feat: cake (slab) allocator, for dynamic continuous physical page allocation

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

diff --git a/lunaix-os/kernel/mm/pmm.c b/lunaix-os/kernel/mm/pmm.c
index 9c0d3eb44272bda83e4fbe931408261a6801ba75..450353538d6d17d38ad02ec7a3ee88d2fdec5488 100644 (file)
--- a/lunaix-os/kernel/mm/pmm.c
+++ b/lunaix-os/kernel/mm/pmm.c
@@ -66,10 +66,10 @@ pmm_alloc_cpage(pid_t owner, size_t num_pages, pp_attr_t attr)
     size_t p2 = 0;
 
     while (p2 < max_pg && p2 - p1 < num_pages) {
     size_t p2 = 0;
 
     while (p2 < max_pg && p2 - p1 < num_pages) {

-        (!(&pm_table[p2])->ref_counts) ? (p2++) : (p1 = p2);
+        (!(&pm_table[p2])->ref_counts) ? (p2++) : (p1 = ++p2);

     }
 
     }
 

-    if (p2 < max_pg) {
+    if (p2 == max_pg && p2 - p1 < num_pages) {

         return NULL;
     }
 
         return NULL;
     }