slab: overloading the RCU head over the LRU for RCU free

[mirror_ubuntu-zesty-kernel.git] / include / linux / mm_types.h

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index faf4b7c1ad12702db919bd03a448741b7e579789..959cb369b197f626f01c4919087a7c33ebeebaf9 100644 (file)
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -130,6 +130,9 @@ struct page {
 
                struct list_head list;  /* slobs list of pages */
                struct slab *slab_page; /* slab fields */
+               struct rcu_head rcu_head;       /* Used by SLAB
+                                                * when destroying via RCU
+                                                */
        };
 
        /* Remainder is not double word aligned */