From mboxrd@z Thu Jan 1 00:00:00 1970 From: Souptick Joarder Subject: [PATCH v2 0/9] Use vm_insert_range Date: Sun, 2 Dec 2018 11:47:07 +0530 Message-ID: <20181202061707.GA3070@jordon-HP-15-Notebook-PC> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, willy-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, mhocko-IBi9RG/b67k@public.gmane.org, kirill.shutemov-VuQAYsv1563Yd54FQh9/CA@public.gmane.org, vbabka-AlSwsSmVLrQ@public.gmane.org, riel-ebMLmSuQjDVBDgjK7y7TUQ@public.gmane.org, sfr-3FnU+UHB4dNDw9hX6IcOSA@public.gmane.org, rppt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org, peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, linux-I+IVW8TIWO2tmTQ+vhA3Yw@public.gmane.org, robin.murphy-5wv7dgnIgG8@public.gmane.org, iamjoonsoo.kim-Hm3cg6mZ9cc@public.gmane.org, treding-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, keescook-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, stefanr-MtYdepGKPcBMYopoZt5u/LNAH6kLmebB@public.gmane.org, hjc-TNX95d0MmH7DzftRWevZcw@public.gmane.org, heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org, airlied-cv59FeDIM0c@public.gmane.org, oleksandr_andrushchenko-uRwfk40T5oI@public.gmane.org, joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org, pawel-FA/gS7QP4orQT0dZR+AlfA@public.gmane.org, kyungmin.park-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, mchehab-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, boris.ostrovsky-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, jgross-IBi9RG/b67k@public.gmane.org Cc: linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, xen-devel-GuqFBffKawuEi8DpZVb4nw@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux1394-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rockchip.vger.kernel.org Previouly drivers have their own way of mapping range of kernel pages/memory into user vma and this was done by invoking vm_insert_page() within a loop. As this pattern is common across different drivers, it can be generalized by creating a new function and use it across the drivers. vm_insert_range is the new API which will be used to map a range of kernel memory/pages to user vma. All the applicable places are converted to use new vm_insert_range in this patch series. v1 -> v2: Address review comment on mm/memory.c. Add EXPORT_SYMBOL for vm_insert_range and corrected the documentation part for this API. In drivers/gpu/drm/xen/xen_drm_front_gem.c, replace err with ret as suggested. In drivers/iommu/dma-iommu.c, handle the scenario of partial mmap() of large buffer by passing *pages + vma->vm_pgoff* to vm_insert_range(). Souptick Joarder (9): mm: Introduce new vm_insert_range API arch/arm/mm/dma-mapping.c: Convert to use vm_insert_range drivers/firewire/core-iso.c: Convert to use vm_insert_range drm/rockchip/rockchip_drm_gem.c: Convert to use vm_insert_range drm/xen/xen_drm_front_gem.c: Convert to use vm_insert_range iommu/dma-iommu.c: Convert to use vm_insert_range videobuf2/videobuf2-dma-sg.c: Convert to use vm_insert_range xen/gntdev.c: Convert to use vm_insert_range xen/privcmd-buf.c: Convert to use vm_insert_range arch/arm/mm/dma-mapping.c | 21 +++++-------- drivers/firewire/core-iso.c | 15 ++------- drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 20 ++---------- drivers/gpu/drm/xen/xen_drm_front_gem.c | 20 ++++-------- drivers/iommu/dma-iommu.c | 13 ++------ drivers/media/common/videobuf2/videobuf2-dma-sg.c | 23 +++++--------- drivers/xen/gntdev.c | 11 +++---- drivers/xen/privcmd-buf.c | 8 ++--- include/linux/mm_types.h | 3 ++ mm/memory.c | 38 +++++++++++++++++++++++ mm/nommu.c | 7 +++++ 11 files changed, 81 insertions(+), 98 deletions(-) -- 1.9.1