return NULL;
lock_acquire (&pool->lock);
-
page_idx = bitmap_scan_and_flip (pool->used_map, 0, page_cnt, false);
+ lock_release (&pool->lock);
+
if (page_idx != BITMAP_ERROR)
pages = pool->base + PGSIZE * page_idx;
else
PANIC ("palloc_get: out of pages");
}
- lock_release (&pool->lock);
-
return pages;
}
memset (pages, 0xcc, PGSIZE * page_cnt);
#endif
- lock_acquire (&pool->lock);
- ASSERT (bitmap_all (pool->used_map, page_idx, page_idx + page_cnt));
- bitmap_set_multiple (pool->used_map, page_idx, page_idx + page_cnt, false);
- lock_release (&pool->lock);
+ ASSERT (bitmap_all (pool->used_map, page_idx, page_cnt));
+ bitmap_set_multiple (pool->used_map, page_idx, page_cnt, false);
}
/* Frees the page at PAGE. */