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From: "Björn Töpel" <bjorn.topel@intel.com>
To: John Hubbard <jhubbard@nvidia.com>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: "Al Viro" <viro@zeniv.linux.org.uk>,
	"Alex Williamson" <alex.williamson@redhat.com>,
	"Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
	"Christoph Hellwig" <hch@infradead.org>,
	"Dan Williams" <dan.j.williams@intel.com>,
	"Daniel Vetter" <daniel@ffwll.ch>,
	"Dave Chinner" <david@fromorbit.com>,
	"David Airlie" <airlied@linux.ie>,
	"David S . Miller" <davem@davemloft.net>,
	"Ira Weiny" <ira.weiny@intel.com>, "Jan Kara" <jack@suse.cz>,
	"Jason Gunthorpe" <jgg@ziepe.ca>, "Jens Axboe" <axboe@kernel.dk>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Jérôme Glisse" <jglisse@redhat.com>,
	"Magnus Karlsson" <magnus.karlsson@intel.com>,
	"Mauro Carvalho Chehab" <mchehab@kernel.org>,
	"Michael Ellerman" <mpe@ellerman.id.au>,
	"Michal Hocko" <mhocko@suse.com>,
	"Mike Kravetz" <mike.kravetz@oracle.com>,
	"Paul Mackerras" <paulus@samba.org>,
	"Shuah Khan" <shuah@kernel.org>,
	"Vlastimil Babka" <vbabka@suse.cz>,
	bpf@vger.kernel.org, dri-devel@lists.freedesktop.org,
	kvm@vger.kernel.org, linux-block@vger.kernel.org,
	linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-kselftest@vger.kernel.org, linux-media@vger.kernel.org,
	linux-rdma@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	netdev@vger.kernel.org, linux-mm@kvack.org,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 11/19] net/xdp: set FOLL_PIN via pin_user_pages()
Date: Sat, 2 Nov 2019 12:01:43 +0100	[thread overview]
Message-ID: <67cd4960-bc17-9603-8d4d-b7b2f68bb373@intel.com> (raw)
In-Reply-To: <20191030224930.3990755-12-jhubbard@nvidia.com>

On 2019-10-30 23:49, John Hubbard wrote:
> Convert net/xdp to use the new pin_longterm_pages() call, which sets
> FOLL_PIN. Setting FOLL_PIN is now required for code that requires
> tracking of pinned pages.
> 
> Signed-off-by: John Hubbard <jhubbard@nvidia.com>

Acked-by: Björn Töpel <bjorn.topel@intel.com>

> ---
>   net/xdp/xdp_umem.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c
> index 16d5f353163a..4d56dfb1139a 100644
> --- a/net/xdp/xdp_umem.c
> +++ b/net/xdp/xdp_umem.c
> @@ -285,8 +285,8 @@ static int xdp_umem_pin_pages(struct xdp_umem *umem)
>   		return -ENOMEM;
>   
>   	down_read(&current->mm->mmap_sem);
> -	npgs = get_user_pages(umem->address, umem->npgs,
> -			      gup_flags | FOLL_LONGTERM, &umem->pgs[0], NULL);
> +	npgs = pin_longterm_pages(umem->address, umem->npgs, gup_flags,
> +				  &umem->pgs[0], NULL);
>   	up_read(&current->mm->mmap_sem);
>   
>   	if (npgs != umem->npgs) {
> 

  parent reply	other threads:[~2019-11-02 11:02 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-30 22:49 [PATCH 00/19] mm/gup: track dma-pinned pages: FOLL_PIN, FOLL_LONGTERM John Hubbard
2019-10-30 22:49 ` [PATCH 01/19] mm/gup: pass flags arg to __gup_device_* functions John Hubbard
2019-10-31 18:18   ` Ira Weiny
2019-10-30 22:49 ` [PATCH 02/19] mm/gup: factor out duplicate code from four routines John Hubbard
2019-10-31 18:35   ` Ira Weiny
2019-10-31 18:43     ` John Hubbard
2019-10-31 21:09       ` Ira Weiny
2019-10-31 22:01         ` John Hubbard
2019-10-30 22:49 ` [PATCH 03/19] goldish_pipe: rename local pin_user_pages() routine John Hubbard
2019-10-31 18:36   ` Ira Weiny
2019-10-30 22:49 ` [PATCH 04/19] media/v4l2-core: set pages dirty upon releasing DMA buffers John Hubbard
2019-10-30 22:49 ` [PATCH 05/19] mm/gup: introduce pin_user_pages*() and FOLL_PIN John Hubbard
2019-10-31 23:15   ` Ira Weiny
2019-10-31 23:43     ` John Hubbard
2019-10-30 22:49 ` [PATCH 06/19] goldish_pipe: convert to pin_user_pages() and put_user_page() John Hubbard
2019-10-30 22:49 ` [PATCH 07/19] infiniband: set FOLL_PIN, FOLL_LONGTERM via pin_longterm_pages*() John Hubbard
2019-10-31 23:25   ` Ira Weiny
2019-10-31 23:49     ` John Hubbard
2019-10-30 22:49 ` [PATCH 08/19] mm/process_vm_access: set FOLL_PIN via pin_user_pages_remote() John Hubbard
2019-10-31 23:35   ` Ira Weiny
2019-10-31 23:46     ` John Hubbard
2019-10-30 22:49 ` [PATCH 09/19] drm/via: set FOLL_PIN via pin_user_pages_fast() John Hubbard
2019-10-31 23:36   ` Ira Weiny
2019-11-04 18:10     ` Daniel Vetter
2019-11-04 19:20       ` John Hubbard
2019-11-05  9:49         ` Daniel Vetter
2019-11-05 18:16           ` John Hubbard
2019-10-30 22:49 ` [PATCH 10/19] fs/io_uring: set FOLL_PIN via pin_user_pages() John Hubbard
2019-10-31 23:37   ` Ira Weiny
2019-11-01 14:49   ` Jens Axboe
2019-10-30 22:49 ` [PATCH 11/19] net/xdp: " John Hubbard
2019-10-31 23:37   ` Ira Weiny
2019-11-02 11:01   ` Björn Töpel [this message]
2019-10-30 22:49 ` [PATCH 12/19] mm/gup: track FOLL_PIN pages John Hubbard
2019-10-30 22:49 ` [PATCH 13/19] media/v4l2-core: pin_longterm_pages (FOLL_PIN) and put_user_page() conversion John Hubbard
2019-10-31 23:38   ` Ira Weiny
2019-10-30 22:49 ` [PATCH 14/19] vfio, mm: " John Hubbard
2019-10-30 23:05   ` John Hubbard
2019-10-30 22:49 ` [PATCH 15/19] powerpc: book3s64: convert to pin_longterm_pages() and put_user_page() John Hubbard
2019-10-30 22:49 ` [PATCH 16/19] mm/gup_benchmark: support pin_user_pages() and related calls John Hubbard
2019-10-30 22:49 ` [PATCH 17/19] selftests/vm: run_vmtests: invoke gup_benchmark with basic FOLL_PIN coverage John Hubbard
2019-10-30 22:49 ` [PATCH 18/19] mm/gup: remove support for gup(FOLL_LONGTERM) John Hubbard
2019-10-30 22:49 ` [PATCH 19/19] Documentation/vm: add pin_user_pages.rst John Hubbard
2019-10-31 23:49   ` Ira Weiny
2019-10-31 23:53     ` John Hubbard
2019-11-01  0:48     ` John Hubbard
2019-11-03 19:53   ` John Hubbard

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