scsi_debug: take sdebug_host_list_lock when changing capacity
All other traversals of the sdebug_host_list take the lock.
Signed-off-by: Ewan D. Milne <emilne@redhat.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 2e32a4c..0d0e059 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -4438,6 +4438,7 @@
struct sdebug_host_info *sdhp;
struct sdebug_dev_info *dp;
+ spin_lock(&sdebug_host_list_lock);
list_for_each_entry(sdhp, &sdebug_host_list,
host_list) {
list_for_each_entry(dp, &sdhp->dev_info_list,
@@ -4446,6 +4447,7 @@
dp->uas_bm);
}
}
+ spin_unlock(&sdebug_host_list_lock);
}
return count;
}