dm cache: add passthrough mode

[cascardo/linux.git] / drivers / md / dm-cache-metadata.h

diff --git a/drivers/md/dm-cache-metadata.h b/drivers/md/dm-cache-metadata.h
index f45cef2..cd906f1 100644 (file)
--- a/drivers/md/dm-cache-metadata.h
+++ b/drivers/md/dm-cache-metadata.h
@@ -137,6 +137,11 @@ int dm_cache_begin_hints(struct dm_cache_metadata *cmd, struct dm_cache_policy *
 int dm_cache_save_hint(struct dm_cache_metadata *cmd,
                       dm_cblock_t cblock, uint32_t hint);
 
+/*
+ * Query method.  Are all the blocks in the cache clean?
+ */
+int dm_cache_metadata_all_clean(struct dm_cache_metadata *cmd, bool *result);
+
 /*----------------------------------------------------------------*/
 
 #endif /* DM_CACHE_METADATA_H */