Re: [RFC v3 1/5] cleanup: Fix discarded const warning when defining lock guard

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On Mon, Mar 25, 2024 at 05:50:55PM -0700, Vinicius Costa Gomes wrote:
> Christian Brauner <brauner@xxxxxxxxxx> writes:
> 
> >
> > So something like this? (Amir?)
> >
> >  
> > -DEFINE_LOCK_GUARD_1(cred, const struct cred, _T->lock = override_creds_light(_T->lock),
> > -	     revert_creds_light(_T->lock));
> > +DEFINE_LOCK_GUARD_1(cred, struct cred,
> > +		    _T->lock = (struct cred *)override_creds_light(_T->lock),
> > +		    revert_creds_light(_T->lock));
> > +
> > +#define cred_guard(_cred) guard(cred)(((struct cred *)_cred))
> > +#define cred_scoped_guard(_cred) scoped_guard(cred, ((struct cred *)_cred))
> >  
> >  /**
> >   * get_new_cred_many - Get references on a new set of credentials
> 
> Thinking about proposing a PATCH version (with these suggestions applied), Amir
> has suggested in the past that I should propose two separate series:
>  (1) introducing the guard helpers + backing file changes;
>  (2) overlayfs changes;
> 
> Any new ideas about this? Or should I go with this plan?

I mean make it two separate patches and I can provide Amir with a stable
branch for the cleanup guards. I think that's what he wanted.




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