LU-10070 utils: move new SEL find_param fields to end

Move the new fp_ext_size and fp_ext_size_units fields to the end
of struct find_param so that they don't break the ABI for the
llapi_find() and llapi_getstripe() functions that use it.

Add "unused" fields for the sign and exclude bitfields, so that
it is clear how many more can still be used before we need to
add new fields.

Test-Parameters: trivial
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: Ib15af374774050a9e5b224f7edc7523fdae570c1
Reviewed-on: https://review.whamcloud.com/36554
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Vitaly Fertman <c17818@cray.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>

diff --git a/lustre/include/lustre/lustreapi.h b/lustre/include/lustre/lustreapi.h
index 17b19f8..237dc65 100644 (file)
--- a/lustre/include/lustre/lustreapi.h
+++ b/lustre/include/lustre/lustreapi.h
@@ -214,7 +214,11 @@ struct find_param {
                                 fp_mirror_id_sign:2,
                                 fp_mdt_count_sign:2,
                                 fp_blocks_sign:2,
-                                fp_ext_size_sign:2;
+                                fp_ext_size_sign:2,
+                                fp_unused1_sign:2, /* Fields available to use*/
+                                fp_unused2_sign:2, /* Once used we must add  */
+                                fp_unused3_sign:2, /* a separate flag field  */
+                                fp_unused4_sign:2; /* at end of the struct.  */
        unsigned long long       fp_size;
        unsigned long long       fp_size_units;
 
@@ -274,7 +278,14 @@ struct find_param {
                                 fp_exclude_foreign:1,
                                 fp_check_ext_size:1, /* extension size */
                                 fp_exclude_ext_size:1,
-                                fp_lazy:1;
+                                fp_lazy:1,
+                                fp_unused_bit1:1,
+                                fp_unused_bit2:1, /* All of these unused bit */
+                                fp_unused_bit3:1, /* fields available to use.*/
+                                fp_unused_bit4:1, /* Once all unused fields  */
+                                fp_unused_bit5:1, /* are used we need to add */
+                                fp_unused_bit6:1, /* a separate flag field at*/
+                                fp_unused_bit7:1; /* the end of the struct.  */
 
        enum llapi_layout_verbose fp_verbose;
        int                      fp_quiet;
@@ -325,16 +336,15 @@ struct find_param {
        unsigned                 fp_projid;
        unsigned long long       fp_blocks;
        unsigned long long       fp_blocks_units;
-       unsigned long long       fp_ext_size;
-       unsigned long long       fp_ext_size_units;
 
-       /* In-process parameters. */
        unsigned long            fp_got_uuids:1,
                                 fp_obds_printed:1;
        unsigned int             fp_depth;
        unsigned int             fp_hash_type;
        unsigned int             fp_time_margin; /* time margin in seconds */
        __u32                    fp_foreign_type;
+       unsigned long long       fp_ext_size;
+       unsigned long long       fp_ext_size_units;
 };
 
 int llapi_ostlist(char *path, struct find_param *param);