On Tue, Apr 29, 2014 at 10:52:04AM +1000, Dave Chinner wrote:
> >  #ifdef CONFIG_FSNOTIFY
> > @@ -240,10 +246,19 @@ void __destroy_inode(struct inode *inode)
> >     }
> >  
> >  #ifdef CONFIG_FS_POSIX_ACL
> > -   if (inode->i_acl && inode->i_acl != ACL_NOT_CACHED)
> > -           posix_acl_release(inode->i_acl);
> > -   if (inode->i_default_acl && inode->i_default_acl != ACL_NOT_CACHED)
> > -           posix_acl_release(inode->i_default_acl);
> > +   if (IS_POSIXACL(inode)) {
> > +           if (inode->i_acl && inode->i_acl != ACL_NOT_CACHED)
> > +                   posix_acl_release(inode->i_acl);
> > +           if (inode->i_default_acl &&
> > +               inode->i_default_acl != ACL_NOT_CACHED)
> > +                   posix_acl_release(inode->i_default_acl);
> > +   }
> > +#endif
> > +#ifdef CONFIG_FS_RICHACL
> > +   if (IS_RICHACL(inode)) {
> > +           if (inode->i_richacl && inode->i_richacl != ACL_NOT_CACHED)
> > +                   richacl_put(inode->i_richacl);
> > +   }
> >  #endif
> 
>       if (inode->i_acl && inode->i_acl != ACL_NOT_CACHED)
>               acl_release(inode->i_acl);
> 
> And all the mess of working out what acl needs releasing get taken
> out of of this code.

Let's go further and have the API simply:

        inode_acl_release(inode);

with inode_acl_release looking something like:

        if (inode->i_acl && inode->i_acl != ACL_NOT_CACHED)
                acl_release(inode->i_acl);
        if (inode->i_default_acl && inode->i_default_acl != ACL_NOT_CACHED)
                acl_release(inode->i_default_acl);
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