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From: Linus Torvalds <torvalds@linux-foundation.org>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Jiri Slaby <jslaby@suse.cz>, Greg KH <greg@kroah.com>,
	Alan Cox <alan@lxorguk.ukuu.org.uk>,
	LKML <linux-kernel@vger.kernel.org>,
	systemd-devel@lists.freedesktop.org,
	Al Viro <viro@zeniv.linux.org.uk>
Subject: Re: sysfs regression: wrong link counts
Date: Tue, 31 Jan 2012 08:45:58 -0800	[thread overview]
Message-ID: <CA+55aFwZNdoAA9iPMiEp8-+ndgV+CtSZO4neSh_L+gd77k7-vg@mail.gmail.com> (raw)
In-Reply-To: <m14nvc82jo.fsf@fess.ebiederm.org>

On Tue, Jan 31, 2012 at 4:44 AM, Eric W. Biederman
<ebiederm@xmission.com> wrote:
>
> The sensors update with the fix is scheduled for about a week out, well
> before 3.3 ships.

That's almost certainly *not* going to help.

Guys, people don't update their user space. Some people run modern
kernels on the enterprise distros - and those can be *years* out of
date.

If people report problems, we revert things. It's that simple. It
really doesn't matter if you call it a user space bug or not - if user
space depends on what we used to do, then we continue to do it.

We can *try* the kernel change, but I can already tell you that
anybody who thinks that "sensors will be fixed by all users by the
time the kernel comes out" is likely totally full of shit. Not to
mention that it apparently *already* causes problems for people who
want to test -next, and this breaks those peoples setup, and thus
means that -next gets less testing.

Really. "It's a bug in user space" is *NOT* an excuse for breaking
things. Never was. Never is. There are (other) excuses for breaking
things, but "user space did something I didn't expect it to do, and I
consider it a bug" is absolutely not one of them.

                       Linus

  reply	other threads:[~2012-01-31 16:46 UTC|newest]

Thread overview: 75+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-30 21:56 sysfs regression: wrong link counts Jiri Slaby
2012-01-30 22:06 ` Greg KH
2012-01-30 22:10   ` Alan Cox
2012-01-30 22:27     ` Greg KH
2012-01-30 22:43       ` Al Viro
2012-01-30 22:56         ` Al Viro
2012-01-31  1:27       ` Eric W. Biederman
2012-01-31 10:48         ` Jiri Slaby
2012-01-31 12:44           ` Eric W. Biederman
2012-01-31 16:45             ` Linus Torvalds [this message]
2012-01-31 19:18               ` Al Viro
2012-02-01  5:06               ` Eric W. Biederman
2012-02-01 22:21                 ` [PATCH] sysfs: Optionally count subdirectories to support buggy applications Eric W. Biederman
2012-02-01 22:24                   ` Greg Kroah-Hartman
2012-02-01 22:44                     ` Eric W. Biederman
2012-02-01 22:49                       ` Greg Kroah-Hartman
2012-02-01 22:31                   ` Dave Jones
2012-02-01 22:35                   ` Jiri Slaby
2012-02-01 23:15                   ` Linus Torvalds
2012-02-01 23:18                     ` Linus Torvalds
2012-02-02  1:22                       ` Al Viro
2012-02-02 21:24                         ` [RFC] killing boilerplate checks in ->link/->mkdir/->rename Al Viro
2012-02-02 23:46                           ` Linus Torvalds
2012-02-03  1:16                             ` Al Viro
2012-02-03  1:45                               ` Al Viro
2012-02-03  2:00                                 ` Linus Torvalds
2012-02-03 14:57                               ` Chris Mason
2012-02-03 17:08                               ` Al Viro
2012-02-03 19:34                                 ` Artem Bityutskiy
2012-02-06  8:50                                 ` Artem Bityutskiy
2012-02-06 13:56                                   ` Al Viro
2012-02-06 17:05                                     ` Artem Bityutskiy
2012-02-06 17:11                                       ` Al Viro
2012-02-07  7:21                                         ` Artem Bityutskiy
2012-02-06 22:49                               ` Dave Chinner
2012-02-03  8:25                           ` Andreas Dilger
2012-02-03 17:03                             ` Al Viro
2012-02-04  7:42                               ` Andreas Dilger
2012-03-05 13:30                       ` [PATCH] sysfs: Optionally count subdirectories to support buggy applications Jiri Slaby
2012-03-05 16:09                         ` Greg Kroah-Hartman
2012-03-05 16:47                           ` Linus Torvalds
2012-03-08 21:05                             ` Greg Kroah-Hartman
2012-03-08 22:18                             ` Eric W. Biederman
2012-03-08 23:40                               ` Linus Torvalds
2012-03-08 21:28                           ` Eric W. Biederman
2012-03-08 21:34                           ` [PATCH 1/3] sysfs: Compact sysfs_dirent s_flags into a byte Eric W. Biederman
2012-03-08 21:36                             ` [PATCH 2/3] sysfs: Maintain usable nlink directory counts Eric W. Biederman
2012-03-08 21:37                               ` [PATCH 3/3] sysfs: Remove SYSFS_FLAG_REMOVED and use sd->s_nlink == 0 instead Eric W. Biederman
2012-03-09  3:40                                 ` Linus Torvalds
2012-03-08 22:28                             ` [PATCH 1/3] sysfs: Compact sysfs_dirent s_flags into a byte Greg Kroah-Hartman
2012-03-09  2:49                               ` Eric W. Biederman
2012-01-31  3:45     ` sysfs regression: wrong link counts Eric W. Biederman
2012-01-31 11:54       ` Alan Cox
2012-01-30 22:52 ` Kay Sievers
2012-01-31 10:41   ` network regression: cannot rename netdev twice Jiri Slaby
2012-01-31 10:52     ` Kay Sievers
2012-01-31 11:00       ` Jiri Slaby
2012-01-31 11:13         ` Kay Sievers
2012-01-31 11:17           ` Jiri Slaby
2012-01-31 11:58             ` Kay Sievers
2012-01-31 14:18               ` Eric W. Biederman
2012-01-31 14:40                 ` [PATCH] sysfs: Update the name hash when renaming sysfs entries Eric W. Biederman
2012-01-31 14:41                   ` Jiri Slaby
2012-01-31 14:55                   ` Greg KH
2012-02-04  2:14       ` network regression: cannot rename netdev twice Henrique de Moraes Holschuh
2012-02-06 20:03         ` Kay Sievers
2012-02-08  2:00           ` Henrique de Moraes Holschuh
2012-02-08  3:50             ` Kay Sievers
2012-02-08  6:42               ` Valdis.Kletnieks
2012-02-08 10:57                 ` Kay Sievers
2012-02-08 20:06                   ` Valdis.Kletnieks
2012-02-08 20:27                     ` Stephen Hemminger
2012-02-08 23:48                     ` Kay Sievers
2012-01-31  1:32 ` sysfs regression: wrong link counts Eric W. Biederman
2012-02-01 18:29 ` Maciej Rutecki

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