Hi Greg! 2018-05-20 11:04 GMT+02:00 Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>: > On Sun, May 20, 2018 at 10:59:32AM +0200, Kai Krakow wrote: >> Hey Greg! >> >> The v1 version applied for me but it shows a compiler warning. I didn't try >> the newer version yet. >> >> I could prepare a back-ported version. > > Backported would be good. Currently on the way. I'm not much into kernel development so I can only apply on 4.16.9, reboot, and check if it works. Hope that's okay. How should it be tagged then? Should I add my "Signed-off-by" or another line? Should it be sent as a v5 version of the patch? > Also, the code really is wrong even with this change. No code path > should ever do anything different if debugfs is enabled or not, or based > on the return value of a debugfs call. No need to check anything here > at all, the function should be: > > void __init bch_debug_init(void) > { > bcache_debug = debugfs_create_dir("bcache", NULL); > } > > That's it, no checking, and all is fine and good. Any result of a > debugfs call can always be fed back into another debugfs call with no > harm or errors happening. I'll try to figure out if this works, and only then send the patch. Regards, Kai