From: Christian Brauner <brauner@kernel.org>
Date: Sun, 23 Nov 2025 16:33:27 +0000 (+0100)
Subject: nsfs: convert open_namespace() to FD_PREPARE()
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=00de6e244807aa8e9c00cb6ad2976c429058d4ac;p=thirdparty%2Fkernel%2Flinux.git

nsfs: convert open_namespace() to FD_PREPARE()

Link: https://patch.msgid.link/20251123-work-fd-prepare-v4-9-b6efa1706cfd@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
---

diff --git a/fs/nsfs.c b/fs/nsfs.c
index 648dc59bef7f2..339497b1c267a 100644
--- a/fs/nsfs.c
+++ b/fs/nsfs.c
@@ -108,7 +108,6 @@ int ns_get_path(struct path *path, struct task_struct *task,
 int open_namespace(struct ns_common *ns)
 {
 	struct path path __free(path_put) = {};
-	struct file *f;
 	int err;
 
 	/* call first to consume reference */
@@ -116,16 +115,7 @@ int open_namespace(struct ns_common *ns)
 	if (err < 0)
 		return err;
 
-	CLASS(get_unused_fd, fd)(O_CLOEXEC);
-	if (fd < 0)
-		return fd;
-
-	f = dentry_open(&path, O_RDONLY, current_cred());
-	if (IS_ERR(f))
-		return PTR_ERR(f);
-
-	fd_install(fd, f);
-	return take_fd(fd);
+	return FD_ADD(O_CLOEXEC, dentry_open(&path, O_RDONLY, current_cred()));
 }
 
 int open_related_ns(struct ns_common *ns,