Merge tag 'omapdrm-fixes-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba...

[karo-tx-linux.git] / drivers / md / dm-cache-policy.h

diff --git a/drivers/md/dm-cache-policy.h b/drivers/md/dm-cache-policy.h
index 052c00a84a5c63a616b24ed0dd156681c880f0c4..f50fe360c5462928522101c2497ee0ef57542cf0 100644 (file)
--- a/drivers/md/dm-cache-policy.h
+++ b/drivers/md/dm-cache-policy.h
@@ -222,6 +222,12 @@ struct dm_cache_policy_type {
        char name[CACHE_POLICY_NAME_SIZE];
        unsigned version[CACHE_POLICY_VERSION_SIZE];
 
+       /*
+        * For use by an alias dm_cache_policy_type to point to the
+        * real dm_cache_policy_type.
+        */
+       struct dm_cache_policy_type *real;
+
        /*
         * Policies may store a hint for each each cache block.
         * Currently the size of this hint must be 0 or 4 bytes but we