From 4bc1a9222a64442bb2bcbdabca2c3c0eb4f9dad6 Mon Sep 17 00:00:00 2001
From: swj <1186093704@qq.com>
Date: Wed, 23 Apr 2025 22:39:28 +0800
Subject: example: fix memfs_rename deadlock error

Signed-off-by: swj <1186093704@qq.com>
---
 example/memfs_ll.cc | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/example/memfs_ll.cc b/example/memfs_ll.cc
index 9898f25..6038850 100644
--- a/example/memfs_ll.cc
+++ b/example/memfs_ll.cc
@@ -900,6 +900,7 @@ static void memfs_rename(fuse_req_t req, fuse_ino_t parent, const char *name,
 	Inode *parentInode = nullptr;
 	Inode *newparentInode = nullptr;
 	Dentry *child_dentry = nullptr;
+	Dentry *child_dentry_copy = nullptr;
 	Dentry *existing_dentry = nullptr;
 
 	if (flags & (RENAME_EXCHANGE | RENAME_NOREPLACE)) {
@@ -909,8 +910,8 @@ static void memfs_rename(fuse_req_t req, fuse_ino_t parent, const char *name,
 
 	Inodes.lock();
 
-	parentInode = Inodes.find(parent);
-	newparentInode = Inodes.find(newparent);
+	parentInode = Inodes.find_locked(parent);
+	newparentInode = Inodes.find_locked(newparent);
 	if (!parentInode || !parentInode->is_dir() || !newparentInode ||
 	    !newparentInode->is_dir()) {
 		error = ENOENT;
@@ -941,9 +942,9 @@ static void memfs_rename(fuse_req_t req, fuse_ino_t parent, const char *name,
 		existing_dentry->get_inode()->dec_nlink();
 	}
 
+	child_dentry_copy = new Dentry(newname, child_dentry->get_inode());
 	parentInode->remove_child(name);
-	child_dentry->name = newname;
-	newparentInode->add_child(newname, child_dentry);
+	newparentInode->add_child_locked(newname, child_dentry_copy);
 
 out_unlock:
 	parentInode->unlock();
-- 
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