From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 93B69C33CA4 for ; Thu, 21 Nov 2019 07:14:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C406208A3 for ; Thu, 21 Nov 2019 07:14:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="abj4hJXY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726437AbfKUHOp (ORCPT ); Thu, 21 Nov 2019 02:14:45 -0500 Received: from hqemgate16.nvidia.com ([216.228.121.65]:4488 "EHLO hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727419AbfKUHON (ORCPT ); Thu, 21 Nov 2019 02:14:13 -0500 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Wed, 20 Nov 2019 23:14:00 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Wed, 20 Nov 2019 23:13:59 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Wed, 20 Nov 2019 23:13:59 -0800 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Thu, 21 Nov 2019 07:13:56 +0000 Received: from hqnvemgw03.nvidia.com (10.124.88.68) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Thu, 21 Nov 2019 07:13:56 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by hqnvemgw03.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Wed, 20 Nov 2019 23:13:56 -0800 From: John Hubbard To: Andrew Morton CC: Al Viro , Alex Williamson , Benjamin Herrenschmidt , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Christoph Hellwig , Dan Williams , Daniel Vetter , Dave Chinner , David Airlie , "David S . Miller" , Ira Weiny , Jan Kara , Jason Gunthorpe , Jens Axboe , Jonathan Corbet , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Magnus Karlsson , "Mauro Carvalho Chehab" , Michael Ellerman , Michal Hocko , Mike Kravetz , "Paul Mackerras" , Shuah Khan , Vlastimil Babka , , , , , , , , , , , , , LKML , John Hubbard , "Jason Gunthorpe" Subject: [PATCH v7 12/24] IB/{core,hw,umem}: set FOLL_PIN via pin_user_pages*(), fix up ODP Date: Wed, 20 Nov 2019 23:13:42 -0800 Message-ID: <20191121071354.456618-13-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191121071354.456618-1-jhubbard@nvidia.com> References: <20191121071354.456618-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: quoted-printable Content-Type: text/plain DKIM-Signature: v=1; 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== Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org 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