On Tue, Nov 22, 2022 at 6:18 AM Andrew Davis [off-list ref] wrote:

On 11/19/22 5:04 PM, Alexander Lobakin wrote:

quoted

From: Masahiro Yamada <masahiroy@kernel.org>

With CONFIG_BLK_DEV_RNBD_CLIENT=m and CONFIG_BLK_DEV_RNBD_SERVER=y
(or vice versa), rnbd-common.o is linked to a module and also to
vmlinux even though CFLAGS are different between builtins and modules.

This is the same situation as fixed by commit 637a642f5ca5 ("zstd:
Fixing mixed module-builtin objects").

Turn rnbd_access_mode_str() into an inline function.

Why inline? All you should need is "static" to keep these internal to
each compilation unit. Inline also bloats the object files when the
function is called from multiple places. Let the compiler decide when
to inline.

Andrew

Since it is a header file.


In header files, "static inline" should be always used.
Never "static".


If a header is included from a C file and there is a function
that is not used from that C file,
"static" would emit -Wunused-function warning
(-Wunused-function is enabled by -Wall, which is the case
for the kernel build).





-- 
Best Regards
Masahiro Yamada