feat: experimental tty console with scrollback buffer.

[lunaix-os.git] / lunaix-os / kernel / mm / region.c

diff --git a/lunaix-os/kernel/mm/region.c b/lunaix-os/kernel/mm/region.c
index d9fddeb0688da964512df788207637f959e6e0dd..1f706dc362140c5203a36b9371b04571b8f492b1 100644 (file)
--- a/lunaix-os/kernel/mm/region.c
+++ b/lunaix-os/kernel/mm/region.c
@@ -2,7 +2,7 @@
 #include <lunaix/mm/region.h>
 
 void
-region_add(struct mm_region** regions,
+region_add(struct mm_region* regions,
            unsigned long start,
            unsigned long end,
            unsigned int attr)
@@ -11,55 +11,47 @@ region_add(struct mm_region** regions,
 
     *region = (struct mm_region){ .attr = attr, .end = end, .start = start };
 
-    if (!*regions) {
-        llist_init_head(&region->head);
-        *regions = region;
-    } else {
-        llist_append(&(*regions)->head, &region->head);
-    }
+    llist_append(&regions->head, &region->head);
 }
 
 void
-region_release_all(struct mm_region** regions)
+region_release_all(struct mm_region* regions)
 {
     struct mm_region *pos, *n;
 
-    llist_for_each(pos, n, &(*regions)->head, head)
+    llist_for_each(pos, n, &regions->head, head)
     {
         lxfree(pos);
     }
-
-    *regions = NULL;
 }
 
 void
-region_copy(struct mm_region** src, struct mm_region** dest)
+region_copy(struct mm_region* src, struct mm_region* dest)
 {
-    if (!*src) {
+    if (!src) {
         return;
     }
 
     struct mm_region *pos, *n;
 
-    llist_init_head(*dest);
-    llist_for_each(pos, n, &(*src)->head, head)
+    llist_for_each(pos, n, &src->head, head)
     {
         region_add(dest, pos->start, pos->end, pos->attr);
     }
 }
 
 struct mm_region*
-region_get(struct mm_region** regions, unsigned long vaddr)
+region_get(struct mm_region* regions, unsigned long vaddr)
 {
-    if (!*regions) {
+    if (!regions) {
         return NULL;
     }
 
     struct mm_region *pos, *n;
 
-    llist_for_each(pos, n, &(*regions)->head, head)
+    llist_for_each(pos, n, &regions->head, head)
     {
-        if (vaddr >= pos->start && vaddr < pos->end) {
+        if (pos->start <= vaddr && vaddr < pos->end) {
             return pos;
         }
     }