From 99b07780814e89f16bec2773c237eb25121f8502 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 8 Jun 2023 13:02:51 +0200 Subject: [PATCH] rnbd-srv: replace sess->open_flags with a "bool readonly" Stop passing the fmode_t around and just use a simple bool to track if an export is read-only. Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Acked-by: Christian Brauner Acked-by: Jack Wang Link: https://lore.kernel.org/r/20230608110258.189493-24-hch@lst.de Signed-off-by: Jens Axboe --- drivers/block/rnbd/rnbd-srv-sysfs.c | 3 +-- drivers/block/rnbd/rnbd-srv.c | 15 +++++++-------- drivers/block/rnbd/rnbd-srv.h | 2 +- 3 files changed, 9 insertions(+), 11 deletions(-) diff --git a/drivers/block/rnbd/rnbd-srv-sysfs.c b/drivers/block/rnbd/rnbd-srv-sysfs.c index 4962826..39b89f9 100644 --- a/drivers/block/rnbd/rnbd-srv-sysfs.c +++ b/drivers/block/rnbd/rnbd-srv-sysfs.c @@ -87,8 +87,7 @@ static ssize_t read_only_show(struct kobject *kobj, struct kobj_attribute *attr, sess_dev = container_of(kobj, struct rnbd_srv_sess_dev, kobj); - return sysfs_emit(page, "%d\n", - !(sess_dev->open_flags & FMODE_WRITE)); + return sysfs_emit(page, "%d\n", sess_dev->readonly); } static struct kobj_attribute rnbd_srv_dev_session_ro_attr = diff --git a/drivers/block/rnbd/rnbd-srv.c b/drivers/block/rnbd/rnbd-srv.c index a909f87..591a1be 100644 --- a/drivers/block/rnbd/rnbd-srv.c +++ b/drivers/block/rnbd/rnbd-srv.c @@ -222,7 +222,7 @@ void rnbd_destroy_sess_dev(struct rnbd_srv_sess_dev *sess_dev, bool keep_id) blkdev_put(sess_dev->bdev, NULL); mutex_lock(&sess_dev->dev->lock); list_del(&sess_dev->dev_list); - if (sess_dev->open_flags & FMODE_WRITE) + if (!sess_dev->readonly) sess_dev->dev->open_write_cnt--; mutex_unlock(&sess_dev->dev->lock); @@ -559,7 +559,7 @@ 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 block_device *bdev, fmode_t open_flags, + struct block_device *bdev, bool readonly, struct rnbd_srv_dev *srv_dev) { struct rnbd_srv_sess_dev *sdev = rnbd_sess_dev_alloc(srv_sess); @@ -574,7 +574,7 @@ rnbd_srv_create_set_sess_dev(struct rnbd_srv_session *srv_sess, sdev->bdev = bdev; sdev->sess = srv_sess; sdev->dev = srv_dev; - sdev->open_flags = open_flags; + sdev->readonly = readonly; sdev->access_mode = open_msg->access_mode; return sdev; @@ -677,13 +677,12 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess, struct rnbd_srv_sess_dev *srv_sess_dev; const struct rnbd_msg_open *open_msg = msg; struct block_device *bdev; - fmode_t open_flags; + fmode_t open_flags = FMODE_READ; char *full_path; struct rnbd_msg_open_rsp *rsp = data; trace_process_msg_open(srv_sess, open_msg); - open_flags = FMODE_READ; if (open_msg->access_mode != RNBD_ACCESS_RO) open_flags |= FMODE_WRITE; @@ -732,9 +731,9 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess, goto blkdev_put; } - srv_sess_dev = rnbd_srv_create_set_sess_dev(srv_sess, open_msg, - bdev, open_flags, - srv_dev); + srv_sess_dev = rnbd_srv_create_set_sess_dev(srv_sess, open_msg, bdev, + open_msg->access_mode == RNBD_ACCESS_RO, + srv_dev); if (IS_ERR(srv_sess_dev)) { pr_err("Opening device '%s' on session %s failed, creating sess_dev failed, err: %ld\n", full_path, srv_sess->sessname, PTR_ERR(srv_sess_dev)); diff --git a/drivers/block/rnbd/rnbd-srv.h b/drivers/block/rnbd/rnbd-srv.h index 6b5e5ad..1027656 100644 --- a/drivers/block/rnbd/rnbd-srv.h +++ b/drivers/block/rnbd/rnbd-srv.h @@ -52,7 +52,7 @@ struct rnbd_srv_sess_dev { struct kobject kobj; u32 device_id; bool keep_id; - fmode_t open_flags; + bool readonly; struct kref kref; struct completion *destroy_comp; char pathname[NAME_MAX]; -- 2.7.4