Changes in kernel/generic/src/mm/backend_elf.c [83b6ba9f:5df1963] in mainline

File:

• kernel/generic/src/mm/backend_elf.c (modified) (5 diffs)

kernel/generic/src/mm/backend_elf.c

@@ -75 +75 @@
         .page_fault = elf_page_fault,
         .frame_free = elf_frame_free,
-
-        .create_shared_data = NULL,
-        .destroy_shared_data = NULL
 };
 
@@ -277 +274 @@
         start_anon = entry->p_vaddr + entry->p_filesz;
 
-        mutex_lock(&area->sh_info->lock);
-        if (area->sh_info->shared) {
+        if (area->sh_info) {
                 bool found = false;
 
@@ -285 +281 @@
                  */
                 
+                mutex_lock(&area->sh_info->lock);
                 frame = (uintptr_t) btree_search(&area->sh_info->pagemap,
                     upage - area->base, &leaf);
@@ -387 +384 @@
         }
 
-        if (dirty && area->sh_info->shared) {
+        if (dirty && area->sh_info) {
                 frame_reference_add(ADDR2PFN(frame));
                 btree_insert(&area->sh_info->pagemap, upage - area->base,
@@ -393 +390 @@
         }
 
-        mutex_unlock(&area->sh_info->lock);
+        if (area->sh_info)
+                mutex_unlock(&area->sh_info->lock);
 
         page_mapping_insert(AS, upage, frame, as_area_get_flags(area));