dm: support barriers on simple devices

[linux-2.6-omap-h63xx.git] / include / linux / mm_types.h

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index fe825471d5aaf9d59440a7f322989004736ea71f..9cfc9b627fdd745d4702a903e29db36f2676aa34 100644 (file)
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -232,8 +232,9 @@ struct mm_struct {
        struct core_state *core_state; /* coredumping support */
 
        /* aio bits */
-       rwlock_t                ioctx_list_lock;        /* aio lock */
-       struct kioctx           *ioctx_list;
+       spinlock_t              ioctx_lock;
+       struct hlist_head       ioctx_list;
+
 #ifdef CONFIG_MM_OWNER
        /*
         * "owner" points to a task that is regarded as the canonical