Re: [PATCH 18/26] ovl: avoid pointless cred reference count bump

From: Christian Brauner
Date: Mon Nov 25 2024 - 06:30:57 EST


On Sun, Nov 24, 2024 at 03:59:40PM +0100, Amir Goldstein wrote:
> On Sun, Nov 24, 2024 at 2:44 PM Christian Brauner <brauner@xxxxxxxxxx> wrote:
> >
> > No need for the extra reference count bump.
> >
> > Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
> > ---
> > fs/overlayfs/copy_up.c | 6 ++----
> > 1 file changed, 2 insertions(+), 4 deletions(-)
> >
> > diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
> > index 439bd9a5ceecc4d2f4dc5dfda7cea14c3d9411ba..39f08531abc7e99c32e709a46988939f072a9abe 100644
> > --- a/fs/overlayfs/copy_up.c
> > +++ b/fs/overlayfs/copy_up.c
> > @@ -741,17 +741,15 @@ static int ovl_prep_cu_creds(struct dentry *dentry, struct ovl_cu_creds *cc)
> > return err;
> >
> > if (cc->new)
> > - cc->old = override_creds(get_new_cred(cc->new));
> > + cc->old = override_creds(cc->new);
> >
> > return 0;
> > }
> >
> > static void ovl_revert_cu_creds(struct ovl_cu_creds *cc)
> > {
> > - if (cc->new) {
> > + if (cc->new)
> > put_cred(revert_creds(cc->old));
> > - put_cred(cc->new);
> > - }
>
> Same comment here, I think this will read more clearly as
> revert_creds(cc->old));
> put_cred(cc->new);
>
> and better reflects the counterpart of ovl_prep_cu_creds().

Ok, done.