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Re: refcounting drivers' data structures used in sysfs buffers

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From: Alan Stern <stern@...>
To: Oliver Neukum <oneukum@...>
Cc: Dmitry Torokhov <dmitry.torokhov@...>, Maneesh Soni <maneesh@...>, <gregkh@...>, <linux-kernel@...>
Subject: Re: refcounting drivers' data structures used in sysfs buffers
Date: Monday, March 12, 2007 - 4:03 pm

On Mon, 12 Mar 2007, Oliver Neukum wrote:


There still would be a synchronization problem.  Refcounts don't solve
races; they only solve lifetime problems.  And you would still have to
change the sysfs API, plus all the other stuff...

Do you think Linus would listen if all three of us (plus maybe Greg) tried 
to convince him?

Alan Stern

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Messages in current thread:
refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Thu Mar 8, 9:05 am)
Re: refcounting drivers' data structures used in sysfs buffers, Alan Stern, (Thu Mar 8, 12:02 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Thu Mar 8, 8:45 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Alan Stern, (Fri Mar 9, 12:32 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Fri Mar 9, 12:44 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Dmitry Torokhov, (Fri Mar 9, 1:02 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Fri Mar 9, 1:18 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Dmitry Torokhov, (Fri Mar 9, 1:34 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Alan Stern, (Fri Mar 9, 4:08 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Fri Mar 9, 4:48 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Alan Stern, (Sat Mar 10, 3:19 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Mon Mar 12, 4:54 am)
Re: refcounting drivers' data structures used in sysfs buffers, Alan Stern, (Mon Mar 12, 10:57 am)
Re: refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Mon Mar 12, 11:23 am)
Re: refcounting drivers' data structures used in sysfs buffers, Dmitry Torokhov, (Mon Mar 12, 11:42 am)
Re: refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Mon Mar 12, 11:59 am)
Re: refcounting drivers' data structures used in sysfs buffers, Alan Stern, (Mon Mar 12, 12:21 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Mon Mar 12, 2:25 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Alan Stern, (Mon Mar 12, 3:31 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Mon Mar 12, 3:49 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Alan Stern, (Mon Mar 12, 4:03 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Dmitry Torokhov, (Mon Mar 12, 4:31 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Richard Purdie, (Mon Mar 12, 5:31 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Alan Stern, (Tue Mar 13, 11:00 am)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Hugh Dickins, (Tue Mar 13, 3:00 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Alan Stern, (Tue Mar 13, 4:09 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Hugh Dickins, (Tue Mar 13, 4:55 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Alan Stern, (Tue Mar 13, 5:20 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Dmitry Torokhov, (Tue Mar 13, 5:08 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Cornelia Huck, (Tue Mar 13, 2:42 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Linus Torvalds, (Tue Mar 13, 5:20 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Alan Stern, (Wed Mar 14, 12:12 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Cornelia Huck, (Wed Mar 14, 2:43 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Alan Stern, (Wed Mar 14, 3:23 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Cornelia Huck, (Thu Mar 15, 6:27 am)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Alan Stern, (Thu Mar 15, 10:27 am)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Hugh Dickins, (Thu Mar 15, 12:29 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Linus Torvalds, (Thu Mar 15, 12:51 pm)
[PATCH] sysfs and driver core: add callback helper, used by ..., Alan Stern, (Thu Mar 15, 3:50 pm)
[PATCH] sysfs: reinstate exclusion between method calls and ..., Alan Stern, (Thu Mar 15, 3:51 pm)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Cornelia Huck, (Thu Mar 15, 11:32 am)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Hugh Dickins, (Thu Mar 15, 8:31 am)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Oliver Neukum, (Thu Mar 15, 9:02 am)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Dmitry Torokhov, (Thu Mar 15, 9:22 am)
Re: 2.6.21-rc suspend regression: sysfs deadlock, Hugh Dickins, (Thu Mar 15, 9:59 am)
Re: refcounting drivers' data structures used in sysfs buffers, Alan Stern, (Mon Mar 12, 4:45 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Mon Mar 12, 4:15 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Alan Stern, (Fri Mar 9, 3:32 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Fri Mar 9, 4:05 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Alan Stern, (Fri Mar 9, 4:27 pm)
Re: refcounting drivers' data structures used in sysfs buffers, Oliver Neukum, (Fri Mar 9, 4:39 pm)