From: John Hubbard <jhubbard@nvidia.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Michal Hocko" <mhocko@suse.com>, "Jan Kara" <jack@suse.cz>,
kvm@vger.kernel.org, linux-doc@vger.kernel.org,
"David Airlie" <airlied@linux.ie>,
"Dave Chinner" <david@fromorbit.com>,
dri-devel@lists.freedesktop.org,
LKML <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, "Paul Mackerras" <paulus@samba.org>,
linux-kselftest@vger.kernel.org,
"Ira Weiny" <ira.weiny@intel.com>,
"Jonathan Corbet" <corbet@lwn.net>,
linux-rdma@vger.kernel.org,
"Christoph Hellwig" <hch@infradead.org>,
"Jason Gunthorpe" <jgg@ziepe.ca>,
"Vlastimil Babka" <vbabka@suse.cz>,
"Björn Töpel" <bjorn.topel@intel.com>,
linux-media@vger.kernel.org, "Shuah Khan" <shuah@kernel.org>,
"John Hubbard" <jhubbard@nvidia.com>,
linux-block@vger.kernel.org, "Jérôme Glisse" <jglisse@redhat.com>,
"Al Viro" <viro@zeniv.linux.org.uk>,
"Dan Williams" <dan.j.williams@intel.com>,
"Mauro Carvalho Chehab" <mchehab@kernel.org>,
"Magnus Karlsson" <magnus.karlsson@intel.com>,
"Jens Axboe" <axboe@kernel.dk>,
netdev@vger.kernel.org,
"Alex Williamson" <alex.williamson@redhat.com>,
"Daniel Vetter" <daniel@ffwll.ch>,
linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org,
"David S . Miller" <davem@davemloft.net>,
"Mike Kravetz" <mike.kravetz@oracle.com>
Subject: [PATCH v5 15/24] fs/io_uring: set FOLL_PIN via pin_user_pages()
Date: Thu, 14 Nov 2019 21:53:31 -0800 [thread overview]
Message-ID: <20191115055340.1825745-16-jhubbard@nvidia.com> (raw)
In-Reply-To: <20191115055340.1825745-1-jhubbard@nvidia.com>
Convert fs/io_uring to use the new pin_user_pages() call, which sets
FOLL_PIN. Setting FOLL_PIN is now required for code that requires
tracking of pinned pages, and therefore for any code that calls
put_user_page().
In partial anticipation of this work, the io_uring code was already
calling put_user_page() instead of put_page(). Therefore, in order to
convert from the get_user_pages()/put_page() model, to the
pin_user_pages()/put_user_page() model, the only change required
here is to change get_user_pages() to pin_user_pages().
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
fs/io_uring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index f9a38998f2fc..cff64bd00db9 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3433,7 +3433,7 @@ static int io_sqe_buffer_register(struct io_ring_ctx *ctx, void __user *arg,
ret = 0;
down_read(¤t->mm->mmap_sem);
- pret = get_user_pages(ubuf, nr_pages,
+ pret = pin_user_pages(ubuf, nr_pages,
FOLL_WRITE | FOLL_LONGTERM,
pages, vmas);
if (pret == nr_pages) {
--
2.24.0
next prev parent reply other threads:[~2019-11-15 6:40 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-15 5:53 [PATCH v5 00/24] mm/gup: track dma-pinned pages: FOLL_PIN John Hubbard
2019-11-15 5:53 ` [PATCH v5 01/24] mm/gup: pass flags arg to __gup_device_* functions John Hubbard
2019-11-15 5:53 ` [PATCH v5 02/24] mm/gup: factor out duplicate code from four routines John Hubbard
2019-11-18 9:46 ` Jan Kara
2019-11-19 7:00 ` John Hubbard
2019-11-15 5:53 ` [PATCH v5 03/24] mm/gup: move try_get_compound_head() to top, fix minor issues John Hubbard
2019-11-15 5:53 ` [PATCH v5 04/24] mm: Cleanup __put_devmap_managed_page() vs ->page_free() John Hubbard
2019-11-15 5:53 ` [PATCH v5 05/24] mm: devmap: refactor 1-based refcounting for ZONE_DEVICE pages John Hubbard
2019-11-15 5:53 ` [PATCH v5 06/24] goldish_pipe: rename local pin_user_pages() routine John Hubbard
2019-11-18 9:47 ` Jan Kara
2019-11-15 5:53 ` [PATCH v5 07/24] IB/umem: use get_user_pages_fast() to pin DMA pages John Hubbard
2019-11-18 9:49 ` Jan Kara
2019-11-15 5:53 ` [PATCH v5 08/24] media/v4l2-core: set pages dirty upon releasing DMA buffers John Hubbard
2019-11-15 5:53 ` [PATCH v5 09/24] vfio, mm: fix get_user_pages_remote() and FOLL_LONGTERM John Hubbard
2019-11-15 14:08 ` Jason Gunthorpe
2019-11-15 18:06 ` Ira Weiny
2019-11-15 5:53 ` [PATCH v5 10/24] mm/gup: introduce pin_user_pages*() and FOLL_PIN John Hubbard
2019-11-18 10:16 ` Jan Kara
2019-11-19 5:17 ` John Hubbard
2019-11-15 5:53 ` [PATCH v5 11/24] goldish_pipe: convert to pin_user_pages() and put_user_page() John Hubbard
2019-11-18 10:16 ` Jan Kara
2019-11-15 5:53 ` [PATCH v5 12/24] IB/{core, hw, umem}: set FOLL_PIN via pin_user_pages*(), fix up ODP John Hubbard
2019-11-15 14:09 ` [PATCH v5 12/24] IB/{core,hw,umem}: " Jason Gunthorpe
2019-11-15 5:53 ` [PATCH v5 13/24] mm/process_vm_access: set FOLL_PIN via pin_user_pages_remote() John Hubbard
2019-11-18 10:30 ` Jan Kara
2019-11-15 5:53 ` [PATCH v5 14/24] drm/via: set FOLL_PIN via pin_user_pages_fast() John Hubbard
2019-11-15 5:53 ` John Hubbard [this message]
2019-11-18 10:34 ` [PATCH v5 15/24] fs/io_uring: set FOLL_PIN via pin_user_pages() Jan Kara
2019-11-15 5:53 ` [PATCH v5 16/24] net/xdp: " John Hubbard
2019-11-15 5:53 ` [PATCH v5 17/24] mm/gup: track FOLL_PIN pages John Hubbard
2019-11-18 11:58 ` Jan Kara
2019-11-19 0:22 ` John Hubbard
2019-11-15 5:53 ` [PATCH v5 18/24] media/v4l2-core: pin_user_pages (FOLL_PIN) and put_user_page() conversion John Hubbard
2019-11-15 5:53 ` [PATCH v5 19/24] vfio, mm: " John Hubbard
2019-11-15 5:53 ` [PATCH v5 20/24] powerpc: book3s64: convert to pin_user_pages() and put_user_page() John Hubbard
2019-11-15 5:53 ` [PATCH v5 21/24] mm/gup_benchmark: use proper FOLL_WRITE flags instead of hard-coding "1" John Hubbard
2019-11-15 5:53 ` [PATCH v5 22/24] mm/gup_benchmark: support pin_user_pages() and related calls John Hubbard
2019-11-15 5:53 ` [PATCH v5 23/24] selftests/vm: run_vmtests: invoke gup_benchmark with basic FOLL_PIN coverage John Hubbard
2019-11-15 5:53 ` [PATCH v5 24/24] mm, tree-wide: rename put_user_page*() to unpin_user_page*() John Hubbard
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