From: Eric Biggers <ebiggers@xxxxxxxxxx> Subject: fs/namespace.c: make to_mnt_ns() static Make to_mnt_ns() static to address the following 'sparse' warning: fs/namespace.c:1731:22: warning: symbol 'to_mnt_ns' was not declared. Should it be static? Link: http://lkml.kernel.org/r/20191209234830.156260-1-ebiggers@xxxxxxxxxx Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx> Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/namespace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/namespace.c~fs-namespacec-make-to_mnt_ns-static +++ a/fs/namespace.c @@ -1728,7 +1728,7 @@ static bool is_mnt_ns_file(struct dentry dentry->d_fsdata == &mntns_operations; } -struct mnt_namespace *to_mnt_ns(struct ns_common *ns) +static struct mnt_namespace *to_mnt_ns(struct ns_common *ns) { return container_of(ns, struct mnt_namespace, ns); } _