From c164154f66f0c9b02673f07aa4f044f1d9c70274 Mon Sep 17 00:00:00 2001 From: Lorenzo Stoakes Date: Thu, 13 Oct 2016 01:20:13 +0100 Subject: mm: replace get_user_pages_unlocked() write/force parameters with gup_flags This removes the 'write' and 'force' use from get_user_pages_unlocked() and replaces them with 'gup_flags' to make the use of FOLL_FORCE explicit in callers as use of this flag can result in surprising behaviour (and hence bugs) within the mm subsystem. Signed-off-by: Lorenzo Stoakes Reviewed-by: Jan Kara Acked-by: Michal Hocko Signed-off-by: Linus Torvalds --- drivers/media/pci/ivtv/ivtv-udma.c | 4 ++-- drivers/media/pci/ivtv/ivtv-yuv.c | 5 +++-- 2 files changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/media') diff --git a/drivers/media/pci/ivtv/ivtv-udma.c b/drivers/media/pci/ivtv/ivtv-udma.c index 4769469fe842..2c9232ef7baa 100644 --- a/drivers/media/pci/ivtv/ivtv-udma.c +++ b/drivers/media/pci/ivtv/ivtv-udma.c @@ -124,8 +124,8 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr, } /* Get user pages for DMA Xfer */ - err = get_user_pages_unlocked(user_dma.uaddr, user_dma.page_count, 0, - 1, dma->map); + err = get_user_pages_unlocked(user_dma.uaddr, user_dma.page_count, + dma->map, FOLL_FORCE); if (user_dma.page_count != err) { IVTV_DEBUG_WARN("failed to map user pages, returned %d instead of %d\n", diff --git a/drivers/media/pci/ivtv/ivtv-yuv.c b/drivers/media/pci/ivtv/ivtv-yuv.c index b094054cda6e..f7299d3d8244 100644 --- a/drivers/media/pci/ivtv/ivtv-yuv.c +++ b/drivers/media/pci/ivtv/ivtv-yuv.c @@ -76,11 +76,12 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma, /* Get user pages for DMA Xfer */ y_pages = get_user_pages_unlocked(y_dma.uaddr, - y_dma.page_count, 0, 1, &dma->map[0]); + y_dma.page_count, &dma->map[0], FOLL_FORCE); uv_pages = 0; /* silence gcc. value is set and consumed only if: */ if (y_pages == y_dma.page_count) { uv_pages = get_user_pages_unlocked(uv_dma.uaddr, - uv_dma.page_count, 0, 1, &dma->map[y_pages]); + uv_dma.page_count, &dma->map[y_pages], + FOLL_FORCE); } if (y_pages != y_dma.page_count || uv_pages != uv_dma.page_count) { -- cgit v1.2.3