Allow more spare selection criteria

[thirdparty/mdadm.git] / mdadm.h

diff --git a/mdadm.h b/mdadm.h
index a92feb2acc8f44933105bc1ac851bc7a80c7b27d..8da7fd3e12a5dc9dd005182aa11d160b5bb5ea7b 100644 (file)
--- a/mdadm.h
+++ b/mdadm.h
@@ -361,6 +361,10 @@ struct createinfo {
        struct supertype *supertype;
 };
 
+struct spare_criteria {
+       unsigned long long min_size;
+};
+
 enum mode {
        ASSEMBLE=1,
        BUILD,
@@ -940,11 +944,13 @@ extern struct superswitch {
         */
        __u64 (*avail_size)(struct supertype *st, __u64 size,
                            unsigned long long data_offset);
-       /* This is similar to 'avail_size' in purpose, but is used for
-        * containers for which there is no 'component size' to compare.
-        * This reports that whole-device size which is a minimum
+       /*
+        * Return spare criteria for array:
+        * - minimum disk size can be used in array;
+        * Return values: 0 - for success and -EINVAL on error.
         */
-       unsigned long long (*min_acceptable_spare_size)(struct supertype *st);
+       int (*get_spare_criteria)(struct supertype *st,
+                                 struct spare_criteria *sc);
        /* Find somewhere to put a bitmap - possibly auto-size it - and
         * update the metadata to record this.  The array may be newly
         * created, in which case data_size may be updated, or it might
@@ -1507,7 +1513,7 @@ extern int assemble_container_content(struct supertype *st, int mdfd,
 #define        INCR_ALREADY    4
 #define        INCR_YES        8
 extern struct mdinfo *container_choose_spares(struct supertype *st,
-                                             unsigned long long min_size,
+                                             struct spare_criteria *criteria,
                                              struct domainlist *domlist,
                                              char *spare_group,
                                              const char *metadata, int get_one);