From patchwork Thu Apr 13 22:05:22 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Logan Gunthorpe X-Patchwork-Id: 9680471 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D949B60326 for ; Fri, 14 Apr 2017 00:59:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CB8F5286A1 for ; Fri, 14 Apr 2017 00:59:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C01CB286AC; Fri, 14 Apr 2017 00:59:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 7B345286A1 for ; Fri, 14 Apr 2017 00:59:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 73CA66E95C; Fri, 14 Apr 2017 00:58:57 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org X-Greylist: delayed 2092 seconds by postgrey-1.35 at gabe; Thu, 13 Apr 2017 22:41:05 UTC Received: from ale.deltatee.com (ale.deltatee.com [207.54.116.67]) by gabe.freedesktop.org (Postfix) with ESMTPS id 917C26E93E; Thu, 13 Apr 2017 22:41:05 +0000 (UTC) Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.84_2) (envelope-from ) id 1cymsH-0003tf-G7; Thu, 13 Apr 2017 16:06:02 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.84_2) (envelope-from ) id 1cymsG-0001BI-II; Thu, 13 Apr 2017 16:05:56 -0600 From: Logan Gunthorpe To: Christoph Hellwig , "Martin K. Petersen" , Sagi Grimberg , Jens Axboe , Tejun Heo , Greg Kroah-Hartman , Dan Williams , Ross Zwisler , Matthew Wilcox , Sumit Semwal , Ming Lin , linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, intel-gfx@lists.freedesktop.org, linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, linux-nvme@lists.infradead.org, linux-nvdimm@lists.01.org, linux-scsi@vger.kernel.org, fcoe-devel@open-fcoe.org, open-iscsi@googlegroups.com, megaraidlinux.pdl@broadcom.com, sparmaintainer@unisys.com, devel@driverdev.osuosl.org, target-devel@vger.kernel.org, netdev@vger.kernel.org, linux-rdma@vger.kernel.org, rds-devel@oss.oracle.com Date: Thu, 13 Apr 2017 16:05:22 -0600 Message-Id: <1492121135-4437-10-git-send-email-logang@deltatee.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1492121135-4437-1-git-send-email-logang@deltatee.com> References: <1492121135-4437-1-git-send-email-logang@deltatee.com> X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: hch@lst.de, martin.petersen@oracle.com, sagi@grimberg.me, axboe@kernel.dk, tj@kernel.org, gregkh@linuxfoundation.org, dan.j.williams@intel.com, ross.zwisler@linux.intel.com, mawilcox@microsoft.com, sumit.semwal@linaro.org, ming.l@ssi.samsung.com, linaro-mm-sig@lists.linaro.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-nvme@lists.infradead.org, linux-nvdimm@lists.01.org, fcoe-devel@open-fcoe.org, open-iscsi@googlegroups.com, megaraidlinux.pdl@broadcom.com, sparmaintainer@unisys.com, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-media@vger.kernel.org, linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, netdev@vger.kernel.org, linux-rdma@vger.kernel.org, rds-devel@oss.oracle.com, swise@opengridcomputing.com, sbates@raithlin.com, logang@deltatee.com X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH 09/22] dm-crypt: Make use of the new sg_map helper in 4 call sites X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) X-Mailman-Approved-At: Fri, 14 Apr 2017 00:58:55 +0000 Cc: Steve Wise , Logan Gunthorpe , Stephen Bates X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Very straightforward conversion to the new function in all four spots. Signed-off-by: Logan Gunthorpe --- drivers/md/dm-crypt.c | 38 +++++++++++++++++++++++++------------- 1 file changed, 25 insertions(+), 13 deletions(-) diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 389a363..6bd0ffc 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -589,9 +589,12 @@ static int crypt_iv_lmk_gen(struct crypt_config *cc, u8 *iv, int r = 0; if (bio_data_dir(dmreq->ctx->bio_in) == WRITE) { - src = kmap_atomic(sg_page(&dmreq->sg_in)); - r = crypt_iv_lmk_one(cc, iv, dmreq, src + dmreq->sg_in.offset); - kunmap_atomic(src); + src = sg_map(&dmreq->sg_in, SG_KMAP_ATOMIC); + if (IS_ERR(src)) + return PTR_ERR(src); + + r = crypt_iv_lmk_one(cc, iv, dmreq, src); + sg_unmap(&dmreq->sg_in, src, SG_KMAP_ATOMIC); } else memset(iv, 0, cc->iv_size); @@ -607,14 +610,17 @@ static int crypt_iv_lmk_post(struct crypt_config *cc, u8 *iv, if (bio_data_dir(dmreq->ctx->bio_in) == WRITE) return 0; - dst = kmap_atomic(sg_page(&dmreq->sg_out)); - r = crypt_iv_lmk_one(cc, iv, dmreq, dst + dmreq->sg_out.offset); + dst = sg_map(&dmreq->sg_out, SG_KMAP_ATOMIC); + if (IS_ERR(dst)) + return PTR_ERR(dst); + + r = crypt_iv_lmk_one(cc, iv, dmreq, dst); /* Tweak the first block of plaintext sector */ if (!r) - crypto_xor(dst + dmreq->sg_out.offset, iv, cc->iv_size); + crypto_xor(dst, iv, cc->iv_size); - kunmap_atomic(dst); + sg_unmap(&dmreq->sg_out, dst, SG_KMAP_ATOMIC); return r; } @@ -731,9 +737,12 @@ static int crypt_iv_tcw_gen(struct crypt_config *cc, u8 *iv, /* Remove whitening from ciphertext */ if (bio_data_dir(dmreq->ctx->bio_in) != WRITE) { - src = kmap_atomic(sg_page(&dmreq->sg_in)); - r = crypt_iv_tcw_whitening(cc, dmreq, src + dmreq->sg_in.offset); - kunmap_atomic(src); + src = sg_map(&dmreq->sg_in, SG_KMAP_ATOMIC); + if (IS_ERR(src)) + return PTR_ERR(src); + + r = crypt_iv_tcw_whitening(cc, dmreq, src); + sg_unmap(&dmreq->sg_in, src, SG_KMAP_ATOMIC); } /* Calculate IV */ @@ -755,9 +764,12 @@ static int crypt_iv_tcw_post(struct crypt_config *cc, u8 *iv, return 0; /* Apply whitening on ciphertext */ - dst = kmap_atomic(sg_page(&dmreq->sg_out)); - r = crypt_iv_tcw_whitening(cc, dmreq, dst + dmreq->sg_out.offset); - kunmap_atomic(dst); + dst = sg_map(&dmreq->sg_out, SG_KMAP_ATOMIC); + if (IS_ERR(dst)) + return PTR_ERR(dst); + + r = crypt_iv_tcw_whitening(cc, dmreq, dst); + sg_unmap(&dmreq->sg_out, dst, SG_KMAP_ATOMIC); return r; }