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[95.90.238.229]) by smtp.googlemail.com with ESMTPSA id g22sm8701833ejz.46.2021.04.19.00.38.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Apr 2021 00:38:02 -0700 (PDT) From: Gioh Kim To: linux-block@vger.kernel.org, linux-doc@vger.kernel.org Cc: axboe@kernel.dk, akinobu.mita@gmail.com, corbet@lwn.net, hch@infradead.org, sagi@grimberg.me, bvanassche@acm.org, haris.iqbal@ionos.com, jinpu.wang@ionos.com, Md Haris Iqbal , Gioh Kim Subject: [PATCHv5 for-next 16/19] block/rnbd-clt: Generate kobject_uevent when the rnbd device state changes Date: Mon, 19 Apr 2021 09:37:19 +0200 Message-Id: <20210419073722.15351-17-gi-oh.kim@ionos.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210419073722.15351-1-gi-oh.kim@ionos.com> References: <20210419073722.15351-1-gi-oh.kim@ionos.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org From: Md Haris Iqbal When an RTRS session state changes, the transport layer generates an event to RNBD. Then RNBD will change the state of the RNBD client device accordingly. This commit add kobject_uevent when the RNBD device state changes. With this udev rules can be configured to react accordingly. Signed-off-by: Md Haris Iqbal Signed-off-by: Jack Wang Signed-off-by: Gioh Kim --- drivers/block/rnbd/rnbd-clt-sysfs.c | 1 + drivers/block/rnbd/rnbd-clt.c | 9 ++++++++- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/block/rnbd/rnbd-clt-sysfs.c b/drivers/block/rnbd/rnbd-clt-sysfs.c index 2b6305ecfd5f..f3a5a62b2062 100644 --- a/drivers/block/rnbd/rnbd-clt-sysfs.c +++ b/drivers/block/rnbd/rnbd-clt-sysfs.c @@ -490,6 +490,7 @@ static int rnbd_clt_add_dev_kobj(struct rnbd_clt_dev *dev) ret); kobject_put(&dev->kobj); } + kobject_uevent(gd_kobj, KOBJ_ONLINE); return ret; } diff --git a/drivers/block/rnbd/rnbd-clt.c b/drivers/block/rnbd/rnbd-clt.c index ea98124e8ce9..01f67e08afc3 100644 --- a/drivers/block/rnbd/rnbd-clt.c +++ b/drivers/block/rnbd/rnbd-clt.c @@ -110,6 +110,7 @@ static int rnbd_clt_change_capacity(struct rnbd_clt_dev *dev, static int process_msg_open_rsp(struct rnbd_clt_dev *dev, struct rnbd_msg_open_rsp *rsp) { + struct kobject *gd_kobj; int err = 0; mutex_lock(&dev->lock); @@ -128,6 +129,8 @@ static int process_msg_open_rsp(struct rnbd_clt_dev *dev, */ if (dev->nsectors != nsectors) rnbd_clt_change_capacity(dev, nsectors); + gd_kobj = &disk_to_dev(dev->gd)->kobj; + kobject_uevent(gd_kobj, KOBJ_ONLINE); rnbd_clt_info(dev, "Device online, device remapped successfully\n"); } err = rnbd_clt_set_dev_attr(dev, rsp); @@ -649,14 +652,18 @@ static int send_msg_sess_info(struct rnbd_clt_session *sess, enum wait_type wait static void set_dev_states_to_disconnected(struct rnbd_clt_session *sess) { struct rnbd_clt_dev *dev; + struct kobject *gd_kobj; mutex_lock(&sess->lock); list_for_each_entry(dev, &sess->devs_list, list) { rnbd_clt_err(dev, "Device disconnected.\n"); mutex_lock(&dev->lock); - if (dev->dev_state == DEV_STATE_MAPPED) + if (dev->dev_state == DEV_STATE_MAPPED) { dev->dev_state = DEV_STATE_MAPPED_DISCONNECTED; + gd_kobj = &disk_to_dev(dev->gd)->kobj; + kobject_uevent(gd_kobj, KOBJ_OFFLINE); + } mutex_unlock(&dev->lock); } mutex_unlock(&sess->lock); -- 2.25.1