From: John Hubbard <jhubbard@nvidia.com>
To: 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>,
"Björn Töpel" <bjorn.topel@intel.com>,
"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>,
"John Hubbard" <jhubbard@nvidia.com>,
"Jason Gunthorpe" <jgg@mellanox.com>
Subject: [PATCH v9 12/25] IB/{core,hw,umem}: set FOLL_PIN via pin_user_pages*(), fix up ODP
Date: Tue, 10 Dec 2019 18:53:05 -0800 [thread overview]
Message-ID: <20191211025318.457113-13-jhubbard@nvidia.com> (raw)
In-Reply-To: <20191211025318.457113-1-jhubbard@nvidia.com>
Convert infiniband to use the new pin_user_pages*() calls.
Also, revert earlier changes to Infiniband ODP that had it using
put_user_page(). ODP is "Case 3" in
Documentation/core-api/pin_user_pages.rst, which is to say, normal
get_user_pages() and put_page() is the API to use there.
The new pin_user_pages*() calls replace corresponding get_user_pages*()
calls, and set the FOLL_PIN flag. The FOLL_PIN flag requires that the
caller must return the pages via put_user_page*() calls, but infiniband
was already doing that as part of an earlier commit.
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
drivers/infiniband/core/umem.c | 2 +-
drivers/infiniband/core/umem_odp.c | 13 ++++++-------
drivers/infiniband/hw/hfi1/user_pages.c | 2 +-
drivers/infiniband/hw/mthca/mthca_memfree.c | 2 +-
drivers/infiniband/hw/qib/qib_user_pages.c | 2 +-
drivers/infiniband/hw/qib/qib_user_sdma.c | 2 +-
drivers/infiniband/hw/usnic/usnic_uiom.c | 2 +-
drivers/infiniband/sw/siw/siw_mem.c | 2 +-
8 files changed, 13 insertions(+), 14 deletions(-)
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index 214e87aa609d..55daefaa9b88 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -266,7 +266,7 @@ struct ib_umem *ib_umem_get(struct ib_udata *udata, unsigned long addr,
sg = umem->sg_head.sgl;
while (npages) {
- ret = get_user_pages_fast(cur_base,
+ ret = pin_user_pages_fast(cur_base,
min_t(unsigned long, npages,
PAGE_SIZE /
sizeof(struct page *)),
diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c
index e42d44e501fd..abc3bb6578cc 100644
--- a/drivers/infiniband/core/umem_odp.c
+++ b/drivers/infiniband/core/umem_odp.c
@@ -308,9 +308,8 @@ EXPORT_SYMBOL(ib_umem_odp_release);
* The function returns -EFAULT if the DMA mapping operation fails. It returns
* -EAGAIN if a concurrent invalidation prevents us from updating the page.
*
- * The page is released via put_user_page even if the operation failed. For
- * on-demand pinning, the page is released whenever it isn't stored in the
- * umem.
+ * The page is released via put_page even if the operation failed. For on-demand
+ * pinning, the page is released whenever it isn't stored in the umem.
*/
static int ib_umem_odp_map_dma_single_page(
struct ib_umem_odp *umem_odp,
@@ -363,7 +362,7 @@ static int ib_umem_odp_map_dma_single_page(
}
out:
- put_user_page(page);
+ put_page(page);
return ret;
}
@@ -473,7 +472,7 @@ int ib_umem_odp_map_dma_pages(struct ib_umem_odp *umem_odp, u64 user_virt,
ret = -EFAULT;
break;
}
- put_user_page(local_page_list[j]);
+ put_page(local_page_list[j]);
continue;
}
@@ -500,8 +499,8 @@ int ib_umem_odp_map_dma_pages(struct ib_umem_odp *umem_odp, u64 user_virt,
* ib_umem_odp_map_dma_single_page().
*/
if (npages - (j + 1) > 0)
- put_user_pages(&local_page_list[j+1],
- npages - (j + 1));
+ release_pages(&local_page_list[j+1],
+ npages - (j + 1));
break;
}
}
diff --git a/drivers/infiniband/hw/hfi1/user_pages.c b/drivers/infiniband/hw/hfi1/user_pages.c
index 469acb961fbd..9a94761765c0 100644
--- a/drivers/infiniband/hw/hfi1/user_pages.c
+++ b/drivers/infiniband/hw/hfi1/user_pages.c
@@ -106,7 +106,7 @@ int hfi1_acquire_user_pages(struct mm_struct *mm, unsigned long vaddr, size_t np
int ret;
unsigned int gup_flags = FOLL_LONGTERM | (writable ? FOLL_WRITE : 0);
- ret = get_user_pages_fast(vaddr, npages, gup_flags, pages);
+ ret = pin_user_pages_fast(vaddr, npages, gup_flags, pages);
if (ret < 0)
return ret;
diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.c b/drivers/infiniband/hw/mthca/mthca_memfree.c
index edccfd6e178f..8269ab040c21 100644
--- a/drivers/infiniband/hw/mthca/mthca_memfree.c
+++ b/drivers/infiniband/hw/mthca/mthca_memfree.c
@@ -472,7 +472,7 @@ int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
goto out;
}
- ret = get_user_pages_fast(uaddr & PAGE_MASK, 1,
+ ret = pin_user_pages_fast(uaddr & PAGE_MASK, 1,
FOLL_WRITE | FOLL_LONGTERM, pages);
if (ret < 0)
goto out;
diff --git a/drivers/infiniband/hw/qib/qib_user_pages.c b/drivers/infiniband/hw/qib/qib_user_pages.c
index 6bf764e41891..7fc4b5f81fcd 100644
--- a/drivers/infiniband/hw/qib/qib_user_pages.c
+++ b/drivers/infiniband/hw/qib/qib_user_pages.c
@@ -108,7 +108,7 @@ int qib_get_user_pages(unsigned long start_page, size_t num_pages,
down_read(¤t->mm->mmap_sem);
for (got = 0; got < num_pages; got += ret) {
- ret = get_user_pages(start_page + got * PAGE_SIZE,
+ ret = pin_user_pages(start_page + got * PAGE_SIZE,
num_pages - got,
FOLL_LONGTERM | FOLL_WRITE | FOLL_FORCE,
p + got, NULL);
diff --git a/drivers/infiniband/hw/qib/qib_user_sdma.c b/drivers/infiniband/hw/qib/qib_user_sdma.c
index 05190edc2611..1a3cc2957e3a 100644
--- a/drivers/infiniband/hw/qib/qib_user_sdma.c
+++ b/drivers/infiniband/hw/qib/qib_user_sdma.c
@@ -670,7 +670,7 @@ static int qib_user_sdma_pin_pages(const struct qib_devdata *dd,
else
j = npages;
- ret = get_user_pages_fast(addr, j, FOLL_LONGTERM, pages);
+ ret = pin_user_pages_fast(addr, j, FOLL_LONGTERM, pages);
if (ret != j) {
i = 0;
j = ret;
diff --git a/drivers/infiniband/hw/usnic/usnic_uiom.c b/drivers/infiniband/hw/usnic/usnic_uiom.c
index 62e6ffa9ad78..600896727d34 100644
--- a/drivers/infiniband/hw/usnic/usnic_uiom.c
+++ b/drivers/infiniband/hw/usnic/usnic_uiom.c
@@ -141,7 +141,7 @@ static int usnic_uiom_get_pages(unsigned long addr, size_t size, int writable,
ret = 0;
while (npages) {
- ret = get_user_pages(cur_base,
+ ret = pin_user_pages(cur_base,
min_t(unsigned long, npages,
PAGE_SIZE / sizeof(struct page *)),
gup_flags | FOLL_LONGTERM,
diff --git a/drivers/infiniband/sw/siw/siw_mem.c b/drivers/infiniband/sw/siw/siw_mem.c
index e99983f07663..e53b07dcfed5 100644
--- a/drivers/infiniband/sw/siw/siw_mem.c
+++ b/drivers/infiniband/sw/siw/siw_mem.c
@@ -426,7 +426,7 @@ struct siw_umem *siw_umem_get(u64 start, u64 len, bool writable)
while (nents) {
struct page **plist = &umem->page_chunk[i].plist[got];
- rv = get_user_pages(first_page_va, nents,
+ rv = pin_user_pages(first_page_va, nents,
foll_flags | FOLL_LONGTERM,
plist, NULL);
if (rv < 0)
--
2.24.0
next prev parent reply other threads:[~2019-12-11 2:56 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-11 2:52 [PATCH v9 00/25] mm/gup: track dma-pinned pages: FOLL_PIN John Hubbard
2019-12-11 2:52 ` [PATCH v9 01/25] mm/gup: factor out duplicate code from four routines John Hubbard
2019-12-11 2:52 ` [PATCH v9 02/25] mm/gup: move try_get_compound_head() to top, fix minor issues John Hubbard
2019-12-11 2:52 ` [PATCH v9 03/25] mm: Cleanup __put_devmap_managed_page() vs ->page_free() John Hubbard
2019-12-11 2:52 ` [PATCH v9 04/25] mm: devmap: refactor 1-based refcounting for ZONE_DEVICE pages John Hubbard
2019-12-11 2:52 ` [PATCH v9 05/25] goldish_pipe: rename local pin_user_pages() routine John Hubbard
2019-12-11 2:52 ` [PATCH v9 06/25] mm: fix get_user_pages_remote()'s handling of FOLL_LONGTERM John Hubbard
2019-12-11 2:53 ` [PATCH v9 07/25] vfio: fix FOLL_LONGTERM use, simplify get_user_pages_remote() call John Hubbard
2019-12-11 2:53 ` [PATCH v9 08/25] mm/gup: allow FOLL_FORCE for get_user_pages_fast() John Hubbard
2019-12-11 2:53 ` [PATCH v9 09/25] IB/umem: use get_user_pages_fast() to pin DMA pages John Hubbard
2019-12-11 2:53 ` [PATCH v9 10/25] mm/gup: introduce pin_user_pages*() and FOLL_PIN John Hubbard
2019-12-11 20:57 ` Jonathan Corbet
2019-12-11 21:25 ` John Hubbard
2019-12-11 2:53 ` [PATCH v9 11/25] goldish_pipe: convert to pin_user_pages() and put_user_page() John Hubbard
2019-12-11 2:53 ` John Hubbard [this message]
2019-12-11 2:53 ` [PATCH v9 13/25] mm/process_vm_access: set FOLL_PIN via pin_user_pages_remote() John Hubbard
2019-12-11 2:53 ` [PATCH v9 14/25] drm/via: set FOLL_PIN via pin_user_pages_fast() John Hubbard
2019-12-11 2:53 ` [PATCH v9 15/25] fs/io_uring: set FOLL_PIN via pin_user_pages() John Hubbard
2019-12-11 2:53 ` [PATCH v9 16/25] net/xdp: " John Hubbard
2019-12-11 2:53 ` [PATCH v9 17/25] media/v4l2-core: set pages dirty upon releasing DMA buffers John Hubbard
2019-12-11 2:53 ` [PATCH v9 18/25] media/v4l2-core: pin_user_pages (FOLL_PIN) and put_user_page() conversion John Hubbard
2019-12-11 2:53 ` [PATCH v9 19/25] vfio, mm: " John Hubbard
2019-12-11 2:53 ` [PATCH v9 20/25] powerpc: book3s64: convert to pin_user_pages() and put_user_page() John Hubbard
2019-12-11 10:42 ` Jan Kara
2019-12-11 2:53 ` [PATCH v9 21/25] mm/gup_benchmark: use proper FOLL_WRITE flags instead of hard-coding "1" John Hubbard
2019-12-11 2:53 ` [PATCH v9 22/25] mm, tree-wide: rename put_user_page*() to unpin_user_page*() John Hubbard
2019-12-11 2:53 ` [PATCH v9 23/25] mm/gup: track FOLL_PIN pages John Hubbard
2019-12-11 11:28 ` Jan Kara
2019-12-12 5:53 ` John Hubbard
2019-12-17 8:03 ` kbuild test robot
2019-12-17 8:03 ` [RFC PATCH] mm/gup: try_pin_compound_head() can be static kbuild test robot
2019-12-17 13:56 ` John Hubbard
2019-12-11 2:53 ` [PATCH v9 24/25] mm/gup_benchmark: support pin_user_pages() and related calls John Hubbard
2019-12-11 2:53 ` [PATCH v9 25/25] selftests/vm: run_vmtests: invoke gup_benchmark with basic FOLL_PIN coverage John Hubbard
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