LU-13440 lmv: add default LMV inherit depth

[fs/lustre-release.git] / lustre / lod / lod_internal.h

diff --git a/lustre/lod/lod_internal.h b/lustre/lod/lod_internal.h
index 241a77c..53664b9 100644 (file)
--- a/lustre/lod/lod_internal.h
+++ b/lustre/lod/lod_internal.h
@@ -182,6 +182,8 @@ struct lod_default_striping {
        __u32                           lds_dir_def_stripe_count;
        __u32                           lds_dir_def_stripe_offset;
        __u32                           lds_dir_def_hash_type;
+       __u8                            lds_dir_def_max_inherit;
+       __u8                            lds_dir_def_max_inherit_rr;
                                        /* default file striping flags (LOV) */
        __u32                           lds_def_striping_set:1,
                                        lds_def_striping_is_composite:1,
@@ -189,6 +191,27 @@ struct lod_default_striping {
                                        lds_dir_def_striping_set:1;
 };
 
+static inline __u8 lmv_inherit_next(__u8 inherit)
+{
+       if (inherit == LMV_INHERIT_END || inherit == LMV_INHERIT_NONE)
+               return LMV_INHERIT_NONE;
+
+       if (inherit == LMV_INHERIT_UNLIMITED || inherit > LMV_INHERIT_MAX)
+               return inherit;
+
+       return inherit - 1;
+}
+
+static inline __u8 lmv_inherit_rr_next(__u8 inherit_rr)
+{
+       if (inherit_rr == LMV_INHERIT_RR_NONE ||
+           inherit_rr == LMV_INHERIT_RR_UNLIMITED ||
+           inherit_rr > LMV_INHERIT_RR_MAX)
+               return inherit_rr;
+
+       return inherit_rr - 1;
+}
+
 struct lod_mirror_entry {
        __u16   lme_stale:1,
                lme_prefer:1;