From: Willy Tarreau <w@1wt.eu>
To: Takashi Iwai <tiwai@suse.de>
Cc: David Lang <david@lang.hm>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org, stable@vger.kernel.org,
ksummit-2013-discuss@lists.linux-foundation.org,
torvalds@linux-foundation.org
Subject: Re: [Ksummit-2013-discuss] When to push bug fixes to mainline
Date: Tue, 16 Jul 2013 20:39:27 +0200 [thread overview]
Message-ID: <20130716183927.GH15902@1wt.eu> (raw)
In-Reply-To: <s5hwqoqv4oo.wl%tiwai@suse.de>
Hi Takashi,
On Tue, Jul 16, 2013 at 06:40:39PM +0200, Takashi Iwai wrote:
> IMO, one of the reasons is the nature of stable-release: the stable
> tree is released soon after reviews of patches, so no actual
> regression tests can be done before the release.
>
> For finding a regression, patch reviews won't be enough; all patches
> have been already reviewed, thus essentially they must be all
> positive/good fixes. And the compile is OK. So what's the problem?
>
> Maybe some QA period before the release might help, but who would
> care? (Especially under the situation where everybody has own x.y
> stable tree?)
Almost nobody *tests* the previews. Except the few regular testers, but
they test in a finite environment so there is very little coverage in
the end. I'm not dismissing their work, because without them we'd have
zero testers. I'd prefer to have more than we currently have. But it's
also almost impossible to test reviews on servers, so a wide category
of fixes is probably never tested anyway during previews (eg: RAID
cards, or fixes for bugs affecting large amounts of memory/disk/cpus).
What makes the success of -stable is that Greg is able to re-release
very quickly when a bug is reported, sometimes even the same day. It's
something I'm totally incapable of, not having enough contiguous spare
time to work regularly enough on releases. That's the real key to
success. As a user, I look at the changes between versions and generally
only upgrade if something seems to be hitting me. That way I need less
updates and skip more regressions. And I'm sure most users do the same.
Regards,
Willy
next prev parent reply other threads:[~2013-07-16 18:39 UTC|newest]
Thread overview: 136+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-11 22:01 [ 00/19] 3.10.1-stable review Greg Kroah-Hartman
2013-07-11 22:01 ` [ 01/19] libceph: Fix NULL pointer dereference in auth client code Greg Kroah-Hartman
2013-07-11 22:01 ` [ 02/19] ceph: fix sleeping function called from invalid context Greg Kroah-Hartman
2013-07-11 22:01 ` [ 03/19] libceph: fix invalid unsigned->signed conversion for timespec encoding Greg Kroah-Hartman
2013-07-11 22:01 ` [ 04/19] drivers/cdrom/cdrom.c: use kzalloc() for failing hardware Greg Kroah-Hartman
2013-07-11 22:01 ` [ 05/19] module: do percpu allocation after uniqueness check. No, really! Greg Kroah-Hartman
2013-07-11 22:01 ` [ 06/19] charger-manager: Ensure event is not used as format string Greg Kroah-Hartman
2013-07-11 22:01 ` [ 07/19] hpfs: better test for errors Greg Kroah-Hartman
2013-07-11 22:01 ` [ 08/19] block: do not pass disk names as format strings Greg Kroah-Hartman
2013-07-11 22:01 ` [ 09/19] crypto: sanitize argument for format string Greg Kroah-Hartman
2013-07-11 22:01 ` Greg Kroah-Hartman
2013-07-11 22:01 ` [ 10/19] MAINTAINERS: add stable_kernel_rules.txt to stable maintainer information Greg Kroah-Hartman
2013-07-11 22:01 ` [ 11/19] futex: Take hugepages into account when generating futex_key Greg Kroah-Hartman
2013-07-11 22:01 ` [ 12/19] tty: Reset itty for other pty Greg Kroah-Hartman
2013-07-11 22:01 ` [ 13/19] Revert "serial: 8250_pci: add support for another kind of NetMos Technology PCI 9835 Multi-I/O Controller" Greg Kroah-Hartman
2013-07-11 22:01 ` [ 14/19] NFSv4.1 end back channel session draining Greg Kroah-Hartman
2013-07-11 22:01 ` [ 15/19] nfsd4: fix decoding of compounds across page boundaries Greg Kroah-Hartman
2013-07-11 22:01 ` [ 16/19] KVM: VMX: mark unusable segment as nonpresent Greg Kroah-Hartman
2013-07-11 22:01 ` [ 17/19] SCSI: sd: Fix parsing of temporary cache mode prefix Greg Kroah-Hartman
2013-07-11 22:01 ` [ 18/19] cpufreq: Fix cpufreq regression after suspend/resume Greg Kroah-Hartman
2013-07-11 22:01 ` [ 19/19] Revert "memcg: avoid dangling reference count in creation failure" Greg Kroah-Hartman
2013-07-11 22:14 ` [ 00/19] 3.10.1-stable review Josh Boyer
2013-07-14 22:54 ` Benjamin Herrenschmidt
2013-07-11 22:29 ` Dave Jones
2013-07-11 22:44 ` Greg Kroah-Hartman
2013-07-12 1:51 ` Steven Rostedt
2013-07-12 14:15 ` Guenter Roeck
2013-07-12 15:22 ` Linus Torvalds
2013-07-12 15:47 ` Steven Rostedt
2013-07-12 15:55 ` Linus Torvalds
2013-07-12 16:17 ` Ingo Molnar
2013-07-12 16:35 ` Josh Boyer
2013-07-12 16:36 ` Josh Boyer
2013-07-12 17:05 ` Greg Kroah-Hartman
2013-07-14 22:40 ` Benjamin Herrenschmidt
2013-07-12 16:48 ` Steven Rostedt
2013-07-12 17:31 ` Guenter Roeck
2013-07-12 17:50 ` Linus Torvalds
2013-07-12 18:11 ` Guenter Roeck
2013-07-12 19:35 ` Theodore Ts'o
2013-07-12 19:49 ` Steven Rostedt
2013-07-12 19:55 ` Willy Tarreau
2013-07-12 20:19 ` Dave Jones
2013-07-12 20:28 ` Steven Rostedt
2013-07-12 20:31 ` Steven Rostedt
2013-07-12 21:19 ` Justin M. Forbes
2013-07-13 0:47 ` Jochen Striepe
2013-07-13 11:11 ` Steven Rostedt
2013-07-13 15:10 ` Dave Jones
2013-07-13 15:54 ` Steven Rostedt
2013-07-12 19:50 ` Willy Tarreau
2013-07-12 20:47 ` Theodore Ts'o
2013-07-12 21:02 ` Guenter Roeck
2013-07-13 6:22 ` Greg Kroah-Hartman
2013-07-13 6:36 ` Willy Tarreau
2013-07-13 6:48 ` Greg Kroah-Hartman
2013-07-13 7:12 ` Willy Tarreau
2013-07-15 4:12 ` Li Zefan
2013-07-15 4:43 ` Willy Tarreau
2013-07-13 11:42 ` Theodore Ts'o
2013-07-13 18:27 ` Greg Kroah-Hartman
2013-07-14 2:22 ` Theodore Ts'o
2013-07-14 3:51 ` Greg Kroah-Hartman
2013-07-14 5:24 ` Guenter Roeck
2013-07-14 20:31 ` Geert Uytterhoeven
2013-07-13 6:43 ` Guenter Roeck
2013-07-13 6:58 ` Greg Kroah-Hartman
2013-07-14 23:52 ` Benjamin Herrenschmidt
2013-07-15 1:40 ` Linus Torvalds
2013-07-15 2:08 ` Benjamin Herrenschmidt
2013-07-14 22:58 ` Benjamin Herrenschmidt
2013-07-12 0:50 ` When to push bug fixes to mainline Theodore Ts'o
2013-07-12 1:20 ` [Ksummit-2013-discuss] " Nicholas A. Bellinger
2013-07-12 1:54 ` Steven Rostedt
2013-07-12 9:46 ` Jiri Kosina
2013-07-12 11:19 ` Josh Boyer
2013-07-12 2:57 ` John W. Linville
2013-07-12 3:34 ` Greg Kroah-Hartman
2013-07-12 7:32 ` James Bottomley
2013-07-12 17:20 ` H. Peter Anvin
2013-07-12 17:28 ` Greg Kroah-Hartman
2013-07-12 17:50 ` Steven Rostedt
2013-07-12 17:59 ` Linus Torvalds
2013-07-12 18:14 ` Steven Rostedt
2013-07-13 17:52 ` Geert Uytterhoeven
2013-07-12 17:57 ` Theodore Ts'o
2013-07-12 18:13 ` Guenter Roeck
2013-07-12 18:16 ` H. Peter Anvin
2013-07-12 18:28 ` H. Peter Anvin
2013-07-12 19:44 ` Linus Torvalds
2013-07-12 19:53 ` Steven Rostedt
2013-07-12 20:09 ` Shuah Khan
2013-07-12 20:33 ` Greg Kroah-Hartman
2013-07-12 20:46 ` Steven Rostedt
2013-07-12 22:19 ` H. Peter Anvin
2013-07-12 22:17 ` H. Peter Anvin
2013-07-13 6:44 ` Ingo Molnar
2013-07-13 0:24 ` Rafael J. Wysocki
2013-07-13 1:32 ` Greg Kroah-Hartman
2013-07-13 12:16 ` Rafael J. Wysocki
2013-07-12 3:25 ` Li Zefan
2013-07-15 4:22 ` Rob Landley
2013-07-12 5:14 ` Willy Tarreau
2013-07-16 7:19 ` David Lang
2013-07-16 16:40 ` [Ksummit-2013-discuss] " Takashi Iwai
2013-07-16 16:42 ` David Lang
2013-07-16 19:29 ` Takashi Iwai
2013-07-16 16:59 ` Mark Brown
2013-07-16 17:58 ` Luck, Tony
2013-07-16 17:58 ` Luck, Tony
2013-07-16 18:29 ` Linus Torvalds
2013-07-16 18:29 ` Linus Torvalds
2013-07-16 18:41 ` Steven Rostedt
2013-07-16 18:41 ` Steven Rostedt
2013-07-16 19:11 ` Greg Kroah-Hartman
2013-07-16 19:11 ` Greg Kroah-Hartman
2013-07-16 19:43 ` Steven Rostedt
2013-07-16 19:43 ` Steven Rostedt
2013-07-16 20:10 ` Willy Tarreau
2013-07-16 20:10 ` Willy Tarreau
2013-07-17 2:58 ` Ben Hutchings
2013-07-17 2:58 ` Ben Hutchings
2013-07-17 9:43 ` Li Zefan
2013-07-17 9:43 ` Li Zefan
2013-07-16 18:48 ` Willy Tarreau
2013-07-16 18:48 ` Willy Tarreau
2013-07-19 10:13 ` Ingo Molnar
2013-07-19 10:13 ` Ingo Molnar
2013-07-16 18:39 ` Willy Tarreau [this message]
2013-07-16 18:40 ` H. Peter Anvin
2013-07-16 20:29 ` David Lang
2013-07-12 17:11 ` H. Peter Anvin
2013-07-12 17:20 ` [ 00/19] 3.10.1-stable review Shuah Khan
2013-07-12 17:29 ` Greg Kroah-Hartman
2013-07-13 4:14 ` Satoru Takeuchi
2013-07-14 23:06 ` Benjamin Herrenschmidt
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