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a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1574320440; bh=myfFUrXMB6aLWHiNM/hWcFnVqvce6UcHk9d4RQDaMWY=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:X-NVConfidentiality: Content-Transfer-Encoding:Content-Type; b=abj4hJXYMm947y/aprfGNual9fWZxokobjicqmcEi+Vv0kmZW5Jq05HomeGJQAZ6I rkBaGldYkD+Y6h72ZzN2NFRo8vmE3GovmjmAOQcDYYN4N9tappF0PHdWWWDEhD6mGa DhDbX6Xil8MvCanRYNjfUCoy75gW11sTTTWmJM7rVpqdpLrTpN/bJElBXe5AAckp7F r98cUznEMgvhQrW7Fh4UsOUMlCAa1XME2XryCdMQ84pKgailwCEY2VoR5F6YfhrYBl +jXrSaKB4SbcCS5j3RfjjqiUH8AdyK9DgLSi1JTSxrT77uk7iP3LPN5Mwr4nS4WoSy gyj1i5tSS4N4w== X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Michal Hocko , Jan Kara , kvm@vger.kernel.org, linux-doc@vger.kernel.org, David Airlie , Dave Chinner , dri-devel@lists.freedesktop.org, LKML , linux-mm@kvack.org, Paul Mackerras , linux-kselftest@vger.kernel.org, Ira Weiny , Jonathan Corbet , linux-rdma@vger.kernel.org, Christoph Hellwig , Jason Gunthorpe , Jason Gunthorpe , Vlastimil Babka , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , linux-media@vger.kernel.org, Shuah Khan , John Hubbard , linux-block@vger.kernel.org, =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Al Viro , Dan Williams , Mauro Carvalho Chehab , Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, Alex Williamson , Daniel Vetter , linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, "David S . Miller" , Mike Kravetz Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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 Signed-off-by: John Hubbard --- 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 3d664a2539eb..2c287ced3439 100644 --- a/drivers/infiniband/core/umem.c +++ b/drivers/infiniband/core/umem.c @@ -271,7 +271,7 @@ struct ib_umem *ib_umem_get(struct ib_udata *udata, uns= igned long addr, sg =3D umem->sg_head.sgl; =20 while (npages) { - ret =3D get_user_pages_fast(cur_base, + ret =3D 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/u= mem_odp.c index 163ff7ba92b7..11249406148a 100644 --- a/drivers/infiniband/core/umem_odp.c +++ b/drivers/infiniband/core/umem_odp.c @@ -495,9 +495,8 @@ EXPORT_SYMBOL(ib_umem_odp_release); * The function returns -EFAULT if the DMA mapping operation fails. It ret= urns * -EAGAIN if a concurrent invalidation prevents us from updating the page= . * - * The page is released via put_user_page even if the operation failed. Fo= r - * 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, @@ -542,7 +541,7 @@ static int ib_umem_odp_map_dma_single_page( } =20 out: - put_user_page(page); + put_page(page); =20 if (remove_existing_mapping) { ib_umem_notifier_start_account(umem_odp); @@ -665,7 +664,7 @@ int ib_umem_odp_map_dma_pages(struct ib_umem_odp *umem_= odp, u64 user_virt, ret =3D -EFAULT; break; } - put_user_page(local_page_list[j]); + put_page(local_page_list[j]); continue; } =20 @@ -692,8 +691,8 @@ 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/h= w/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, unsig= ned long vaddr, size_t np int ret; unsigned int gup_flags =3D FOLL_LONGTERM | (writable ? FOLL_WRITE : 0); =20 - ret =3D get_user_pages_fast(vaddr, npages, gup_flags, pages); + ret =3D pin_user_pages_fast(vaddr, npages, gup_flags, pages); if (ret < 0) return ret; =20 diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.c b/drivers/infiniba= nd/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 mth= ca_uar *uar, goto out; } =20 - ret =3D get_user_pages_fast(uaddr & PAGE_MASK, 1, + ret =3D 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/infiniban= d/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, =20 down_read(¤t->mm->mmap_sem); for (got =3D 0; got < num_pages; got +=3D ret) { - ret =3D get_user_pages(start_page + got * PAGE_SIZE, + ret =3D 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_dev= data *dd, else j =3D npages; =20 - ret =3D get_user_pages_fast(addr, j, FOLL_LONGTERM, pages); + ret =3D pin_user_pages_fast(addr, j, FOLL_LONGTERM, pages); if (ret !=3D j) { i =3D 0; j =3D 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, siz= e_t size, int writable, ret =3D 0; =20 while (npages) { - ret =3D get_user_pages(cur_base, + ret =3D 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/si= w/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 =3D &umem->page_chunk[i].plist[got]; =20 - rv =3D get_user_pages(first_page_va, nents, + rv =3D pin_user_pages(first_page_va, nents, foll_flags | FOLL_LONGTERM, plist, NULL); if (rv < 0) --=20 2.24.0