dm thin: generate event when metadata threshold passed

[karo-tx-linux.git] / drivers / md / dm-thin-metadata.h

diff --git a/drivers/md/dm-thin-metadata.h b/drivers/md/dm-thin-metadata.h
index ef8dd709e34e2371c721be5c6a9b497f28a342b4..845ebbe589a9e0a00505bab0150df48331233928 100644 (file)
--- a/drivers/md/dm-thin-metadata.h
+++ b/drivers/md/dm-thin-metadata.h
@@ -8,6 +8,7 @@
 #define DM_THIN_METADATA_H
 
 #include "persistent-data/dm-block-manager.h"
+#include "persistent-data/dm-space-map.h"
 
 #define THIN_METADATA_BLOCK_SIZE 4096
 
@@ -193,6 +194,11 @@ int dm_pool_resize_metadata_dev(struct dm_pool_metadata *pmd, dm_block_t new_siz
  */
 void dm_pool_metadata_read_only(struct dm_pool_metadata *pmd);
 
+int dm_pool_register_metadata_threshold(struct dm_pool_metadata *pmd,
+                                       dm_block_t threshold,
+                                       dm_sm_threshold_fn fn,
+                                       void *context);
+
 /*----------------------------------------------------------------*/
 
 #endif