From: Lennart Poettering <mzxreary-uLTowLwuiw4b1SvskN2V4Q@public.gmane.org>
To: Oleg Nesterov <oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: Kay Sievers <kay.sievers-tD+1rO4QERM@public.gmane.org>,
akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
roland-/Z5OmTQCD9xF6kxbq+BtvQ@public.gmane.org,
torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org
Subject: Re: + prctl-add-pr_setget_child_reaper-to-allow-simple-process-supervision .patch added to -mm tree
Date: Thu, 18 Aug 2011 14:43:53 +0200 [thread overview]
Message-ID: <20110818124353.GA2839@tango.0pointer.de> (raw)
In-Reply-To: <20110817134516.GA14136-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
On Wed, 17.08.11 15:45, Oleg Nesterov (oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org) wrote:
> You should mark the whole process as sub-reaper, not a single thread
> which does prctl(). The parent/child relationship is process-wide.
Hmm, how would we implement this best? Would it be sufficient to follow
group_leader pointer to set/get the flag, and to follow real_parent
instead of parent when looking for the reaper task (i.e. the one with
the flag set)?
Lennart
--
Lennart Poettering - Red Hat, Inc.
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WARNING: multiple messages have this Message-ID (diff)
From: Lennart Poettering <mzxreary@0pointer.de>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-man@vger.kernel.org, roland@hack.frob.com,
torvalds@linux-foundation.org
Subject: Re: + prctl-add-pr_setget_child_reaper-to-allow-simple-process-supervision .patch added to -mm tree
Date: Thu, 18 Aug 2011 14:43:53 +0200 [thread overview]
Message-ID: <20110818124353.GA2839@tango.0pointer.de> (raw)
In-Reply-To: <20110817134516.GA14136@redhat.com>
On Wed, 17.08.11 15:45, Oleg Nesterov (oleg@redhat.com) wrote:
> You should mark the whole process as sub-reaper, not a single thread
> which does prctl(). The parent/child relationship is process-wide.
Hmm, how would we implement this best? Would it be sufficient to follow
group_leader pointer to set/get the flag, and to follow real_parent
instead of parent when looking for the reaper task (i.e. the one with
the flag set)?
Lennart
--
Lennart Poettering - Red Hat, Inc.
next prev parent reply other threads:[~2011-08-18 12:43 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-16 20:11 + prctl-add-pr_setget_child_reaper-to-allow-simple-process-supervision.patch added to -mm tree akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b
[not found] ` <201108162011.p7GKBcY0023134-AB4EexQrvXRQetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>
2011-08-17 11:55 ` + prctl-add-pr_setget_child_reaper-to-allow-simple-process-supervision .patch " Oleg Nesterov
2011-08-17 11:55 ` Oleg Nesterov
[not found] ` <20110817115543.GA8745-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2011-08-17 13:05 ` Oleg Nesterov
2011-08-17 13:05 ` Oleg Nesterov
[not found] ` <20110817130531.GA12204-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2011-08-17 13:21 ` Kay Sievers
2011-08-17 13:21 ` Kay Sievers
[not found] ` <CAPXgP10A4rcQLht--h1d3PJE=oOrm=MSjGXTUSKVF+ssnkt_gw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-08-17 13:37 ` Alan Cox
2011-08-17 13:37 ` Alan Cox
[not found] ` <20110817143728.7abc955b-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>
2011-08-23 0:30 ` Colin Walters
2011-08-23 0:30 ` Colin Walters
2011-08-17 14:16 ` Oleg Nesterov
2011-08-17 14:16 ` Oleg Nesterov
2011-08-17 16:03 ` Denys Vlasenko
2011-08-17 16:03 ` Denys Vlasenko
2011-08-17 13:13 ` Kay Sievers
[not found] ` <CAPXgP12rYf2HmmsJAuJw=nrtcjTRR1WzDhLNM47eKhKA1UTfJQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-08-17 13:45 ` Oleg Nesterov
2011-08-17 13:45 ` Oleg Nesterov
[not found] ` <20110817134516.GA14136-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2011-08-17 15:45 ` Kay Sievers
2011-08-17 15:45 ` Kay Sievers
[not found] ` <CAPXgP101N_GESzpqu=P_H8cLoekMzb2_W2eWyAqATSjm4Gj9CA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-08-17 15:53 ` Alan Cox
2011-08-17 15:53 ` Alan Cox
2011-08-17 16:20 ` Oleg Nesterov
2011-08-17 16:20 ` Oleg Nesterov
[not found] ` <20110817162041.GA21406-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2011-08-17 16:47 ` Kay Sievers
2011-08-17 16:47 ` Kay Sievers
[not found] ` <CAPXgP13Dn2c-OnYg-Cty5r4JbqeH_zYPtXDj5GAfK1btoKYmDg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-08-17 18:57 ` Oleg Nesterov
2011-08-17 18:57 ` Oleg Nesterov
[not found] ` <20110817185709.GA27663-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2011-08-17 20:56 ` Kay Sievers
2011-08-17 20:56 ` Kay Sievers
2011-08-18 12:43 ` Lennart Poettering [this message]
2011-08-18 12:43 ` Lennart Poettering
[not found] ` <20110818124353.GA2839-kS5D54t9nk0aINubkmmoJbNAH6kLmebB@public.gmane.org>
2011-08-18 14:25 ` Oleg Nesterov
2011-08-18 14:25 ` Oleg Nesterov
2011-08-18 18:11 ` Kay Sievers
2011-08-18 18:48 ` Oleg Nesterov
2011-08-18 18:48 ` Oleg Nesterov
[not found] ` <20110818184857.GA12094-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2011-08-19 1:31 ` Kay Sievers
2011-08-19 1:31 ` Kay Sievers
2011-08-19 12:25 ` Oleg Nesterov
2011-08-19 12:25 ` Oleg Nesterov
[not found] ` <20110819122503.GA8411-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2011-08-19 12:44 ` Kay Sievers
2011-08-19 12:44 ` Kay Sievers
[not found] ` <CAPXgP11KC2fTWBVYo6CBXe924YAyTGhx9=UTBDf4cP5Acuo0NA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-08-19 13:13 ` Oleg Nesterov
2011-08-19 13:13 ` Oleg Nesterov
2011-08-19 14:20 ` Kay Sievers
2011-08-19 14:58 ` Oleg Nesterov
2011-08-19 14:58 ` Oleg Nesterov
[not found] ` <20110819145815.GA15420-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2011-08-20 15:33 ` Oleg Nesterov
2011-08-20 15:33 ` Oleg Nesterov
2011-08-21 18:33 ` Kay Sievers
2011-08-22 11:14 ` Oleg Nesterov
2011-08-22 11:14 ` Oleg Nesterov
[not found] ` <20110822111402.GA13248-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2011-08-22 23:48 ` Kay Sievers
2011-08-22 23:48 ` Kay Sievers
2011-08-18 21:23 ` Linus Torvalds
2011-08-18 21:23 ` Linus Torvalds
[not found] ` <CA+55aFxGDbNOhNQJe_LpUMcJCGcW8qFFWzC9H0_KW26Xzb0cXw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-08-18 21:55 ` Kay Sievers
2011-08-18 21:55 ` Kay Sievers
2011-08-18 22:22 ` Linus Torvalds
2011-08-18 22:22 ` Linus Torvalds
[not found] ` <CA+55aFyFnMRMuWSSpytwvpk9u5YysMRfTRELyhGX9grWbGyi6Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-08-19 0:48 ` Kay Sievers
2011-08-19 0:48 ` Kay Sievers
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