From: Oleg Nesterov <oleg@redhat.com>
To: Tejun Heo <tj@kernel.org>
Cc: Matt Fleming <matt@console-pimps.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/1] kthreads: allow_signal: don't play with ->blocked
Date: Wed, 17 Aug 2011 20:26:59 +0200 [thread overview]
Message-ID: <20110817182658.GA26946@redhat.com> (raw)
In-Reply-To: <20110817072746.GI4254@htj.dyndns.org>
On 08/17, Tejun Heo wrote:
>
> On Tue, Aug 16, 2011 at 10:50:22PM +0100, Matt Fleming wrote:
> > On Tue, 2011-08-16 at 21:51 +0200, Tejun Heo wrote:
> > > I agree with the patchset but given that daemonize() isn't all that
> > > popular and you already posted most (or was it all?) conversions,
Yes, with the patches I sent daemonize() has no callers.
> but in this case it's an interface which is
> quite unpopular and with relatively easy workaround (just use
> kthread).
Agreed.
> The worst thing we can do regarding API change is silently changing
> semantics while not changing the interface.
> ...
> Out-of-kernel user which depended on the combination working would now
> be left with code which compiles fine but behaves differently, which
> sucks big time.
Yes, this is of course possible.
> So, let's please collect all the
> related patches into one series,
This is what I can't understand ;) This connects to your
"How do you wanna route these" question in another thread.
> drop all in-kernel daemonize() users,
> kill daemonize() and then change allow_signal() behavior.
OK, if we kill daemonize() without the deprecation stage, this is fine.
Initially I assumed it won't go away soon, and this sigdelset()
is really nasty although minor.
Oleg.
next prev parent reply other threads:[~2011-08-17 18:30 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-11 13:56 [PATCH 00/41] signal: Use set_current_blocked() Matt Fleming
2011-08-11 13:56 ` [PATCH 01/41] alpha: " Matt Fleming
2011-08-11 13:56 ` [PATCH 02/41] arm: " Matt Fleming
2011-08-11 17:04 ` Will Deacon
2011-08-11 13:56 ` [PATCH 03/41] avr32: Don't mask signals in the error path Matt Fleming
2011-08-11 13:56 ` [PATCH 04/41] avr32: use set_current_blocked() in handle_signal/sys_rt_sigreturn Matt Fleming
2011-08-11 13:56 ` [PATCH 05/41] blackfin: Use set_current_blocked() Matt Fleming
2011-08-11 13:56 ` [PATCH 06/41] cris: " Matt Fleming
2011-08-11 13:56 ` [PATCH 07/41] frv: " Matt Fleming
2011-08-11 13:56 ` [PATCH 08/41] h8300: " Matt Fleming
2011-08-11 13:56 ` [PATCH 09/41] ia64: " Matt Fleming
2011-08-11 13:56 ` [PATCH 10/41] m32r: " Matt Fleming
2011-08-11 13:56 ` [PATCH 11/41] m68k: " Matt Fleming
2011-08-11 13:56 ` [PATCH 12/41] microblaze: Don't reimplement force_sigsegv() Matt Fleming
2011-08-16 17:20 ` Oleg Nesterov
2011-08-16 17:20 ` Oleg Nesterov
2011-08-17 13:01 ` Michal Simek
2011-08-17 13:14 ` Oleg Nesterov
2011-08-17 13:25 ` Matt Fleming
2011-08-17 13:17 ` Matt Fleming
2011-08-17 13:22 ` Michal Simek
2011-08-11 13:56 ` [PATCH 13/41] microblaze: No need to reset handler if SA_ONESHOT Matt Fleming
2011-08-11 13:56 ` [PATCH 14/41] microblaze: Fix signal masking Matt Fleming
2011-08-11 13:56 ` [PATCH 15/41] microblaze: Use set_current_blocked() Matt Fleming
2011-08-11 13:56 ` [PATCH 16/41] MIPS: " Matt Fleming
2011-08-11 13:56 ` [PATCH 17/41] mn10300: " Matt Fleming
2011-08-11 13:56 ` [PATCH 18/41] OpenRISC: Don't reimplement force_sigsegv() Matt Fleming
2011-08-16 16:49 ` Oleg Nesterov
2011-08-16 19:33 ` Matt Fleming
2011-08-18 17:47 ` Oleg Nesterov
2011-08-11 13:56 ` [PATCH 19/41] OpenRISC: No need to reset handler if SA_ONESHOT Matt Fleming
2011-08-16 16:53 ` Oleg Nesterov
2011-08-11 13:56 ` [PATCH 20/41] OpenRISC: Don't mask signals if we fail to setup signal stack Matt Fleming
2011-08-11 13:56 ` [PATCH 21/41] OpenRISC: Use set_current_blocked() Matt Fleming
2011-08-11 13:56 ` [PATCH 22/41] parisc: " Matt Fleming
2011-08-11 13:56 ` [PATCH 23/41] powerpc: " Matt Fleming
2011-08-11 13:56 ` [PATCH 24/41] score: Don't mask signals if we fail to setup signal stack Matt Fleming
2011-08-11 13:56 ` [PATCH 25/41] score: Use set_current_blocked() Matt Fleming
2011-08-11 13:57 ` [PATCH 26/41] sh: No need to reset handler if SA_ONESHOT Matt Fleming
2011-08-16 17:25 ` Oleg Nesterov
2011-08-11 13:57 ` [PATCH 27/41] sh: Use set_current_blocked() Matt Fleming
2011-08-11 13:57 ` [PATCH 28/41] sparc: " Matt Fleming
2011-08-11 13:57 ` [PATCH 29/41] tile: " Matt Fleming
2011-08-11 17:10 ` Chris Metcalf
2011-08-11 13:57 ` [PATCH 30/41] um: " Matt Fleming
2011-08-11 13:57 ` [PATCH 31/41] um: Don't restore current->blocked on error Matt Fleming
2011-08-16 17:38 ` Oleg Nesterov
2011-08-11 13:57 ` [PATCH 32/41] unicore32: Use set_current_blocked() Matt Fleming
2011-08-18 8:34 ` Guan Xuetao
2011-08-11 13:57 ` [PATCH 33/41] xtensa: Don't reimplement force_sigsegv() Matt Fleming
2011-08-16 17:40 ` Oleg Nesterov
2011-08-11 13:57 ` [PATCH 34/41] xtensa: No need to reset handler if SA_ONESHOT Matt Fleming
2011-08-11 13:57 ` [PATCH 35/41] xtensa: Don't mask signals if we fail to setup signal stack Matt Fleming
2011-08-11 13:57 ` [PATCH 36/41] xtensa: Use set_current_blocked() Matt Fleming
2011-08-11 13:57 ` [PATCH 37/41] autofs4: " Matt Fleming
2011-08-16 17:47 ` Oleg Nesterov
2011-08-16 20:29 ` Matt Fleming
2011-08-11 13:57 ` [PATCH 38/41] coda: " Matt Fleming
2011-08-11 13:57 ` [PATCH 39/41] dlm: Remove another superfluous call to recalc_sigpending() Matt Fleming
2011-08-11 15:39 ` David Teigland
2011-08-16 19:36 ` Oleg Nesterov
2011-08-11 13:57 ` [PATCH 40/41] ncpfs: Use set_current_blocked() Matt Fleming
2011-08-16 17:56 ` Oleg Nesterov
2011-08-16 20:56 ` Matt Fleming
2011-08-17 12:04 ` Oleg Nesterov
2011-08-17 13:58 ` Matt Fleming
2011-08-17 14:41 ` Oleg Nesterov
[not found] ` <CA+i2_De=mKMHj++b5=ZPdXxp7pm2KzY+PzCaG++GWSud20a_qQ@mail.gmail.com>
2011-08-18 17:05 ` Oleg Nesterov
2011-08-18 20:09 ` Matt Fleming
2011-08-11 13:57 ` [PATCH 41/41] exit: Use __set_task_blocked() Matt Fleming
2011-08-16 18:06 ` Oleg Nesterov
2011-08-16 19:44 ` [PATCH 0/1] kthreads: allow_signal: don't play with ->blocked Oleg Nesterov
2011-08-16 19:44 ` [PATCH 1/1] " Oleg Nesterov
2011-08-16 19:51 ` Tejun Heo
2011-08-16 20:07 ` Oleg Nesterov
2011-08-16 21:50 ` Matt Fleming
2011-08-17 7:27 ` Tejun Heo
2011-08-17 9:56 ` Matt Fleming
2011-08-17 18:26 ` Oleg Nesterov [this message]
2011-08-16 21:51 ` [PATCH 41/41] exit: Use __set_task_blocked() Matt Fleming
2011-08-11 16:03 ` [PATCH 00/41] signal: Use set_current_blocked() Oleg Nesterov
2011-08-16 19:40 ` Matt Fleming
2011-08-17 17:01 ` Oleg Nesterov
2011-08-17 22:17 ` Matt Fleming
2011-08-18 11:09 ` Matt Fleming
2011-08-18 18:36 ` Oleg Nesterov
2011-08-16 19:58 ` Oleg Nesterov
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