LU-15971 llite: implicit default LMV inherit

[fs/lustre-release.git] / lustre / include / lustre_lmv.h

diff --git a/lustre/include/lustre_lmv.h b/lustre/include/lustre_lmv.h
index f29dc50..96ae7f6 100644 (file)
--- a/lustre/include/lustre_lmv.h
+++ b/lustre/include/lustre_lmv.h
@@ -81,6 +81,33 @@ static inline bool lmv_dir_bad_hash(const struct lmv_stripe_md *lsm)
        return !lmv_is_known_hash_type(lsm->lsm_md_hash_type);
 }
 
+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;
+}
+
+static inline bool lmv_is_inheritable(__u8 inherit)
+{
+       return inherit == LMV_INHERIT_UNLIMITED ||
+              (inherit > LMV_INHERIT_END && inherit <= LMV_INHERIT_MAX);
+}
+
 static inline bool
 lsm_md_eq(const struct lmv_stripe_md *lsm1, const struct lmv_stripe_md *lsm2)
 {
@@ -146,6 +173,22 @@ static inline void lsm_md_dump(int mask, const struct lmv_stripe_md *lsm)
                       i, PFID(&lsm->lsm_md_oinfo[i].lmo_fid));
 }
 
+static inline bool
+lsm_md_inherited(const struct lmv_stripe_md *plsm,
+                const struct lmv_stripe_md *clsm)
+{
+       return plsm && clsm &&
+              plsm->lsm_md_magic == clsm->lsm_md_magic &&
+              plsm->lsm_md_stripe_count == clsm->lsm_md_stripe_count &&
+              plsm->lsm_md_master_mdt_index ==
+                       clsm->lsm_md_master_mdt_index &&
+              plsm->lsm_md_hash_type == clsm->lsm_md_hash_type &&
+              lmv_inherit_next(plsm->lsm_md_max_inherit) ==
+                       clsm->lsm_md_max_inherit &&
+              lmv_inherit_rr_next(plsm->lsm_md_max_inherit_rr) ==
+                       clsm->lsm_md_max_inherit_rr;
+}
+
 union lmv_mds_md;
 
 void lmv_free_memmd(struct lmv_stripe_md *lsm);
@@ -523,25 +566,4 @@ static inline bool lmv_is_fixed(const struct lmv_mds_md_v1 *lmv)
        return cpu_to_le32(lmv->lmv_hash_type) & LMV_HASH_FLAG_FIXED;
 }
 
-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;
-}
-
 #endif