On Tue, Oct 20, 2020 at 2:51 PM OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx> wrote: > > David Gow <davidgow@xxxxxxxxxx> writes: > > > diff --git a/fs/fat/misc.c b/fs/fat/misc.c > > index f1b2a1fc2a6a..445ad3542e74 100644 > > --- a/fs/fat/misc.c > > +++ b/fs/fat/misc.c > > @@ -229,6 +229,7 @@ void fat_time_fat2unix(struct msdos_sb_info *sbi, struct timespec64 *ts, > > ts->tv_nsec = 0; > > } > > } > > +EXPORT_SYMBOL_GPL(fat_time_fat2unix); > > Hm, can this export only if FAT_KUNIT_TEST is builtin or module (maybe > #if IS_ENABLED(...))? And #if will also be worked as the comment too. > That's possible, but I'd prefer to export it unconditionally for two reasons: 1. It'd make it possible to build the fat_test module without having to rebuild the whole kernel/fat. 2. It'd be consistent with fat_time_unix2fat(), which is exported for use in vfat/msdos anyway. Neither of those are dealbreakers, though, so if you'd still prefer this to be behind an ifdef, I'll change it. -- David