Messages in this thread | | | Subject | Re: [PATCH 6/9] nfsd: fix empty-body warning in nfs4state.c | From | Joe Perches <> | Date | Sat, 18 Apr 2020 11:53:44 -0700 |
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On Sat, 2020-04-18 at 14:45 -0400, Chuck Lever wrote: > > On Apr 18, 2020, at 2:41 PM, Randy Dunlap <rdunlap@infradead.org> wrote: > > > > Fix gcc empty-body warning when -Wextra is used: > > > > ../fs/nfsd/nfs4state.c:3898:3: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body] > > > > Signed-off-by: Randy Dunlap <rdunlap@infradead.org> > > Cc: Linus Torvalds <torvalds@linux-foundation.org> > > Cc: Andrew Morton <akpm@linux-foundation.org> > > Cc: "J. Bruce Fields" <bfields@fieldses.org> > > Cc: Chuck Lever <chuck.lever@oracle.com> > > Cc: linux-nfs@vger.kernel.org > > I have a patch in my queue that addresses this particular warning, > but your change works for me too. > > Acked-by: Chuck Lever <chuck.lever@oracle.com> > > Unless Bruce objects. > > > > --- > > fs/nfsd/nfs4state.c | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > --- linux-next-20200417.orig/fs/nfsd/nfs4state.c > > +++ linux-next-20200417/fs/nfsd/nfs4state.c > > @@ -34,6 +34,7 @@ > > > > #include <linux/file.h> > > #include <linux/fs.h> > > +#include <linux/kernel.h> > > #include <linux/slab.h> > > #include <linux/namei.h> > > #include <linux/swap.h> > > @@ -3895,7 +3896,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp > > copy_clid(new, conf); > > gen_confirm(new, nn); > > } else /* case 4 (new client) or cases 2, 3 (client reboot): */ > > - ; > > + do_empty(); > > new->cl_minorversion = 0; > > gen_callback(new, setclid, rqstp); > > add_to_unconfirmed(new);
This empty else seems silly and could likely be better handled by a comment above the first if, something like:
/* for now only handle case 1: probable callback update */ if (conf && same_verf(&conf->cl_verifier, &clverifier)) { copy_clid(new, conf); gen_confirm(new, nn); }
with no else use.
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