On Thu, Feb 02, 2017 at 08:17:31AM -0700, Jens Axboe wrote: > On 02/02/2017 03:58 AM, Greg Kroah-Hartman wrote: > > On Wed, Feb 01, 2017 at 12:31:15AM -0800, Omar Sandoval wrote: > >> On Wed, Feb 01, 2017 at 09:16:08AM +0100, Greg Kroah-Hartman wrote: > >>> On Tue, Jan 31, 2017 at 02:53:16PM -0800, Omar Sandoval wrote: > >>>> From: Omar Sandoval <osandov@xxxxxx> > >>>> > >>>> When I moved the blk-mq debugging information to debugfs, I didn't > >>>> realize that blktrace also created directories in debugfs that > >>>> conflicted with the blk-mq directories. This series fixes that. > >>>> > >>>> Patch 1 adds a new debugfs helper needed for patch 6. Greg, could I get > >>>> an ack on that if it makes sense? Jens and I went back and forth on this > >>>> for a little while, but patch 6 has more of the rationale on why we > >>>> decided that this approach was the cleanest. > >>> > >>> I can't find patch 6, you only cc:ed me on the first patch :( > >>> > >>> Care to bounce them all to me? > >>> > >>> thanks, > >>> > >>> greg k-h > >> > >> Gah, I forgot --cc-cover to git-send-email. The series is all here: > >> http://marc.info/?l=linux-block&r=1&b=201701&w=2. I can also send the > >> patches directly to you if you prefer that. > > > > I don't understand the problem here. How do you not know if you have > > created the debugfs file or not? You have the structure, with the > > correct name, how could it have been created? Can't you save the dentry > > to the debugfs file in the structure that has the name? > > The problem is that blktrace registers a trace name directory, which > can be either whole device or partition, depending on what you trace. > For the blk-mq debug parts, we always just register the whole device > name. There's no way to save the partition dentry, and imho, why even > would you when you can just look it up. It's a file system... I agree, it is a file system, but usually that debugfs file is associated with some sort of data you want to keep track of outside of a filesystem :) Anyway, if it's such a big pain, then it's fine, add the function, no objection from me anymore. Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
