LU-8998 clio: getstripe support comp layout

[fs/lustre-release.git] / lustre / lov / lov_internal.h

diff --git a/lustre/lov/lov_internal.h b/lustre/lov/lov_internal.h
index c4db325..83b0ff8 100644 (file)
--- a/lustre/lov/lov_internal.h
+++ b/lustre/lov/lov_internal.h
@@ -69,6 +69,30 @@ struct lov_stripe_md {
        struct lov_stripe_md_entry *lsm_entries[];
 };
 
+static inline size_t lov_comp_md_size(const struct lov_stripe_md *lsm)
+{
+       struct lov_stripe_md_entry *lsme;
+       size_t size;
+       int entry;
+
+       if (lsm->lsm_magic == LOV_MAGIC_V1 || lsm->lsm_magic == LOV_MAGIC_V3)
+               return lov_mds_md_size(lsm->lsm_entries[0]->lsme_stripe_count,
+                                      lsm->lsm_entries[0]->lsme_magic);
+
+       LASSERT(lsm->lsm_magic == LOV_MAGIC_COMP_V1);
+
+       size = sizeof(struct lov_comp_md_v1);
+       for (entry = 0; entry < lsm->lsm_entry_count; entry++) {
+               lsme = lsm->lsm_entries[entry];
+
+               size += sizeof(*lsme);
+               size += lov_mds_md_size(lsme->lsme_stripe_count,
+                                       lsme->lsme_magic);
+       }
+
+       return size;
+}
+
 static inline bool lsm_has_objects(struct lov_stripe_md *lsm)
 {
        return lsm != NULL && !lsm->lsm_is_released;