On Mon, Apr 01, 2013 at 02:00:29PM -0700, Greg Kroah-Hartman wrote: > > IOW, how do we deal with a race between attempt to open a debugfs file and > > its removal on driver unload? Greg? > > Hm, I thought the i_fop->owner thing would be the needed protection, but
It will be, if you manage to fetch it... > I guess you are right, it will not. I guess we need to do what > character devices do and have an "intermediate" fops in order to protect > this. Would that work? You mean, with reassigning ->f_op in ->open()? That'll work, as long as we have exclusion between removal and fetching the sucker in primary ->open()... Where would you prefer to stash fops? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
