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

Signed-off-by: Wenchao Hao <[email protected]>
---
 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..a72248fa5adf 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 held, so donot
+        * call functions might cause schedule
+        *
         * Status: OPTIONAL
         */
        void (* target_destroy)(struct scsi_target *);
-- 
2.32.0

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