Implement mark_clean for ddf and remove mark_dirty and mark_sync

[thirdparty/mdadm.git] / mdadm.h

diff --git a/mdadm.h b/mdadm.h
index 6bf0c6259ce4b17e0348d22b6b52be809de1ce41..9dacdc4df7cbe1a4e2922e455f75f00cf7d05419 100644 (file)
--- a/mdadm.h
+++ b/mdadm.h
@@ -411,9 +411,16 @@ extern struct superswitch {
 
 /* for mdmon */
        int (*open_new)(struct supertype *c, struct active_array *a, int inst);
+       /* This tells the metadata handler that all data up to sync_pos is
+        * known to be insync, and will stay insync until told otherwise.
+        * All data beyond sync_pos may not be insync.
+        * If sync_pos == 0, this marks the array as 'dirty'.
+        * If sync_pos == ~0, this marks it as fully 'clean'.
+        * If other numbers cannot be stored, they should be treated as 0.
+        * mark_clean is always called with a sync_pos of 0 before any
+        * write to an array with redundancy is allowed.
+        */
        void (*mark_clean)(struct active_array *a, unsigned long long sync_pos);
-       void (*mark_dirty)(struct active_array *a);
-       void (*mark_sync)(struct active_array *a, unsigned long long resync);
        void (*set_disk)(struct active_array *a, int n, int state);
        void (*sync_metadata)(struct active_array *a);