在 2023/10/9 17:03, Peng Zhang 写道:
When destroying maple tree, preserve its attributes and then turn it
into an empty tree. This allows it to be reused without needing to be
reinitialized.
Signed-off-by: Peng Zhang <zhangpeng.00@xxxxxxxxxxxxx>
---
lib/maple_tree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index d5544382ff15..1745242092fb 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -6775,7 +6775,7 @@ void __mt_destroy(struct maple_tree *mt)
if (xa_is_node(root))
mte_destroy_walk(root, mt);
- mt->ma_flags = 0;
+ mt->ma_flags = mt_attr(mt)If I put everything into exit_mmap() for handling, this patch would
not be necessary. But I think this patch is reasonable as it simply
deletes all elements without requiring us to reinitialize the tree.
What do you think?
}
EXPORT_SYMBOL_GPL(__mt_destroy);
