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Wed, 17 Jun 2020 17:27:00 +0000 (GMT) From: Kanchan Joshi To: axboe@kernel.dk, viro@zeniv.linux.org.uk, bcrl@kvack.org Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-aio@kvack.org, io-uring@vger.kernel.org, linux-block@vger.kernel.org, selvakuma.s1@samsung.com, nj.shetty@samsung.com, javier.gonz@samsung.com, Kanchan Joshi Subject: [PATCH 1/3] fs,block: Introduce IOCB_ZONE_APPEND and direct-io handling Date: Wed, 17 Jun 2020 22:53:37 +0530 Message-Id: <1592414619-5646-2-git-send-email-joshi.k@samsung.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592414619-5646-1-git-send-email-joshi.k@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrOIsWRmVeSWpSXmKPExsWy7bCmlm560Ks4g1VNBhar7/azWXT928Ji 8a71HIvF4zuf2S2O/n/LZrFw4zImiynTmhgt9t7Sttiz9ySLxeVdc9gstv2ez2xxZcoiZovX P06yWZz/e5zVgc/j8tlSj02fJrF79G1ZxejxeZOcx6Ynb5kCWKO4bFJSczLLUov07RK4MvZ/ usNW8Fy4oufuC+YGxiaBLkYODgkBE4kDL6y7GLk4hAR2M0q8Xt7ECuF8YpTonLAAyvnGKHH7 wl32LkZOsI67h9cyQiT2MkpM2HiLCcL5zCjxcuceJpC5bAKaEhcml4KYIgI2EjuXqID0Mgs0 MEn8/64DYgsLBEk8WnKaGcRmEVCV+P/6HiOIzSvgJPHg6SIWiF1yEjfPdYLVcAo4S8zefAns IAmBRg6JrXtfM0IUuUi8fbiVFcIWlnh1fAvUoVISL/vboOxiiV93jjJDNHcwSlxvmAm1wV7i 4p6/YDczA928fpc+xKF8Er2/nzBBgohXoqNNCKJaUeLepKdQq8QlHs5YAmV7SCz8f5QJxBYS mMYo0f3UewKj7CyEoQsYGVcxSqYWFOempxabFhjnpZbrFSfmFpfmpesl5+duYgSnDS3vHYyP HnzQO8TIxMF4iFGCg1lJhNf594s4Id6UxMqq1KL8+KLSnNTiQ4zSHCxK4rxKP87ECQmkJ5ak ZqemFqQWwWSZODilGphiC3UW7UqavHaW4Zc71is4V16L1GNp9XjZkv/k7bv8F1XLmm65z/ny 9qjmjI1JPoqLBKXFIzLf7ny+xWLrNO4VDgZ5e6Ntj2Y0ZzM4yl3mKwxPc/7Vk8IyQVh2lmN4 q2Kk9EetP+e3tPBL3TO8vCvXr35C5V+mn9HNnJp660VZX7PuNco8YXnD7a9BfZ9hRMq9+RxB PAmrG+49mjbpccWyVRvvC5w8v8f3yN4/nAubnjt7V1dyOb1fb8wbETXPwvnsU6XqvudH1vxd +V7bR1S7K/mpgp2vY9OEvNYV32ZfVp2R4p9yVr8+RypqVvfVro1CvTlX9b8LnEj72mRl09su ITDtfMHl6neciw68DVFiKc5INNRiLipOBAAouxsVigMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrBLMWRmVeSWpSXmKPExsWy7bCSnG5a0Ks4g5mXFC1W3+1ns+j6t4XF 4l3rORaLx3c+s1sc/f+WzWLhxmVMFlOmNTFa7L2lbbFn70kWi8u75rBZbPs9n9niypRFzBav f5xkszj/9zirA5/H5bOlHps+TWL36NuyitHj8yY5j01P3jIFsEZx2aSk5mSWpRbp2yVwZez/ dIet4LlwRc/dF8wNjE0CXYycHBICJhJ3D69l7GLk4hAS2M0o8XbdTlaIhLhE87Uf7BC2sMTK f8/ZIYo+Mkpcu7sAqIODg01AU+LC5FKQGhEBB4mu44+ZQGqYBbqYJE7c3MUEkhAWCJC4dOsa I4jNIqAq8f/1PTCbV8BJ4sHTRSwQC+Qkbp7rZAaxOQWcJWZvvgR2hBBQzZ9Fs1gnMPItYGRY xSiZWlCcm55bbFhgmJdarlecmFtcmpeul5yfu4kRHLhamjsYt6/6oHeIkYmD8RCjBAezkgiv 8+8XcUK8KYmVValF+fFFpTmpxYcYpTlYlMR5bxQujBMSSE8sSc1OTS1ILYLJMnFwSjUwWf9s P+lbwnJAaKomq5bYe1PTjVyTN7tcEs359HVrMcdGj33Hq6Wf3RI8t/2M+LKC8z8T/z9R3L8h csO/txeyPGbcY59zcfvE1aU191kmHdt4OD5yn+7t8+ecpycKXQx3Wth1s6Rgmv2ntoC/2RG3 wwJzl7s+bSvTkJ53en3x040fIiSNHi/YrnLybRnDg6z/HowhH0v1fBNXxB+Ses2RweR+aLfy 1iqDux/vdBd1p07XWNWk8k3k49JGb1ERv/eGdVP2N173ddKYve019z8R1i/37uswfy1eyO8+ P+HZl831mWuUt+3kfq2nYZNybsHvG01fpsfOC5554tecGSXRu3+H/k3awWWQV3T5zabZpdFK LMUZiYZazEXFiQD71pzvywIAAA== X-CMS-MailID: 20200617172702epcas5p4dbf4729d31d9a85ab1d261d04f238e61 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" CMS-TYPE: 105P X-CMS-RootMailID: 20200617172702epcas5p4dbf4729d31d9a85ab1d261d04f238e61 References: <1592414619-5646-1-git-send-email-joshi.k@samsung.com> Sender: io-uring-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org From: Selvakumar S Introduce IOCB_ZONE_APPEND flag, which is set in kiocb->ki_flags for zone-append. Direct I/O submission path uses this flag to send bio with append op. And completion path uses the same to return zone-relative offset to upper layer. Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi Signed-off-by: Nitesh Shetty Signed-off-by: Javier Gonzalez --- fs/block_dev.c | 19 ++++++++++++++++++- include/linux/fs.h | 1 + 2 files changed, 19 insertions(+), 1 deletion(-) diff --git a/fs/block_dev.c b/fs/block_dev.c index 47860e5..4c84b4d0 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -185,6 +185,10 @@ static unsigned int dio_bio_write_op(struct kiocb *iocb) /* avoid the need for a I/O completion work item */ if (iocb->ki_flags & IOCB_DSYNC) op |= REQ_FUA; +#ifdef CONFIG_BLK_DEV_ZONED + if (iocb->ki_flags & IOCB_ZONE_APPEND) + op |= REQ_OP_ZONE_APPEND | REQ_NOMERGE; +#endif return op; } @@ -295,6 +299,14 @@ static int blkdev_iopoll(struct kiocb *kiocb, bool wait) return blk_poll(q, READ_ONCE(kiocb->ki_cookie), wait); } +#ifdef CONFIG_BLK_DEV_ZONED +static inline long blkdev_bio_end_io_append(struct bio *bio) +{ + return (bio->bi_iter.bi_sector % + blk_queue_zone_sectors(bio->bi_disk->queue)) << SECTOR_SHIFT; +} +#endif + static void blkdev_bio_end_io(struct bio *bio) { struct blkdev_dio *dio = bio->bi_private; @@ -307,15 +319,20 @@ static void blkdev_bio_end_io(struct bio *bio) if (!dio->is_sync) { struct kiocb *iocb = dio->iocb; ssize_t ret; + long res = 0; if (likely(!dio->bio.bi_status)) { ret = dio->size; iocb->ki_pos += ret; +#ifdef CONFIG_BLK_DEV_ZONED + if (iocb->ki_flags & IOCB_ZONE_APPEND) + res = blkdev_bio_end_io_append(bio); +#endif } else { ret = blk_status_to_errno(dio->bio.bi_status); } - dio->iocb->ki_complete(iocb, ret, 0); + dio->iocb->ki_complete(iocb, ret, res); if (dio->multi_bio) bio_put(&dio->bio); } else { diff --git a/include/linux/fs.h b/include/linux/fs.h index 6c4ab4d..dc547b9 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -315,6 +315,7 @@ enum rw_hint { #define IOCB_SYNC (1 << 5) #define IOCB_WRITE (1 << 6) #define IOCB_NOWAIT (1 << 7) +#define IOCB_ZONE_APPEND (1 << 8) struct kiocb { struct file *ki_filp; -- 2.7.4