LU-11376 lov: new foreign LOV format

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

diff --git a/lustre/lod/lod_internal.h b/lustre/lod/lod_internal.h
index 83fb539..4304639 100644 (file)
--- a/lustre/lod/lod_internal.h
+++ b/lustre/lod/lod_internal.h
@@ -306,7 +306,8 @@ struct lod_object {
                        struct lod_mirror_entry *ldo_mirrors;
                        __u32           ldo_is_composite:1,
                                        ldo_flr_state:2,
-                                       ldo_comp_cached:1;
+                                       ldo_comp_cached:1,
+                                       ldo_is_foreign:1;
                };
                /* directory stripe (LMV) */
                struct {
@@ -331,10 +332,19 @@ struct lod_object {
                        struct lod_default_striping     *ldo_def_striping;
                };
        };
-       /* file stripe (LOV) */
-       struct lod_layout_component     *ldo_comp_entries;
-       /* slave stripes of striped directory (LMV) */
-       struct dt_object                **ldo_stripe;
+       union {
+               struct {
+                       /* foreign/raw format LOV */
+                       char                            *ldo_foreign_lov;
+                       size_t                           ldo_foreign_lov_size;
+               };
+               struct {
+                       /* file stripe (LOV) */
+                       struct lod_layout_component     *ldo_comp_entries;
+                       /* slave stripes of striped directory (LMV) */
+                       struct dt_object                **ldo_stripe;
+               };
+       };
 };
 
 #define lod_foreach_mirror_comp(comp, lo, mirror_idx)                      \
@@ -519,6 +529,9 @@ static inline bool lod_obj_is_striped(struct dt_object *dt)
        if (S_ISDIR(dt->do_lu.lo_header->loh_attr))
                return lo->ldo_dir_stripe_count != 0;
 
+       if (lo->ldo_is_foreign)
+               return false;
+
        for (i = 0; i < lo->ldo_comp_cnt; i++) {
                if (lo->ldo_comp_entries[i].llc_stripe == NULL)
                        continue;
@@ -763,6 +776,8 @@ int lod_declare_striped_create(const struct lu_env *env, struct dt_object *dt,
 int lod_striped_create(const struct lu_env *env, struct dt_object *dt,
                        struct lu_attr *attr, struct dt_object_format *dof,
                        struct thandle *th);
+int lod_alloc_foreign_lov(struct lod_object *lo, size_t size);
+void lod_free_foreign_lov(struct lod_object *lo);
 void lod_striping_free_nolock(const struct lu_env *env, struct lod_object *lo);
 void lod_striping_free(const struct lu_env *env, struct lod_object *lo);