Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:4 as permitted sender) client-ip=2620:137:e000::3:4;
From:   Wenchao Hao <haowenchao2@huawei.com>
To:     "James E . J . Bottomley" <jejb@linux.ibm.com>,
        "Martin K . Petersen" <martin.petersen@oracle.com>,
        <linux-scsi@vger.kernel.org>
CC:     <linux-kernel@vger.kernel.org>, <louhongxiang@huawei.com>,
        Wenchao Hao <haowenchao2@huawei.com>
Subject: [PATCH v2 2/2] scsi: Add comment of target_destroy in scsi_host_template
Date:   Mon, 16 Oct 2023 10:08:47 +0800
Message-ID: <20231016020847.1270258-3-haowenchao2@huawei.com>
In-Reply-To: <20231016020847.1270258-1-haowenchao2@huawei.com>
References: <20231016020847.1270258-1-haowenchao2@huawei.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 7BIT
Content-Type:   text/plain; charset=US-ASCII
Precedence: bulk

Add comment to tell callback function target_destroy of
scsi_host_template is called in atomic context.

Signed-off-by: Wenchao Hao <haowenchao2@huawei.com>
---
 include/scsi/scsi_host.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 49f768d0ff37..2e8d77441064 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -245,6 +245,9 @@ struct scsi_host_template {
 	 * midlayer calls this point so that the driver may deallocate
 	 * and terminate any references to the target.
 	 *
+	 * Note: this callback in called with spin_lock shost->host_lock held,
+	 * so donot call functions might cause schedule
+	 *
 	 * Status: OPTIONAL
 	 */
 	void (* target_destroy)(struct scsi_target *);
-- 
2.32.0