[SCSI] correct attribute_container list usage

One of the changes in the attribute_container code in the scsi-misc tree
was to add a lock to protect the list of devices per container.  This,
unfortunately, leads to potential scheduling while atomic problems if
there's a sleep in the function called by a trigger.

The correct solution is to use the kernel klist infrastructure instead
which allows lockless traversal of a list.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/attribute_container.h b/include/linux/attribute_container.h
index ee83fe64a102..93bfb0beb62a 100644
--- a/include/linux/attribute_container.h
+++ b/include/linux/attribute_container.h
@@ -11,12 +11,12 @@
 
 #include <linux/device.h>
 #include <linux/list.h>
+#include <linux/klist.h>
 #include <linux/spinlock.h>
 
 struct attribute_container {
         struct list_head        node;
-        struct list_head        containers;
-        spinlock_t              containers_lock;
+        struct klist            containers;
         struct class            *class;
         struct class_device_attribute **attrs;
         int (*match)(struct attribute_container *, struct device *);