From: Christian Brauner Date: Wed, 29 Oct 2025 12:20:22 +0000 (+0100) Subject: ns: add __ns_ref_read() X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=6b053576edb12c7739ea9c7c9900031361922631;p=thirdparty%2Flinux.git ns: add __ns_ref_read() Implement ns_ref_read() the same way as ns_ref_{get,put}(). No point in making that any more special or different from the other helpers. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-9-2e6f823ebdc0@kernel.org Tested-by: syzbot@syzkaller.appspotmail.com Reviewed-by: Jeff Layton Signed-off-by: Christian Brauner --- diff --git a/include/linux/ns_common.h b/include/linux/ns_common.h index 71a5e28344d11..5e09facafd932 100644 --- a/include/linux/ns_common.h +++ b/include/linux/ns_common.h @@ -154,7 +154,12 @@ static __always_inline __must_check bool __ns_ref_get(struct ns_common *ns) return refcount_inc_not_zero(&ns->__ns_ref); } -#define ns_ref_read(__ns) refcount_read(&to_ns_common((__ns))->__ns_ref) +static __always_inline __must_check int __ns_ref_read(const struct ns_common *ns) +{ + return refcount_read(&ns->__ns_ref); +} + +#define ns_ref_read(__ns) __ns_ref_read(to_ns_common((__ns))) #define ns_ref_inc(__ns) refcount_inc(&to_ns_common((__ns))->__ns_ref) #define ns_ref_get(__ns) __ns_ref_get(to_ns_common((__ns))) #define ns_ref_put(__ns) __ns_ref_put(to_ns_common((__ns)))