On 2018/8/14 10:59 PM, cdbdyx@xxxxxxx wrote: > Hi Coly， > The three macros is only locally used in func "__cached_dev"，I think > they should be undefined before leaving the func. > Hi Dongbo, It is worthy to do this if there is a potential conflict. But they are defined in sysfs.c and not exported to anywhere else, I guess there won't be any symbol conflict. Then we don't need to worry about this. Coly Li > ---Original--- > *From:* "Coly Li"<colyli@xxxxxxx> > *Date:* Tue, Aug 14, 2018 20:16 PM > *To:* "Dongbo Cao"<cdbdyx@xxxxxxx>; > *Cc:* > "linux-kernel"<linux-kernel@xxxxxxxxxxxxxxx>;"linux-bcache"<linux-bcache@xxxxxxxxxxxxxxx>;"kent.overstreet"<kent.overstreet@xxxxxxxxx>; > *Subject:* Re: [PATCH 2/2] bcache: add undef for macro in function > > On 2018/8/14 4:16 PM, Dongbo Cao wrote: >> add undef for macro d_strtoul,d_strtoul_nonzero and d_strtoi_h >> >> Signed-off-by: Dongbo Cao >> --- >> drivers/md/bcache/sysfs.c | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c >> index 225b15aa..ed67a290 100644 >> --- a/drivers/md/bcache/sysfs.c >> +++ b/drivers/md/bcache/sysfs.c >> @@ -349,6 +349,9 @@ STORE(__cached_dev) >> if (attr == &sysfs_stop) >> bcache_device_stop(&dc->disk); >> >> +#undef d_strtoul >> +#undef d_strtoul_nonzero >> +#undef d_strtoi_h >> return size; >> } >> >> > > Hi Dongbo, > > Could you please to provide the motivation why you make this change ? > > Thanks. > > Coly Li
