, vsg->pages,
- (vsg->direction == DMA_FROM_DEVICE) ? FOLL_WRITE : 0);
+ 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;