From f7de4886fe8f008ac4f7beeacd9bedb6b91241f5 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 9 Sep 2022 15:15:09 +0200 Subject: [PATCH] rnbd-srv: remove struct rnbd_dev Given that rnbd_srv_sess_dev already has an open_flags member, there is no need for the rnbd_dev indirection as a simple block_device pointer works just as well. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Acked-by: Jack Wang Link: https://lore.kernel.org/r/20220909131509.3263924-5-hch@lst.de Signed-off-by: Jens Axboe --- drivers/block/rnbd/rnbd-srv-dev.h | 20 -------------- drivers/block/rnbd/rnbd-srv.c | 46 ++++++++++++------------------- drivers/block/rnbd/rnbd-srv.h | 2 +- 3 files changed, 18 insertions(+), 50 deletions(-) delete mode 100644 drivers/block/rnbd/rnbd-srv-dev.h diff --git a/drivers/block/rnbd/rnbd-srv-dev.h b/drivers/block/rnbd/rnbd-srv-dev.h deleted file mode 100644 index abaf77d68e5b..000000000000 --- a/drivers/block/rnbd/rnbd-srv-dev.h +++ /dev/null @@ -1,20 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * RDMA Network Block Driver - * - * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved. - * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved. - * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved. - */ -#ifndef RNBD_SRV_DEV_H -#define RNBD_SRV_DEV_H - -#include -#include "rnbd-proto.h" - -struct rnbd_dev { - struct block_device *bdev; - fmode_t blk_open_flags; -}; - -#endif /* RNBD_SRV_DEV_H */ diff --git a/drivers/block/rnbd/rnbd-srv.c b/drivers/block/rnbd/rnbd-srv.c index e9c8a722d9c5..08b041159cd3 100644 --- a/drivers/block/rnbd/rnbd-srv.c +++ b/drivers/block/rnbd/rnbd-srv.c @@ -13,7 +13,6 @@ #include #include "rnbd-srv.h" -#include "rnbd-srv-dev.h" #include "rnbd-srv-trace.h" MODULE_DESCRIPTION("RDMA Network Block Device Server"); @@ -146,7 +145,7 @@ static int process_rdma(struct rnbd_srv_session *srv_sess, priv->sess_dev = sess_dev; priv->id = id; - bio = bio_alloc(sess_dev->rnbd_dev->bdev, 1, + bio = bio_alloc(sess_dev->bdev, 1, rnbd_to_bio_flags(le32_to_cpu(msg->rw)), GFP_KERNEL); if (bio_add_page(bio, virt_to_page(data), datalen, offset_in_page(data)) != datalen) { @@ -220,9 +219,7 @@ void rnbd_destroy_sess_dev(struct rnbd_srv_sess_dev *sess_dev, bool keep_id) rnbd_put_sess_dev(sess_dev); wait_for_completion(&dc); /* wait for inflights to drop to zero */ - blkdev_put(sess_dev->rnbd_dev->bdev, - sess_dev->rnbd_dev->blk_open_flags); - kfree(sess_dev->rnbd_dev); + blkdev_put(sess_dev->bdev, sess_dev->open_flags); mutex_lock(&sess_dev->dev->lock); list_del(&sess_dev->dev_list); if (sess_dev->open_flags & FMODE_WRITE) @@ -513,14 +510,14 @@ static int rnbd_srv_check_update_open_perm(struct rnbd_srv_dev *srv_dev, } static struct rnbd_srv_dev * -rnbd_srv_get_or_create_srv_dev(struct rnbd_dev *rnbd_dev, +rnbd_srv_get_or_create_srv_dev(struct block_device *bdev, struct rnbd_srv_session *srv_sess, enum rnbd_access_mode access_mode) { int ret; struct rnbd_srv_dev *new_dev, *dev; - new_dev = rnbd_srv_init_srv_dev(rnbd_dev->bdev); + new_dev = rnbd_srv_init_srv_dev(bdev); if (IS_ERR(new_dev)) return new_dev; @@ -540,7 +537,7 @@ rnbd_srv_get_or_create_srv_dev(struct rnbd_dev *rnbd_dev, static void rnbd_srv_fill_msg_open_rsp(struct rnbd_msg_open_rsp *rsp, struct rnbd_srv_sess_dev *sess_dev) { - struct block_device *bdev = sess_dev->rnbd_dev->bdev; + struct block_device *bdev = sess_dev->bdev; rsp->hdr.type = cpu_to_le16(RNBD_MSG_OPEN_RSP); rsp->device_id = cpu_to_le32(sess_dev->device_id); @@ -565,7 +562,7 @@ static void rnbd_srv_fill_msg_open_rsp(struct rnbd_msg_open_rsp *rsp, static struct rnbd_srv_sess_dev * rnbd_srv_create_set_sess_dev(struct rnbd_srv_session *srv_sess, const struct rnbd_msg_open *open_msg, - struct rnbd_dev *rnbd_dev, fmode_t open_flags, + struct block_device *bdev, fmode_t open_flags, struct rnbd_srv_dev *srv_dev) { struct rnbd_srv_sess_dev *sdev = rnbd_sess_dev_alloc(srv_sess); @@ -577,7 +574,7 @@ rnbd_srv_create_set_sess_dev(struct rnbd_srv_session *srv_sess, strscpy(sdev->pathname, open_msg->dev_name, sizeof(sdev->pathname)); - sdev->rnbd_dev = rnbd_dev; + sdev->bdev = bdev; sdev->sess = srv_sess; sdev->dev = srv_dev; sdev->open_flags = open_flags; @@ -684,9 +681,9 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess, struct rnbd_srv_dev *srv_dev; struct rnbd_srv_sess_dev *srv_sess_dev; const struct rnbd_msg_open *open_msg = msg; + struct block_device *bdev; fmode_t open_flags; char *full_path; - struct rnbd_dev *rnbd_dev; struct rnbd_msg_open_rsp *rsp = data; trace_process_msg_open(srv_sess, open_msg); @@ -723,33 +720,25 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess, goto reject; } - rnbd_dev = kzalloc(sizeof(*rnbd_dev), GFP_KERNEL); - if (!rnbd_dev) { - ret = -ENOMEM; - goto free_path; - } - - rnbd_dev->blk_open_flags = open_flags; - rnbd_dev->bdev = blkdev_get_by_path(full_path, open_flags, THIS_MODULE); - if (IS_ERR(rnbd_dev->bdev)) { - ret = PTR_ERR(rnbd_dev->bdev); + bdev = blkdev_get_by_path(full_path, open_flags, THIS_MODULE); + if (IS_ERR(bdev)) { + ret = PTR_ERR(bdev); pr_err("Opening device '%s' on session %s failed, failed to open the block device, err: %d\n", full_path, srv_sess->sessname, ret); - kfree(rnbd_dev); goto free_path; } - srv_dev = rnbd_srv_get_or_create_srv_dev(rnbd_dev, srv_sess, + srv_dev = rnbd_srv_get_or_create_srv_dev(bdev, srv_sess, open_msg->access_mode); if (IS_ERR(srv_dev)) { pr_err("Opening device '%s' on session %s failed, creating srv_dev failed, err: %ld\n", full_path, srv_sess->sessname, PTR_ERR(srv_dev)); ret = PTR_ERR(srv_dev); - goto rnbd_dev_close; + goto blkdev_put; } srv_sess_dev = rnbd_srv_create_set_sess_dev(srv_sess, open_msg, - rnbd_dev, open_flags, + bdev, open_flags, srv_dev); if (IS_ERR(srv_sess_dev)) { pr_err("Opening device '%s' on session %s failed, creating sess_dev failed, err: %ld\n", @@ -764,7 +753,7 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess, */ mutex_lock(&srv_dev->lock); if (!srv_dev->dev_kobj.state_in_sysfs) { - ret = rnbd_srv_create_dev_sysfs(srv_dev, rnbd_dev->bdev); + ret = rnbd_srv_create_dev_sysfs(srv_dev, bdev); if (ret) { mutex_unlock(&srv_dev->lock); rnbd_srv_err(srv_sess_dev, @@ -806,9 +795,8 @@ srv_dev_put: mutex_unlock(&srv_dev->lock); } rnbd_put_srv_dev(srv_dev); -rnbd_dev_close: - blkdev_put(rnbd_dev->bdev, rnbd_dev->blk_open_flags); - kfree(rnbd_dev); +blkdev_put: + blkdev_put(bdev, open_flags); free_path: kfree(full_path); reject: diff --git a/drivers/block/rnbd/rnbd-srv.h b/drivers/block/rnbd/rnbd-srv.h index 081bceaf4ae9..f5962fd31d62 100644 --- a/drivers/block/rnbd/rnbd-srv.h +++ b/drivers/block/rnbd/rnbd-srv.h @@ -46,7 +46,7 @@ struct rnbd_srv_dev { struct rnbd_srv_sess_dev { /* Entry inside rnbd_srv_dev struct */ struct list_head dev_list; - struct rnbd_dev *rnbd_dev; + struct block_device *bdev; struct rnbd_srv_session *sess; struct rnbd_srv_dev *dev; struct kobject kobj; -- 2.34.1