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Wed, 3 May 2023 10:27:20 +0000 (GMT) Received: from epsmges2p4.samsung.com (unknown [182.195.36.88]) by epsnrtp1.localdomain (Postfix) with ESMTP id 4QBCn36psCz4x9Q1; Wed, 3 May 2023 10:27:19 +0000 (GMT) X-AuditID: b6c32a48-6d3fa70000005998-6c-6452370710a0 Received: from epcas2p3.samsung.com ( [182.195.41.55]) by epsmges2p4.samsung.com (Symantec Messaging Gateway) with SMTP id 6E.A0.22936.70732546; Wed, 3 May 2023 19:27:19 +0900 (KST) Mime-Version: 1.0 Subject: [PATCH 14/15] block: blk-integrity: change sg-table configuration method for integrity Reply-To: j-young.choi@samsung.com Sender: Jinyoung CHOI From: Jinyoung CHOI To: Jinyoung CHOI , "axboe@kernel.dk" , "hch@lst.de" , "martin.petersen@oracle.com" , "linux-block@vger.kernel.org" , "linux-kernel@vger.kernel.org" X-Priority: 3 X-Content-Kind-Code: NORMAL In-Reply-To: <20230503094912epcms2p4bef206eab1c41a92eba2583a69c74323@epcms2p4> X-CPGS-Detection: blocking_info_exchange X-Drm-Type: N,general X-Msg-Generator: Mail X-Msg-Type: PERSONAL X-Reply-Demand: N Message-ID: <20230503102719epcms2p457434fefd535ee43d502eff854227919@epcms2p4> Date: Wed, 03 May 2023 19:27:19 +0900 X-CMS-MailID: 20230503102719epcms2p457434fefd535ee43d502eff854227919 X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P X-CPGSPASS: Y X-CPGSPASS: Y X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrPKsWRmVeSWpSXmKPExsWy7bCmuS67eVCKwcXpxhar7/azWbw8pGmx cvVRJove/q1sFntvaVtc3jWHzWL58X9MDuwel8+Weuy+2cDm8fHpLRaPvi2rGD0+b5ILYI3K tslITUxJLVJIzUvOT8nMS7dV8g6Od443NTMw1DW0tDBXUshLzE21VXLxCdB1y8wBukFJoSwx pxQoFJBYXKykb2dTlF9akqqQkV9cYquUWpCSU2BeoFecmFtcmpeul5daYmVoYGBkClSYkJ2x 4/l/9oI9ChWbpt5ja2C8ItnFyMkhIWAicenOAvYuRi4OIYEdjBJPX95g62Lk4OAVEJT4u0MY pEZYIFHi7qleNhBbSEBJ4tyaWYwgJcICBhK3es1BwmwCehI/l8wAKxERWM0k0fy8BmI8r8SM 9qcsELa0xPblWxlBbE4BP4nHG24xQsQ1JH4s62WGsEUlbq5+yw5jvz82H6pGRKL13lmoGkGJ Bz93Q8UlJQ4d+gp2sYRAvsSGA4EQ4RqJt8sPQJXoS1zr2Ah2Aq+Ar8S1FX/BzmQRUJXY/+Ie VI2LxKWjr8HizALyEtvfzmEGGcksoCmxfpc+xHRliSO3WCAq+CQ6Dv9lh3mwYeNvrOwd854w QbSqSSxqMoIIy0h8PTyffQKj0ixEIM9CsnYWwtoFjMyrGMVSC4pz01OLjQpM4PGanJ+7iRGc ErU8djDOfvtB7xAjEwfjIUYJDmYlEd4PhX4pQrwpiZVVqUX58UWlOanFhxhNgR6eyCwlmpwP TMp5JfGGJpYGJmZmhuZGpgbmSuK8HzuUU4QE0hNLUrNTUwtSi2D6mDg4pRqYZp4IZ0uR/HDE YJcjy2Gve+/bOncUz9l2m8Vsmaua0YaXVy7om1Y62vkf4n5hdnGLpWDCBksbXnG3Goe1/U61 u9bE77dkY5+V36LktHTpc+YZXadzgi7H8jSvdkj4ovfixlcFBu3laU1zD54+0Pb3+lqFwkI/ x4z+bXecv+WcPsy/J8ApwSqp7vIZhiMPPPnenzEIzn06ZeGaR9UeWvnREW+edb/Ze35zhErJ O4FI38tFTuHJW9pu/7+7/VmMWVj3XseQk/HS3msY/q1LljgT6tWb3p21IG/BvyMrDKMVN5VL Gro7GW3duvlNSMjF77ErLr/vKDb/8mu3/Y7ZGekWfR7LeduDwrRFeKptLLSVWIozEg21mIuK EwFnQNY1EgQAAA== DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20230503094912epcms2p4bef206eab1c41a92eba2583a69c74323 References: <20230503094912epcms2p4bef206eab1c41a92eba2583a69c74323@epcms2p4> X-Spam-Status: No, score=-4.6 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_PASS,SPF_PASS, T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1764869806641827111?= X-GMAIL-MSGID: =?utf-8?q?1764869806641827111?= Previously, a bio_vec of bip was made of one page in the block layer, and sg_list was generated using hw information in lld. This is done in the block layer and the bio_vec has been changed to multi-page, so it is changed to configure the sg-table using the existing api, such as the sg-table setting for the bio. (e.g. multi-page map) Cc: Christoph Hellwig Cc: Martin K. Petersen Signed-off-by: Jinyoung Choi --- block/blk-integrity.c | 52 ------------------------------------------- block/blk-merge.c | 52 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 52 insertions(+), 52 deletions(-) diff --git a/block/blk-integrity.c b/block/blk-integrity.c index 64407b412947..c50954652177 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -55,58 +55,6 @@ int blk_rq_count_integrity_sg(struct request_queue *q, struct bio *bio) } EXPORT_SYMBOL(blk_rq_count_integrity_sg); -/** - * blk_rq_map_integrity_sg - Map integrity metadata into a scatterlist - * @q: request queue - * @bio: bio with integrity metadata attached - * @sglist: target scatterlist - * - * Description: Map the integrity vectors in request into a - * scatterlist. The scatterlist must be big enough to hold all - * elements. I.e. sized using blk_rq_count_integrity_sg(). - */ -int blk_rq_map_integrity_sg(struct request_queue *q, struct bio *bio, - struct scatterlist *sglist) -{ - struct bio_vec iv, ivprv = { NULL }; - struct scatterlist *sg = NULL; - unsigned int segments = 0; - struct bvec_iter iter; - int prev = 0; - - bio_for_each_integrity_vec(iv, bio, iter) { - - if (prev) { - if (!biovec_phys_mergeable(q, &ivprv, &iv)) - goto new_segment; - if (sg->length + iv.bv_len > queue_max_segment_size(q)) - goto new_segment; - - sg->length += iv.bv_len; - } else { -new_segment: - if (!sg) - sg = sglist; - else { - sg_unmark_end(sg); - sg = sg_next(sg); - } - - sg_set_page(sg, iv.bv_page, iv.bv_len, iv.bv_offset); - segments++; - } - - prev = 1; - ivprv = iv; - } - - if (sg) - sg_mark_end(sg); - - return segments; -} -EXPORT_SYMBOL(blk_rq_map_integrity_sg); - /** * blk_integrity_compare - Compare integrity profile of two disks * @gd1: Disk to compare diff --git a/block/blk-merge.c b/block/blk-merge.c index c6a0958e8df1..71539d88ffe6 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -524,6 +524,58 @@ __blk_segment_map_sg_merge(struct request_queue *q, struct bio_vec *bvec, return true; } +/** + * blk_rq_map_integrity_sg - Map integrity metadata into a scatterlist + * @q: request queue + * @bio: bio with integrity metadata attached + * @sglist: target scatterlist + * + * Description: Map the integrity vectors in request into a scatterlist. + * The scatterlist must be big enough to hold all elements. + */ +int blk_rq_map_integrity_sg(struct request_queue *q, struct bio *bio, + struct scatterlist *sglist) +{ + struct bio_vec iv, ivprv = { NULL }; + struct scatterlist *sg = NULL; + unsigned int nsegs = 0; + struct bvec_iter iter; + bool new_bio = false; + + for_each_bio(bio) { + struct bio_integrity_payload *bip = bio->bi_integrity; + + bip_for_each_mp_bvec(iv, bip, iter) { + /* + * Only try to merge bvecs from two bios given we + * have done bio internal merge when adding pages + * to bio + */ + if (new_bio && + __blk_segment_map_sg_merge(q, &iv, &ivprv, &sg)) + goto next_iv; + + if (iv.bv_offset + iv.bv_len <= PAGE_SIZE) + nsegs += __blk_bvec_map_sg(iv, sglist, &sg); + else + nsegs += blk_bvec_map_sg(q, &iv, sglist, &sg); + next_iv: + new_bio = false; + } + + if (likely(bip->bip_iter.bi_size)) { + ivprv = iv; + new_bio = true; + } + } + + if (sg) + sg_mark_end(sg); + + return nsegs; +} +EXPORT_SYMBOL(blk_rq_map_integrity_sg); + static int __blk_bios_map_sg(struct request_queue *q, struct bio *bio, struct scatterlist *sglist, struct scatterlist **sg)