From: Alan Stern <stern@rowland.harvard.edu>
To: Hugh Dickins <hugh@veritas.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Oliver Neukum <oneukum@suse.de>,
Maneesh Soni <maneesh@in.ibm.com>, <gregkh@suse.de>,
Richard Purdie <rpurdie@rpsys.net>,
James Bottomley <James.Bottomley@SteelEye.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Kernel development list <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.21-rc suspend regression: sysfs deadlock
Date: Tue, 13 Mar 2007 17:20:43 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.4.44L0.0703131708090.2509-100000@iolanthe.rowland.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0703132052560.24739@blonde.wat.veritas.com>
On Tue, 13 Mar 2007, Hugh Dickins wrote:
> On Tue, 13 Mar 2007, Alan Stern wrote:
> >
> > On the other hand, a quick survey of the kernel source shows that
> > DEVICE_ATTR is used over 1500 times. Auditing all of them is not a job
> > for the faint-of-heart!
>
> Indeed, and faint-hearted Hugh wasn't intending to do so: but
> stout-hearted Alan will need to, won't he, before his patch can go in?
Allow me to point out that the original patch is Oliver's (although I
helped), and it doesn't need to go in -- it needs not to be removed.
Furthermore, I have better things to do with the next month of my time
than auditing hundreds of routines I don't understand for behavior I
probably won't be able to recognize. (Although at 50 a day... hmmm,
maybe.)
This sounds more like a job for kernel-janitors!
On Tue, 13 Mar 2007, Dmitry Torokhov wrote:
> I think we could rely on subsystems maintainers to let us know if
> there are potential problems. For example I can tell that neither
> input, serio nor gameport subsystems use sysfs to destroy their
> devices (action on sysfs may cause some other device to be destroyed
> but that should be ok, only self-destruction is not allowed, right?)
Very good points. USB doesn't do anything like that either. And right,
it's okay for a method to destroy other devices; it just can't do anything
that would lead to its own unregistration.
Alan Stern
next prev parent reply other threads:[~2007-03-13 21:20 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-08 13:05 refcounting drivers' data structures used in sysfs buffers Oliver Neukum
2007-03-08 16:02 ` Alan Stern
2007-03-09 0:45 ` Oliver Neukum
2007-03-09 16:32 ` Alan Stern
2007-03-09 16:44 ` Oliver Neukum
2007-03-09 17:02 ` Dmitry Torokhov
2007-03-09 17:18 ` Oliver Neukum
2007-03-09 17:34 ` Dmitry Torokhov
2007-03-09 19:32 ` Alan Stern
2007-03-09 20:05 ` Oliver Neukum
2007-03-09 20:27 ` Alan Stern
2007-03-09 20:39 ` Oliver Neukum
2007-03-09 20:08 ` Alan Stern
2007-03-09 20:48 ` Oliver Neukum
2007-03-10 19:19 ` Alan Stern
2007-03-12 8:54 ` Oliver Neukum
2007-03-12 14:57 ` Alan Stern
2007-03-12 15:23 ` Oliver Neukum
2007-03-12 15:42 ` Dmitry Torokhov
2007-03-12 15:59 ` Oliver Neukum
2007-03-12 16:21 ` Alan Stern
2007-03-12 18:25 ` Oliver Neukum
2007-03-12 19:31 ` Alan Stern
2007-03-12 19:49 ` Oliver Neukum
2007-03-12 20:03 ` Alan Stern
2007-03-12 20:15 ` Oliver Neukum
2007-03-12 20:31 ` Dmitry Torokhov
2007-03-12 20:45 ` Alan Stern
2007-03-12 21:31 ` Richard Purdie
2007-03-13 15:00 ` 2.6.21-rc suspend regression: sysfs deadlock Alan Stern
2007-03-13 18:42 ` Cornelia Huck
2007-03-13 21:20 ` Linus Torvalds
2007-03-14 16:12 ` Alan Stern
2007-03-14 18:43 ` Cornelia Huck
2007-03-14 19:23 ` Alan Stern
2007-03-15 10:27 ` Cornelia Huck
2007-03-15 12:31 ` Hugh Dickins
2007-03-15 13:02 ` Oliver Neukum
2007-03-15 13:22 ` Dmitry Torokhov
2007-03-15 13:59 ` Hugh Dickins
2007-03-15 14:27 ` Alan Stern
2007-03-15 15:32 ` Cornelia Huck
2007-03-15 16:29 ` Hugh Dickins
2007-03-15 16:51 ` Linus Torvalds
2007-03-15 19:50 ` [PATCH] sysfs and driver core: add callback helper, used by SCSI and S390 Alan Stern
2007-03-15 19:51 ` [PATCH] sysfs: reinstate exclusion between method calls and attribute unregistration Alan Stern
2007-03-13 19:00 ` 2.6.21-rc suspend regression: sysfs deadlock Hugh Dickins
2007-03-13 20:09 ` Alan Stern
2007-03-13 20:55 ` Hugh Dickins
2007-03-13 21:08 ` Dmitry Torokhov
2007-03-13 21:20 ` Alan Stern [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-03-10 20:44 Alan Stern
2007-03-06 19:20 Hugh Dickins
2007-03-06 20:16 ` Oliver Neukum
2007-03-07 1:56 ` Linus Torvalds
2007-03-07 14:38 ` Oliver Neukum
2007-03-07 15:56 ` Dmitry Torokhov
2007-03-07 16:52 ` Linus Torvalds
2007-03-07 16:59 ` Oliver Neukum
2007-03-07 18:02 ` Linus Torvalds
2007-03-07 18:16 ` Oliver Neukum
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