On Tue, Feb 12, 2019 at 02:57:34PM +0000, David Howells wrote: > Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > > - if (!xprt->debugfs) { > > + if (IS_ERR_OR_NULL(xprt->debugfs)) { > > That works, though I don't much like the idea of there being an error there. > > Looking in rpc_xprt_debugfs_register() there are two now-dodgy looking checks > on the result of debugfs calls. now-dodgy checks are fine. Well, they shouldn't matter, I've sent a patch that just gets rid of those checks. Ideally no one should need to check of debugfs is ok or not, the fact that these functions keep getting called is a bit odd, I can look into that some more, it shouldn't be needed... thanks, greg k-h