From: Helge Hafting <helgehaf@aitel.hist.no> To: Greg KH <greg@kroah.com> Cc: linux-hotplug-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: udev and devfs - The final word Date: Sat, 3 Jan 2004 16:22:41 +0100 [thread overview] Message-ID: <20040103152241.GA5531@hh.idb.hist.no> (raw) In-Reply-To: <20040103055938.GD5306@kroah.com> On Fri, Jan 02, 2004 at 09:59:38PM -0800, Greg KH wrote: > On Thu, Jan 01, 2004 at 02:18:55AM +0100, Helge Hafting wrote: > > On Tue, Dec 30, 2003 at 04:29:42PM -0800, Greg KH wrote: > > > > > > 2) We are (well, were) running out of major and minor numbers for > > > devices. > > > > devfs tried to fix this one by _getting rid_ of those numbers. > > Seriously - what are they needed for? > > But devfs failed in this. The devfs kernel interface still requires a > major/minor number to create device nodes. > Yes. The numbers went unused in the common case of opening a device by name though. > Hopefully I can work on fixing this up in 2.7. Interesting - how do you plan to do this? There must be some connection from device node to driver. Devfs had a pointer in the inode. The old way has numbers, and spend time on a search. Are you considering a sort of "minimal devfs" managed by udev? Helge Hafting
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From: Helge Hafting <helgehaf@aitel.hist.no> To: Greg KH <greg@kroah.com> Cc: linux-hotplug-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: udev and devfs - The final word Date: Sat, 03 Jan 2004 15:22:41 +0000 [thread overview] Message-ID: <20040103152241.GA5531@hh.idb.hist.no> (raw) In-Reply-To: <20040103055938.GD5306@kroah.com> On Fri, Jan 02, 2004 at 09:59:38PM -0800, Greg KH wrote: > On Thu, Jan 01, 2004 at 02:18:55AM +0100, Helge Hafting wrote: > > On Tue, Dec 30, 2003 at 04:29:42PM -0800, Greg KH wrote: > > > > > > 2) We are (well, were) running out of major and minor numbers for > > > devices. > > > > devfs tried to fix this one by _getting rid_ of those numbers. > > Seriously - what are they needed for? > > But devfs failed in this. The devfs kernel interface still requires a > major/minor number to create device nodes. > Yes. The numbers went unused in the common case of opening a device by name though. > Hopefully I can work on fixing this up in 2.7. Interesting - how do you plan to do this? There must be some connection from device node to driver. Devfs had a pointer in the inode. The old way has numbers, and spend time on a search. Are you considering a sort of "minimal devfs" managed by udev? Helge Hafting ------------------------------------------------------- This SF.net email is sponsored by: IBM Linux Tutorials. Become an expert in LINUX or just sharpen your skills. Sign up for IBM's Free Linux Tutorials. Learn everything from the bash shell to sys admin. Click now! http://ads.osdn.com/?ad_id\x1278&alloc_id371&op=click _______________________________________________ Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net Linux-hotplug-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel
next prev parent reply other threads:[~2004-01-03 15:11 UTC|newest] Thread overview: 177+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-12-31 0:29 udev and devfs - The final word Greg KH 2003-12-31 0:29 ` Greg KH 2003-12-31 0:46 ` Johannes Erdfelt 2003-12-31 0:53 ` Prakash K. Cheemplavam 2003-12-31 0:53 ` Prakash K. Cheemplavam 2003-12-31 19:17 ` Greg KH 2003-12-31 19:17 ` Greg KH 2004-01-02 16:45 ` Shawn 2004-01-02 16:45 ` Shawn 2003-12-31 12:43 ` Paulo Marques 2004-01-01 1:18 ` Helge Hafting 2004-01-01 1:18 ` Helge Hafting 2004-01-03 5:59 ` Greg KH 2004-01-03 5:59 ` Greg KH 2004-01-03 15:22 ` Helge Hafting [this message] 2004-01-03 15:22 ` Helge Hafting 2004-01-03 21:18 ` viro 2004-01-03 21:18 ` viro 2004-01-03 22:11 ` Greg KH 2004-01-03 22:11 ` Greg KH [not found] ` <20040103140140.3b848e9f.witukind@nsbm.kicks-ass.org> 2004-01-03 22:16 ` Greg KH 2004-01-03 22:16 ` Greg KH 2004-01-03 22:33 ` Christoph Hellwig 2004-01-03 22:33 ` Christoph Hellwig 2004-01-02 17:54 ` Andreas Jellinghaus 2004-01-02 18:19 ` Shawn 2004-03-29 15:38 ` Shawn 2004-03-29 15:39 ` Greg KH 2004-03-29 15:40 ` Helge Hafting 2004-03-29 15:40 ` Greg KH 2004-03-29 15:40 ` Greg KH 2004-03-29 15:40 ` viro 2004-03-29 15:40 ` Christoph Hellwig [not found] <18Cz7-7Ep-7@gated-at.bofh.it> 2003-12-31 3:05 ` Pascal Schmidt 2003-12-31 19:23 ` Greg KH 2003-12-31 20:19 ` Rob Love 2003-12-31 22:01 ` Nathan Conrad 2003-12-31 22:20 ` Rob Love 2003-12-31 21:45 ` Tommi Virtanen 2003-12-31 23:10 ` Rob Love 2003-12-31 21:52 ` Tommi Virtanen 2004-01-02 0:17 ` Hollis Blanchard 2004-01-02 0:36 ` viro 2004-01-03 6:04 ` Greg KH 2003-12-31 22:55 ` viro 2003-12-31 23:05 ` Rob Love 2003-12-31 23:48 ` Andreas Dilger 2004-01-07 10:15 ` Olaf Hering 2004-01-07 11:18 ` viro 2004-01-07 13:00 ` Olaf Hering 2004-01-07 13:26 ` viro 2004-01-07 13:27 ` Olaf Hering 2004-01-01 0:15 ` Andries Brouwer 2004-01-01 0:31 ` Rob Love 2004-01-01 12:34 ` Rob Landley 2004-01-01 15:22 ` Rob Love 2004-01-01 15:48 ` Andries Brouwer 2004-01-01 15:54 ` Rob Love 2004-01-02 20:42 ` Linus Torvalds 2004-01-03 3:00 ` Andries Brouwer 2004-01-03 4:46 ` Linus Torvalds 2004-01-03 13:10 ` Andries Brouwer 2004-01-03 22:27 ` Linus Torvalds 2004-01-03 23:08 ` Andries Brouwer 2004-01-04 1:16 ` Mark Mielke 2004-01-04 1:54 ` Valdis.Kletnieks 2004-01-04 18:44 ` Mark Mielke 2004-01-04 2:09 ` Linus Torvalds 2004-01-04 2:49 ` Andries Brouwer 2004-01-04 3:04 ` Linus Torvalds 2004-01-04 13:21 ` Andries Brouwer 2004-01-04 21:05 ` Linus Torvalds 2004-01-04 22:01 ` Andries Brouwer 2004-01-04 22:37 ` viro 2004-01-05 1:02 ` Mark Mielke 2004-01-05 2:24 ` Valdis.Kletnieks 2004-01-05 2:29 ` Andries Brouwer 2004-01-05 3:42 ` viro 2004-01-04 22:37 ` Helge Hafting 2004-01-04 23:35 ` Valdis.Kletnieks 2004-01-05 1:43 ` Jeremy Maitin-Shepard 2004-01-05 1:58 ` viro 2004-01-05 2:12 ` Jeremy Maitin-Shepard 2004-01-05 2:52 ` Linus Torvalds 2004-01-05 3:06 ` David Lang 2004-01-05 3:48 ` Rob Landley 2004-01-05 4:52 ` Trond Myklebust 2004-01-05 15:13 ` Mark Mielke 2004-01-05 16:36 ` Andreas Schwab 2004-01-05 22:18 ` Mark Mielke 2004-01-05 3:07 ` Daniel Jacobowitz 2004-01-05 3:33 ` Linus Torvalds 2004-01-05 3:50 ` viro 2004-01-05 4:02 ` Linus Torvalds 2004-01-05 4:38 ` viro 2004-01-05 4:52 ` Linus Torvalds 2004-01-05 6:11 ` viro 2004-01-05 7:47 ` Greg KH 2004-01-05 11:15 ` Vojtech Pavlik 2004-01-05 20:11 ` Theodore Ts'o 2004-01-05 21:06 ` Vojtech Pavlik 2004-01-05 22:22 ` Theodore Ts'o 2004-01-06 0:14 ` Rob Landley 2004-01-11 22:12 ` Ed L Cashin 2004-01-05 5:26 ` Eric W. Biederman 2004-01-05 7:39 ` Greg KH 2004-01-07 9:57 ` Pavel Machek 2004-01-05 12:27 ` Andries Brouwer 2004-01-05 16:13 ` Linus Torvalds 2004-01-05 17:29 ` Vojtech Pavlik 2004-01-05 17:33 ` Linus Torvalds 2004-01-05 17:52 ` Davide Libenzi 2004-01-05 18:03 ` Linus Torvalds 2004-01-05 18:09 ` Hugo Mills 2004-01-05 19:10 ` Paul Rolland 2004-01-05 19:52 ` Andries Brouwer 2004-01-05 20:38 ` Linus Torvalds 2004-01-05 22:17 ` Shawn 2004-01-05 22:25 ` Mark Mielke 2004-01-05 23:05 ` Shawn 2004-01-05 23:23 ` Shawn 2004-01-06 0:43 ` Greg KH 2004-01-06 0:53 ` Shawn 2004-01-05 23:13 ` Andries Brouwer 2004-01-05 23:32 ` Linus Torvalds 2004-01-06 0:59 ` viro 2004-01-06 1:17 ` Linus Torvalds 2004-01-06 4:28 ` viro 2004-01-06 5:07 ` Linus Torvalds 2004-01-06 1:06 ` Andries Brouwer 2004-01-06 15:00 ` Mark Mielke 2004-01-06 0:00 ` Greg KH 2004-01-06 1:41 ` Andries Brouwer 2004-01-07 17:14 ` Greg KH 2004-01-06 0:31 ` Rob Landley 2004-01-06 7:14 ` Vojtech Pavlik 2004-01-05 7:44 ` James H. Cloos Jr. 2004-01-05 7:45 ` Nigel Cunningham 2004-01-05 11:01 ` Robin Rosenberg 2004-01-05 12:39 ` Nigel Cunningham 2004-01-07 13:39 ` Robin Rosenberg 2004-01-07 17:16 ` Nigel Cunningham 2004-01-05 9:06 ` Valdis.Kletnieks 2004-01-05 4:15 ` Peter Chubb 2004-01-05 4:42 ` Linus Torvalds 2004-01-01 19:43 ` Kai Henningsen 2004-01-02 7:26 ` Rob Landley 2004-01-04 8:57 ` Greg KH 2004-01-04 9:43 ` Rob Landley 2004-01-02 0:17 ` Maciej Zenczykowski [not found] ` <20040102103104.GA28168@mark.mielke.cc> 2004-01-03 6:07 ` Greg KH 2004-01-03 6:51 ` Valdis.Kletnieks 2004-01-03 11:57 ` Ian Kent 2004-01-03 22:08 ` Greg KH 2004-01-07 10:23 ` Olaf Hering 2004-01-01 23:14 ` Rob 2004-01-02 3:53 ` Tyler Hall 2004-01-01 16:17 ` Pascal Schmidt 2004-01-01 20:03 ` Greg KH [not found] <fa.af64864.ugabhg@ifi.uio.no> [not found] ` <fa.de7jae9.1jk0pjt@ifi.uio.no> 2003-12-31 22:17 ` walt 2004-01-01 2:03 ` Martin Schlemmer 2004-01-01 2:05 ` Martin Schlemmer 2004-01-01 16:59 Shaheed [not found] <fa.flhsork.uka2hg@ifi.uio.no> [not found] ` <fa.hv9hpq7.1l1q9p3@ifi.uio.no> 2004-01-01 19:53 ` walt 2004-01-01 21:53 ` Martin Schlemmer 2004-01-06 1:20 Paul Zimmerman 2004-01-08 13:05 "Andrey Borzenkov" 2004-01-08 13:53 "Andrey Borzenkov" 2004-01-08 15:40 ` Ian Kent 2004-01-08 17:26 ` Diego Calleja 2004-01-08 19:25 ` Andrey Borzenkov 2004-01-08 22:40 ` Alex Goddard 2004-01-09 7:03 ` "Andrey Borzenkov" 2004-01-08 18:14 ` Alex Goddard 2004-01-08 18:35 ` Alex Goddard 2004-01-08 19:22 ` Andrey Borzenkov 2004-01-09 8:51 ` Helge Hafting
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