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(mtr-vdi-031.wap.labs.mlnx [10.209.102.136]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id xA5GKQm3013132; Tue, 5 Nov 2019 18:20:27 +0200 From: Max Gurtovoy To: linux-nvme@lists.infradead.org, kbusch@kernel.org, hch@lst.de, sagi@grimberg.me Subject: [PATCH 06/15] block: Introduce BIP_NOMAP_INTEGRITY bip_flag Date: Tue, 5 Nov 2019 18:20:17 +0200 Message-Id: <20191105162026.183901-8-maxg@mellanox.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191105162026.183901-1-maxg@mellanox.com> References: <20191105162026.183901-1-maxg@mellanox.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191105_082042_262620_F5D21741 X-CRM114-Status: UNSURE ( 7.65 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vladimirk@mellanox.com, idanb@mellanox.com, israelr@mellanox.com, shlomin@mellanox.com, oren@mellanox.com, maxg@mellanox.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org From: Israel Rukshin It means that reftag shouldn't be remapped. This flag will be used in case some other layer did the reftag remapping (e.g. in NVMe/RDMA the initiator controller performs the remapping so target side shouldn't map it again). Signed-off-by: Israel Rukshin Reviewed-by: Max Gurtovoy --- block/t10-pi.c | 7 +++++++ include/linux/bio.h | 1 + 2 files changed, 8 insertions(+) diff --git a/block/t10-pi.c b/block/t10-pi.c index f4907d9..6de380b 100644 --- a/block/t10-pi.c +++ b/block/t10-pi.c @@ -144,6 +144,9 @@ static void t10_pi_type1_prepare(struct request *rq) /* Already remapped? */ if (bip->bip_flags & BIP_MAPPED_INTEGRITY) break; + /* No need to remap */ + if (bip->bip_flags & BIP_NOMAP_INTEGRITY) + break; bip_for_each_vec(iv, bip, iter) { void *p, *pmap; @@ -193,6 +196,10 @@ static void t10_pi_type1_complete(struct request *rq, unsigned int nr_bytes) struct bio_vec iv; struct bvec_iter iter; + /* No need to remap */ + if (bip->bip_flags & BIP_NOMAP_INTEGRITY) + break; + bip_for_each_vec(iv, bip, iter) { void *p, *pmap; unsigned int j; diff --git a/include/linux/bio.h b/include/linux/bio.h index 3cdb84c..2ba09e6 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -299,6 +299,7 @@ enum bip_flags { BIP_CTRL_NOCHECK = 1 << 2, /* disable HBA integrity checking */ BIP_DISK_NOCHECK = 1 << 3, /* disable disk integrity checking */ BIP_IP_CHECKSUM = 1 << 4, /* IP checksum */ + BIP_NOMAP_INTEGRITY = 1 << 5, /* ref tag shouldn't be remapped */ }; /* -- 1.8.3.1 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme