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Thu, 29 Sep 2022 21:22:38 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas5p4.samsung.com (KnoxPortal) with ESMTPA id 20220929121650epcas5p424925af86ec6941bb53e5c102fd0ffc8~ZU_vrtSGV2903829038epcas5p44; Thu, 29 Sep 2022 12:16:50 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20220929121650epsmtrp2f9ab656e80b5b3d92c29a895c1679244~ZU_vq_UDM1811218112epsmtrp2F; Thu, 29 Sep 2022 12:16:50 +0000 (GMT) X-AuditID: b6c32a4a-259fb70000019a35-d7-63358e0ecd41 Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id 42.3C.18644.1BC85336; Thu, 29 Sep 2022 21:16:49 +0900 (KST) Received: from localhost.localdomain (unknown [107.110.206.5]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20220929121648epsmtip1869c87726d43726a5bd74fb439227216~ZU_uT09Kl2848328483epsmtip1Z; Thu, 29 Sep 2022 12:16:48 +0000 (GMT) From: Anuj Gupta To: axboe@kernel.dk, hch@lst.de, kbusch@kernel.org Cc: io-uring@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, gost.dev@samsung.com, linux-scsi@vger.kernel.org, Kanchan Joshi Subject: [PATCH for-next v11 06/13] block: factor out blk_rq_map_bio_alloc helper Date: Thu, 29 Sep 2022 17:36:25 +0530 Message-Id: <20220929120632.64749-7-anuj20.g@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220929120632.64749-1-anuj20.g@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprNJsWRmVeSWpSXmKPExsWy7bCmpi5fn2mywfw7ohar7/azWdw8sJPJ YuXqo0wW71rPsVgc/f+WzWLSoWuMFntvaVvMX/aU3aL7+g42B06Py2dLPTat6mTz2Lyk3mP3 zQY2j74tqxg9Pm+SC2CLyrbJSE1MSS1SSM1Lzk/JzEu3VfIOjneONzUzMNQ1tLQwV1LIS8xN tVVy8QnQdcvMATpJSaEsMacUKBSQWFyspG9nU5RfWpKqkJFfXGKrlFqQklNgUqBXnJhbXJqX rpeXWmJlaGBgZApUmJCdsWx1K3vBCoGKO6tnszUwzuXtYuTkkBAwkdj2tou1i5GLQ0hgN6PE rf99jBDOJ0aJ+WevMUE4nxklHnyaClTGAdbyY6MLSLeQwC5GiV9f1eBqtmxfzgqSYBNQlzjy vJURxBYRMJLY/+kk2ApmgS2MEs3rFrODJIQFgiUOd+xjAbFZBFQlpq++ygZi8wpYSizYM5EN 4j55iZmXvoPVcwpYSSy+NocVokZQ4uTMJ2C9zEA1zVtnM4MskBD4yy6x5ekrFohmF4klbz6z QtjCEq+Ob2GHsKUkPr/bC7UgXeLH5adMEHaBRPOxfYwQtr1E66l+ZpCPmQU0Jdbv0ocIy0pM PbWOCWIvn0Tv7ydQrbwSO+bB2EoS7SvnQNkSEnvPNTBBAs5D4t4sXUhg9TJKXH+8hWkCo8Is JO/MQvLOLITNCxiZVzFKphYU56anFpsWGOWllsMjOTk/dxMjOJVqee1gfPjgg94hRiYOxkOM EhzMSiK84gWmyUK8KYmVValF+fFFpTmpxYcYTYHhPZFZSjQ5H5jM80riDU0sDUzMzMxMLI3N DJXEeRfP0EoWEkhPLEnNTk0tSC2C6WPi4JRqYNJiSlq67Py2Ddv1Gj6Xx0e/tuO2Zuf/WaRg spOlizkvLchl9ZVDRcmXFSfcfyDMxm5Y7L7JL6PXKO9e2RG+TXftmPew9JzT2lOxdLlcUeJl 64i7ZtrtDleX7bCfpaHfnqq28+g7vbsVoXI3t18+flNyklvQrMTveQe9PPuO2MvuuReoy63L w+E19W7pj6Vnpuzde/eTlN7tY/NS2hW1vY4u/TVV2lTlfuObby6Cn606mM/FSpY8LQ8K/F7m 3HnLQTIs2Ejx1pOrX/b/srP7xOQZNWXhvEOTt9ou0/y6Y/ad0Jf6HNdnR/+Z2XBkUQqX4OPs W5fL5Jp1NLKuXpL4UPRt76q4+3mT0hY1P9mmekuJpTgj0VCLuag4EQD/wuDfLgQAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrELMWRmVeSWpSXmKPExsWy7bCSnO7GHtNkg6OPTS1W3+1ns7h5YCeT xcrVR5ks3rWeY7E4+v8tm8WkQ9cYLfbe0raYv+wpu0X39R1sDpwel8+Wemxa1cnmsXlJvcfu mw1sHn1bVjF6fN4kF8AWxWWTkpqTWZZapG+XwJWxbHUre8EKgYo7q2ezNTDO5e1i5OCQEDCR +LHRpYuRi0NIYAejxK75P1m7GDmB4hISp14uY4SwhSVW/nvODlH0kVHiztuZ7CAJNgF1iSPP W8GKRATMJJYeXsMCUsQssItRYu7Wb8wgCWGBQImjvx+DTWURUJWYvvoqG4jNK2ApsWDPRDaI DfISMy99BxvKKWAlsfjaHFaQ64SAarbfVIAoF5Q4OfMJC4jNDFTevHU28wRGgVlIUrOQpBYw Mq1ilEwtKM5Nzy02LDDKSy3XK07MLS7NS9dLzs/dxAgOdi2tHYx7Vn3QO8TIxMF4iFGCg1lJ hFe8wDRZiDclsbIqtSg/vqg0J7X4EKM0B4uSOO+FrpPxQgLpiSWp2ampBalFMFkmDk6pBqYT ijP0Z55j/Puj88rW7s1NTicrOZzCAtY6NNyZNtH9+lbW5UEMUrr6rqfMmbwUfGfrdfP9Oi71 dIKgdfnB1MNC3kvUTO7cZv+S613vuPBL9RXz8FSb2T2qZy34RXo/NN8tW5wS+nnjZwOlyvKs H5L8xuKOHNZv1B/9sf8QPyVGPdHyyEQTaxUrJX895WxV1YwjIvkfb3/bmPjss/7dvx1+/9ZM WGnb+J0xJGU1y8Pn5YczZ/2ynXw7bn3+8/7EtSXFav/MQtW7C/J2H17korNB63rB8R38L4sT HuxJ0674H+SftPyHSoRMp42LYnjA2tdT9A2zcrsXH6k8ODmpTqYu+tpyO/+ut4cnim/4ocRS nJFoqMVcVJwIANeXzsTlAgAA X-CMS-MailID: 20220929121650epcas5p424925af86ec6941bb53e5c102fd0ffc8 X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220929121650epcas5p424925af86ec6941bb53e5c102fd0ffc8 References: <20220929120632.64749-1-anuj20.g@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Kanchan Joshi Move bio allocation logic from bio_map_user_iov to a new helper blk_rq_map_bio_alloc. It is named so because functionality is opposite of what is done inside blk_mq_map_bio_put. This is a prep patch. Signed-off-by: Kanchan Joshi --- block/blk-map.c | 33 ++++++++++++++++++++++----------- 1 file changed, 22 insertions(+), 11 deletions(-) diff --git a/block/blk-map.c b/block/blk-map.c index d913ef92a9fe..9e37a03b8a21 100644 --- a/block/blk-map.c +++ b/block/blk-map.c @@ -241,17 +241,10 @@ static void blk_mq_map_bio_put(struct bio *bio) } } -static int bio_map_user_iov(struct request *rq, struct iov_iter *iter, - gfp_t gfp_mask) +static struct bio *blk_rq_map_bio_alloc(struct request *rq, + unsigned int nr_vecs, gfp_t gfp_mask) { - unsigned int max_sectors = queue_max_hw_sectors(rq->q); - unsigned int nr_vecs = iov_iter_npages(iter, BIO_MAX_VECS); struct bio *bio; - int ret; - int j; - - if (!iov_iter_count(iter)) - return -EINVAL; if (rq->cmd_flags & REQ_POLLED) { blk_opf_t opf = rq->cmd_flags | REQ_ALLOC_CACHE; @@ -259,13 +252,31 @@ static int bio_map_user_iov(struct request *rq, struct iov_iter *iter, bio = bio_alloc_bioset(NULL, nr_vecs, opf, gfp_mask, &fs_bio_set); if (!bio) - return -ENOMEM; + return NULL; } else { bio = bio_kmalloc(nr_vecs, gfp_mask); if (!bio) - return -ENOMEM; + return NULL; bio_init(bio, NULL, bio->bi_inline_vecs, nr_vecs, req_op(rq)); } + return bio; +} + +static int bio_map_user_iov(struct request *rq, struct iov_iter *iter, + gfp_t gfp_mask) +{ + unsigned int max_sectors = queue_max_hw_sectors(rq->q); + unsigned int nr_vecs = iov_iter_npages(iter, BIO_MAX_VECS); + struct bio *bio; + int ret; + int j; + + if (!iov_iter_count(iter)) + return -EINVAL; + + bio = blk_rq_map_bio_alloc(rq, nr_vecs, gfp_mask); + if (bio == NULL) + return -ENOMEM; while (iov_iter_count(iter)) { struct page **pages, *stack_pages[UIO_FASTIOV];