Merge pull request ish-app#611 from saagarjha/lock

Replace read lock with write lock in mm_copy
mehfooz09 · Jan 10, 2020 · e901a34 · e901a34
2 parents 06ecbdc + 955d653
commit e901a34
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/kernel/mmap.c b/kernel/mmap.c
@@ -25,9 +25,9 @@ struct mm *mm_copy(struct mm *mm) {
     new_mm->refcount = 1;
     mem_init(&new_mm->mem);
     fd_retain(new_mm->exefile);
-    read_wrlock(&mm->mem.lock);
+    write_wrlock(&mm->mem.lock);
     pt_copy_on_write(&mm->mem, &new_mm->mem, 0, MEM_PAGES);
-    read_wrunlock(&mm->mem.lock);
+    write_wrunlock(&mm->mem.lock);
     return new_mm;
 }