LU-13134 obdclass: use offset instead of cp_linkage

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

diff --git a/lustre/include/cl_object.h b/lustre/include/cl_object.h
index abd341d..668158b 100644 (file)
--- a/lustre/include/cl_object.h
+++ b/lustre/include/cl_object.h
@@ -737,8 +737,10 @@ struct cl_page {
        struct page             *cp_vmpage;
        /** Linkage of pages within group. Pages must be owned */
        struct list_head         cp_batch;
-       /** List of slices. Immutable after creation. */
-       struct list_head         cp_layers;
+       /** array of slices offset. Immutable after creation. */
+       unsigned char            cp_layer_offset[3];
+       /** current slice index */
+       unsigned char            cp_layer_count:2;
        /**
         * Page state. This field is const to avoid accidental update, it is
         * modified only internally within cl_page.c. Protected by a VM lock.
@@ -781,8 +783,6 @@ struct cl_page_slice {
          */
         struct cl_object                *cpl_obj;
         const struct cl_page_operations *cpl_ops;
-        /** Linkage into cl_page::cp_layers. Immutable after creation. */
-       struct list_head                 cpl_linkage;
 };
 
 /**