Merge tag 'gcc-plugins-v4.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/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 05db56e..aa10b14 100644 (file)
--- a/drivers/md/dm-cache-policy.h
+++ b/drivers/md/dm-cache-policy.h
@@ -90,9 +90,6 @@ struct policy_result {
        dm_cblock_t cblock;     /* POLICY_HIT, POLICY_NEW, POLICY_REPLACE */
 };
 
-typedef int (*policy_walk_fn)(void *context, dm_cblock_t cblock,
-                             dm_oblock_t oblock, uint32_t hint);
-
 /*
  * The cache policy object.  Just a bunch of methods.  It is envisaged that
  * this structure will be embedded in a bigger, policy specific structure
@@ -158,8 +155,11 @@ struct dm_cache_policy {
        int (*load_mapping)(struct dm_cache_policy *p, dm_oblock_t oblock,
                            dm_cblock_t cblock, uint32_t hint, bool hint_valid);
 
-       int (*walk_mappings)(struct dm_cache_policy *p, policy_walk_fn fn,
-                            void *context);
+       /*
+        * Gets the hint for a given cblock.  Called in a single threaded
+        * context.  So no locking required.
+        */
+       uint32_t (*get_hint)(struct dm_cache_policy *p, dm_cblock_t cblock);
 
        /*
         * Override functions used on the error paths of the core target.