- OBD_SLAB_ALLOC_PTR_GFP(lpg, lov_page_kmem, CFS_ALLOC_IO);
- if (lpg != NULL) {
- loff_t offset;
- int stripe;
- obd_off suboff;
- struct cl_page *subpage;
- struct cl_object *subobj;
- struct lov_layout_raid0 *r0 = lov_r0(loo);
-
- offset = cl_offset(obj, page->cp_index);
- stripe = lov_stripe_number(r0->lo_lsm, offset);
- result = lov_stripe_offset(r0->lo_lsm, offset, stripe,
- &suboff);
- LASSERT(stripe < r0->lo_nr);
- LASSERT(result == 0);
-
- subobj = lovsub2cl(r0->lo_sub[stripe]);
- subpage = cl_page_find(env, subobj,
- cl_index(subobj, suboff), vmpage,
- page->cp_type);
- if (!IS_ERR(subpage)) {
- if (subpage->cp_parent != NULL) {
- /*
- * This is only possible when TRANSIENT page
- * is being created, and CACHEABLE sub-page
- * (attached to already existing top-page) has
- * been found. Tell cl_page_find() to use
- * existing page.
- */
- LASSERT(subpage->cp_type == CPT_CACHEABLE);
- LASSERT(page->cp_type == CPT_TRANSIENT);
- lpg->lps_invalid = 1;
- cl_page_put(env, subpage);
- /*
- * XXX This assumes that lov is in the topmost
- * cl_page.
- */
- result = PTR_ERR(cl_page_top(subpage));
- } else {
- lu_ref_add(&subpage->cp_reference, "lov", page);
- subpage->cp_parent = page;
- page->cp_child = subpage;
- }
- cl_page_slice_add(page, &lpg->lps_cl,
- obj, &lov_page_ops);
- } else
- result = PTR_ERR(subpage);
+
+ offset = cl_offset(obj, page->cp_index);
+ stripe = lov_stripe_number(r0->lo_lsm, offset);
+ LASSERT(stripe < r0->lo_nr);
+ result = lov_stripe_offset(r0->lo_lsm, offset, stripe,
+ &suboff);
+ LASSERT(result == 0);
+
+ subobj = lovsub2cl(r0->lo_sub[stripe]);
+ sub = lov_sub_get(env, lio, stripe);
+ if (IS_ERR(sub))
+ GOTO(out, result = PTR_ERR(sub));
+
+ subpage = cl_page_find(sub->sub_env, subobj,
+ cl_index(subobj, suboff), vmpage,
+ page->cp_type);
+ lov_sub_put(sub);
+ if (!IS_ERR(subpage)) {
+ struct lov_page *lpg;
+
+ OBD_SLAB_ALLOC_PTR_GFP(lpg, lov_page_kmem, CFS_ALLOC_IO);
+ if (lpg == NULL) {
+ cl_page_put(env, subpage);
+ GOTO(out, result = -ENOMEM);
+ }
+
+ if (subpage->cp_parent != NULL) {
+ /*
+ * This is only possible when TRANSIENT page
+ * is being created, and CACHEABLE sub-page
+ * (attached to already existing top-page) has
+ * been found. Tell cl_page_find() to use
+ * existing page.
+ */
+ LASSERT(subpage->cp_type == CPT_CACHEABLE);
+ LASSERT(page->cp_type == CPT_TRANSIENT);
+ lpg->lps_invalid = 1;
+ cl_page_put(env, subpage);
+ /*
+ * XXX This assumes that lov is in the topmost
+ * cl_page.
+ */
+ result = PTR_ERR(cl_page_top(subpage));
+ } else {
+ lu_ref_add(&subpage->cp_reference, "lov", page);
+ subpage->cp_parent = page;
+ page->cp_child = subpage;
+ }
+ cl_page_slice_add(page, &lpg->lps_cl,
+ obj, &lov_page_ops);