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Wong" , Trond Myklebust , Anna Schumaker , Jan Kara , Logan Gunthorpe , , , , , , LKML , John Hubbard Subject: [PATCH 5/6] NFS: direct-io: convert to FOLL_PIN pages Date: Sat, 27 Aug 2022 01:36:06 -0700 Message-ID: <20220827083607.2345453-6-jhubbard@nvidia.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220827083607.2345453-1-jhubbard@nvidia.com> References: <20220827083607.2345453-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 67c097dc-a8cd-4984-4acb-08da88073446 X-MS-TrafficTypeDiagnostic: BYAPR12MB5704:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:12.22.5.235;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:InfoNoRecords;CAT:NONE;SFS:(13230016)(4636009)(39860400002)(396003)(346002)(376002)(136003)(36840700001)(46966006)(40470700004)(83380400001)(82310400005)(81166007)(40460700003)(40480700001)(8676002)(82740400003)(70206006)(36860700001)(70586007)(4326008)(36756003)(5660300002)(7416002)(26005)(6916009)(8936002)(316002)(1076003)(6666004)(478600001)(41300700001)(54906003)(356005)(86362001)(107886003)(47076005)(336012)(186003)(426003)(2906002)(2616005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Aug 2022 08:36:14.8423 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 67c097dc-a8cd-4984-4acb-08da88073446 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[12.22.5.235];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT003.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR12MB5704 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Convert the NFS Direct IO layer to use pin_user_pages_fast() and unpin_user_page(), instead of get_user_pages_fast() and put_page(). Signed-off-by: John Hubbard --- fs/nfs/direct.c | 19 ++++++------------- 1 file changed, 6 insertions(+), 13 deletions(-) diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 1707f46b1335..f6e47329e092 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -142,13 +142,6 @@ int nfs_swap_rw(struct kiocb *iocb, struct iov_iter *iter) return 0; } -static void nfs_direct_release_pages(struct page **pages, unsigned int npages) -{ - unsigned int i; - for (i = 0; i < npages; i++) - put_page(pages[i]); -} - void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo, struct nfs_direct_req *dreq) { @@ -332,11 +325,11 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq, size_t pgbase; unsigned npages, i; - result = iov_iter_get_pages_alloc2(iter, &pagevec, + result = dio_w_iov_iter_pin_pages_alloc(iter, &pagevec, rsize, &pgbase); if (result < 0) break; - + bytes = result; npages = (result + pgbase + PAGE_SIZE - 1) / PAGE_SIZE; for (i = 0; i < npages; i++) { @@ -362,7 +355,7 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq, pos += req_len; dreq->bytes_left -= req_len; } - nfs_direct_release_pages(pagevec, npages); + dio_w_unpin_user_pages(pagevec, npages); kvfree(pagevec); if (result < 0) break; @@ -791,8 +784,8 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq, size_t pgbase; unsigned npages, i; - result = iov_iter_get_pages_alloc2(iter, &pagevec, - wsize, &pgbase); + result = dio_w_iov_iter_pin_pages_alloc(iter, &pagevec, + wsize, &pgbase); if (result < 0) break; @@ -829,7 +822,7 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq, pos += req_len; dreq->bytes_left -= req_len; } - nfs_direct_release_pages(pagevec, npages); + dio_w_unpin_user_pages(pagevec, npages); kvfree(pagevec); if (result < 0) break;