From 735d77d4fd28bd47db9998a3744346302f8c1ee9 Mon Sep 17 00:00:00 2001 From: Guoqing Jiang Date: Thu, 30 Jul 2020 11:13:57 +0200 Subject: rnbd: remove rnbd_dev_submit_io The function only has one caller, so let's open code it in process_rdma. Another bonus is we can avoid push/pop stack, since we need to pass 8 arguments to rnbd_dev_submit_io. Signed-off-by: Guoqing Jiang Acked-by: Danil Kipnis Acked-by: Jack Wang Signed-off-by: Jens Axboe --- drivers/block/rnbd/rnbd-srv-dev.c | 36 +++--------------------------------- drivers/block/rnbd/rnbd-srv-dev.h | 19 +++++-------------- drivers/block/rnbd/rnbd-srv.c | 32 +++++++++++++++++++++++--------- 3 files changed, 31 insertions(+), 56 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/rnbd/rnbd-srv-dev.c b/drivers/block/rnbd/rnbd-srv-dev.c index 5eddfd29ab64..49c62b506c9b 100644 --- a/drivers/block/rnbd/rnbd-srv-dev.c +++ b/drivers/block/rnbd/rnbd-srv-dev.c @@ -45,7 +45,7 @@ void rnbd_dev_close(struct rnbd_dev *dev) kfree(dev); } -static void rnbd_dev_bi_end_io(struct bio *bio) +void rnbd_dev_bi_end_io(struct bio *bio) { struct rnbd_dev_blk_io *io = bio->bi_private; @@ -63,8 +63,8 @@ static void rnbd_dev_bi_end_io(struct bio *bio) * Map the kernel address into a bio suitable for io to a block * device. Returns an error pointer in case of error. */ -static struct bio *rnbd_bio_map_kern(void *data, struct bio_set *bs, - unsigned int len, gfp_t gfp_mask) +struct bio *rnbd_bio_map_kern(void *data, struct bio_set *bs, + unsigned int len, gfp_t gfp_mask) { unsigned long kaddr = (unsigned long)data; unsigned long end = (kaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT; @@ -102,33 +102,3 @@ static struct bio *rnbd_bio_map_kern(void *data, struct bio_set *bs, bio->bi_end_io = bio_put; return bio; } - -int rnbd_dev_submit_io(struct rnbd_dev *dev, sector_t sector, void *data, - size_t len, u32 bi_size, enum rnbd_io_flags flags, - short prio, void *priv) -{ - struct rnbd_dev_blk_io *io; - struct bio *bio; - - /* Generate bio with pages pointing to the rdma buffer */ - bio = rnbd_bio_map_kern(data, dev->ibd_bio_set, len, GFP_KERNEL); - if (IS_ERR(bio)) - return PTR_ERR(bio); - - io = container_of(bio, struct rnbd_dev_blk_io, bio); - - io->dev = dev; - io->priv = priv; - - bio->bi_end_io = rnbd_dev_bi_end_io; - bio->bi_private = io; - bio->bi_opf = rnbd_to_bio_flags(flags); - bio->bi_iter.bi_sector = sector; - bio->bi_iter.bi_size = bi_size; - bio_set_prio(bio, prio); - bio_set_dev(bio, dev->bdev); - - submit_bio(bio); - - return 0; -} diff --git a/drivers/block/rnbd/rnbd-srv-dev.h b/drivers/block/rnbd/rnbd-srv-dev.h index 0f65b09a270e..0eb23850afb9 100644 --- a/drivers/block/rnbd/rnbd-srv-dev.h +++ b/drivers/block/rnbd/rnbd-srv-dev.h @@ -41,6 +41,11 @@ void rnbd_dev_close(struct rnbd_dev *dev); void rnbd_endio(void *priv, int error); +void rnbd_dev_bi_end_io(struct bio *bio); + +struct bio *rnbd_bio_map_kern(void *data, struct bio_set *bs, + unsigned int len, gfp_t gfp_mask); + static inline int rnbd_dev_get_max_segs(const struct rnbd_dev *dev) { return queue_max_segments(bdev_get_queue(dev->bdev)); @@ -75,18 +80,4 @@ static inline int rnbd_dev_get_discard_alignment(const struct rnbd_dev *dev) return bdev_get_queue(dev->bdev)->limits.discard_alignment; } -/** - * rnbd_dev_submit_io() - Submit an I/O to the disk - * @dev: device to that the I/O is submitted - * @sector: address to read/write data to - * @data: I/O data to write or buffer to read I/O date into - * @len: length of @data - * @bi_size: Amount of data that will be read/written - * @prio: IO priority - * @priv: private data passed to @io_fn - */ -int rnbd_dev_submit_io(struct rnbd_dev *dev, sector_t sector, void *data, - size_t len, u32 bi_size, enum rnbd_io_flags flags, - short prio, void *priv); - #endif /* RNBD_SRV_DEV_H */ diff --git a/drivers/block/rnbd/rnbd-srv.c b/drivers/block/rnbd/rnbd-srv.c index 86e61523907b..0fb94843a495 100644 --- a/drivers/block/rnbd/rnbd-srv.c +++ b/drivers/block/rnbd/rnbd-srv.c @@ -124,6 +124,9 @@ static int process_rdma(struct rtrs_srv *sess, struct rnbd_srv_sess_dev *sess_dev; u32 dev_id; int err; + struct rnbd_dev_blk_io *io; + struct bio *bio; + short prio; priv = kmalloc(sizeof(*priv), GFP_KERNEL); if (!priv) @@ -142,18 +145,29 @@ static int process_rdma(struct rtrs_srv *sess, priv->sess_dev = sess_dev; priv->id = id; - err = rnbd_dev_submit_io(sess_dev->rnbd_dev, le64_to_cpu(msg->sector), - data, datalen, le32_to_cpu(msg->bi_size), - le32_to_cpu(msg->rw), - srv_sess->ver < RNBD_PROTO_VER_MAJOR || - usrlen < sizeof(*msg) ? - 0 : le16_to_cpu(msg->prio), priv); - if (unlikely(err)) { - rnbd_srv_err(sess_dev, "Submitting I/O to device failed, err: %d\n", - err); + /* Generate bio with pages pointing to the rdma buffer */ + bio = rnbd_bio_map_kern(data, sess_dev->rnbd_dev->ibd_bio_set, datalen, GFP_KERNEL); + if (IS_ERR(bio)) { + rnbd_srv_err(sess_dev, "Failed to generate bio, err: %ld\n", PTR_ERR(bio)); goto sess_dev_put; } + io = container_of(bio, struct rnbd_dev_blk_io, bio); + io->dev = sess_dev->rnbd_dev; + io->priv = priv; + + bio->bi_end_io = rnbd_dev_bi_end_io; + bio->bi_private = io; + bio->bi_opf = rnbd_to_bio_flags(le32_to_cpu(msg->rw)); + bio->bi_iter.bi_sector = le64_to_cpu(msg->sector); + bio->bi_iter.bi_size = le32_to_cpu(msg->bi_size); + prio = srv_sess->ver < RNBD_PROTO_VER_MAJOR || + usrlen < sizeof(*msg) ? 0 : le16_to_cpu(msg->prio); + bio_set_prio(bio, prio); + bio_set_dev(bio, sess_dev->rnbd_dev->bdev); + + submit_bio(bio); + return 0; sess_dev_put: -- cgit v1.2.3 From d7aaeef293404bc41ea9d51c20a518945eb38366 Mon Sep 17 00:00:00 2001 From: Guoqing Jiang Date: Thu, 30 Jul 2020 11:13:58 +0200 Subject: rnbd: no need to set bi_end_io in rnbd_bio_map_kern Since we always set bi_end_io after call rnbd_bio_map_kern, so the setting in rnbd_bio_map_kern is redundant. Signed-off-by: Guoqing Jiang Acked-by: Danil Kipnis Acked-by: Jack Wang Signed-off-by: Jens Axboe --- drivers/block/rnbd/rnbd-srv-dev.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/block') diff --git a/drivers/block/rnbd/rnbd-srv-dev.c b/drivers/block/rnbd/rnbd-srv-dev.c index 49c62b506c9b..b241a099aeae 100644 --- a/drivers/block/rnbd/rnbd-srv-dev.c +++ b/drivers/block/rnbd/rnbd-srv-dev.c @@ -99,6 +99,5 @@ struct bio *rnbd_bio_map_kern(void *data, struct bio_set *bs, offset = 0; } - bio->bi_end_io = bio_put; return bio; } -- cgit v1.2.3 From fe6a8fc5ed2f0081f17375ae2005718522c392c6 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Mon, 10 Aug 2020 19:16:32 +0200 Subject: loop: unset GENHD_FL_NO_PART_SCAN on LOOP_CONFIGURE When LOOP_CONFIGURE is used with LO_FLAGS_PARTSCAN we need to propagate this into the GENHD_FL_NO_PART_SCAN. LOOP_SETSTATUS does this, LOOP_CONFIGURE doesn't so far. Effect is that setting up a loopback device with partition scanning doesn't actually work when LOOP_CONFIGURE is issued, though it works fine with LOOP_SETSTATUS. Let's correct that and propagate the flag in LOOP_CONFIGURE too. Fixes: 3448914e8cc5("loop: Add LOOP_CONFIGURE ioctl") Signed-off-by: Lennart Poettering Acked-by: Martijn Coenen Signed-off-by: Jens Axboe --- drivers/block/loop.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/block') diff --git a/drivers/block/loop.c b/drivers/block/loop.c index d18160146226..2f137d6ce169 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -1171,6 +1171,8 @@ static int loop_configure(struct loop_device *lo, fmode_t mode, if (part_shift) lo->lo_flags |= LO_FLAGS_PARTSCAN; partscan = lo->lo_flags & LO_FLAGS_PARTSCAN; + if (partscan) + lo->lo_disk->flags &= ~GENHD_FL_NO_PART_SCAN; /* Grab the block_device to prevent its destruction after we * put /dev/loopXX inode. Later in __loop_clr_fd() we bdput(bdev). -- cgit v1.2.3