mm/vmalloc: fix comments about vmap_area struct

The vmap_area_root should be in the "busy" tree and the
free_vmap_area_root should be in the "free" tree.

Link: https://lkml.kernel.org/r/20220305011510.33596-1-libang.linuxer@gmail.com
Fixes: 688fcbfc06e4 ("mm/vmalloc: modify struct vmap_area to reduce its size")
Signed-off-by: Bang Li <libang.linuxer@gmail.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Pengfei Li <lpf.vector@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 880227b..0506591 100644 (file)
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -80,8 +80,8 @@ struct vmap_area {
        /*
         * The following two variables can be packed, because
         * a vmap_area object can be either:
-        *    1) in "free" tree (root is vmap_area_root)
-        *    2) or "busy" tree (root is free_vmap_area_root)
+        *    1) in "free" tree (root is free_vmap_area_root)
+        *    2) or "busy" tree (root is vmap_area_root)
         */
        union {
                unsigned long subtree_max_size; /* in "free" tree */