Return-Path: linux-nfs-owner@vger.kernel.org Received: from cantor2.suse.de ([195.135.220.15]:51799 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752090AbaCJA5H (ORCPT ); Sun, 9 Mar 2014 20:57:07 -0400 Date: Mon, 10 Mar 2014 11:56:59 +1100 From: NeilBrown To: Al Viro Cc: David Heidelberger , linux-nfs@vger.kernel.org Subject: Re: DNOTIFY to INOTIFY migration Message-ID: <20140310115659.098a7c06@notabene.brown> In-Reply-To: <20140310002015.GH18016@ZenIV.linux.org.uk> References: <20140310102102.3c886726@notabene.brown> <20140310002015.GH18016@ZenIV.linux.org.uk> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/6cqoXkD=KijVPRsuvA=4+fL"; protocol="application/pgp-signature" Sender: linux-nfs-owner@vger.kernel.org List-ID: --Sig_/6cqoXkD=KijVPRsuvA=4+fL Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Mon, 10 Mar 2014 00:20:15 +0000 Al Viro wrote: > On Mon, Mar 10, 2014 at 10:21:02AM +1100, NeilBrown wrote: > > On Fri, 07 Mar 2014 21:30:34 +0100 David Heidelberger > > wrote: > >=20 > > > Hello, > > >=20 > > > in linux kernel is DNOTIFY actually marked as deprecated, with superi= or=20 > > > replacement INOTIFY. > >=20 > > Where is it marked as deprecated? I would be very surprised if dnotify > > wasn't supported indefinitely. >=20 > Unfortunately, it will be - once it's in, it's in. >=20 > > (I have no opinion on whether rpc.idmapd should be changed to use inoti= fy, > > except based on the "if it ain't broke, don't fix it" principle). >=20 > I still don't understand WTF does rpc.imapd *want* either of those, TBH. The rpc_pipefs filesysem which is mounted on /var/lib/nfs/rpc_pipefs creates new channels for talking to userspace by making new pipes appear in some directory. Any client needs to arrange some notification for these new pip= es appearing so that it can open them and hold a conversation over them. This calls for dnotify (in gssd and idmapd) or inotify (in blkmapd). NeilBrown >=20 > Said that, the original posting does read a bit like "herpes is so last c= entury, > shouldn't we upgrade to clap by now?"...*0O(and I don't want to think what > that makes fanotify, thank you very much) --Sig_/6cqoXkD=KijVPRsuvA=4+fL Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIVAwUBUx0N2znsnt1WYoG5AQIefA/+IHtPqGPcP3wBX6LSm5TgokbWc1EOWi09 QDaBHVW5JBXvmqmN9HhaOdJsO3+MbXivmEndNUc0EoLjEn8jLFdx1BSl6ZdMdjhU lvclrDIY/XFX+++VfnlLq8m3Xn2BuIF6RFded4ZVxWyIXV1u4pIYZDnGa0FG+n3r J/2dx+/Vfwe6rUplD+Gce2RSTbbANGu6Ykp/LtvDj/bHApxz9kxOx7HSCiVznbUT mSG9uOo+DJ4KRSpn1jbWqNn9GPeEFBCjDwEYyTMv9FG72/85ZYT1er8zCyOfAeTF 88J2lbkkk8Z9oiWg/DI9LtLBRDje6A1WejUJlUVdgdRICLZidLzh2GcurXSi7Dq1 dQwXEftjYPiRFB1guVNinUEP3oJMaz/RevjzhJH8UZvVsjls/VXMWxguWlVFngM/ 8XenPi9pPI6Onjt/5uLoK4RIQIfROgic9GgwZaTaY73FKlJLTn5ZmBq/ifBwT6H8 /q+yscMERIHIWurb9aqSY6gmq/rjgsOo203ndLxWXIIZNf5KDsiXfJkZ3xEckIP9 Y2AYhDGKEgja4cjjNWLgvoMLlfSEKnI7lwSUYCKmEbWAakac5T0KN9tCTnbVrmnf z/X782JFaVL1ZnOo3N8ZAu2qRtMq6GGG68/4yq5eMA8hxf+7DqXJRUwTK4lBlO/L 3x43K0Unrk4= =hwMp -----END PGP SIGNATURE----- --Sig_/6cqoXkD=KijVPRsuvA=4+fL--