From: Oren Laadan <orenl-RdfvBDnrOixBDgjK7y7TUQ@public.gmane.org>
To: Sukadev Bhattiprolu
<sukadev-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
Cc: Andrew Morton <akpm-3NddpPZAyC0@public.gmane.org>,
randy.dunlap-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org,
mtk.manpages-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org,
pavel-+ZI9xUNit7I@public.gmane.org,
hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org,
Pavel Emelyanov <xemul-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>,
Louis.Rilling-aw0BnHfMbSpBDgjK7y7TUQ@public.gmane.org,
kosaki.motohiro-+CUm20s59erQFUHtdCDX3A@public.gmane.org,
mingo-X9Un+BFzKDI@public.gmane.org,
Alexey Dobriyan
<adobriyan-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"Eric W. Biederman"
<ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>,
arnd-r2nGTMty4D4@public.gmane.org,
Nathan Lynch <nathanl-V7BBcbaFuwjMbYB6QlFGEg@public.gmane.org>,
roland-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Containers
<containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org
Subject: Re: [v9][PATCH 8/9] Define clone3() syscall
Date: Sun, 25 Oct 2009 13:23:58 -0400 [thread overview]
Message-ID: <4AE489AE.2090606@librato.com> (raw)
In-Reply-To: <20091025034023.GI20327-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Sukadev Bhattiprolu wrote:
> Subject: [v9][PATCH 8/9] Define clone3() syscall
>
> Container restart requires that a task have the same pid it had when it was
> checkpointed. When containers are nested the tasks within the containers
> exist in multiple pid namespaces and hence have multiple pids to specify
> during restart.
>
> clone3(), intended for use during restart, is the same as clone(), except
> that it takes a 'pids' paramter. This parameter lets caller choose
> specific pid numbers for the child process, in the process's active and
> ancestor pid namespaces. (Descendant pid namespaces in general don't matter
> since processes don't have pids in them anyway, but see comments in
> copy_target_pids() regarding CLONE_NEWPID).
>
> Clone2() system call also attempts to address a second limitation of the
^^^^^^^^^^
s/Clone2/Clone3/
Acked-by: Oren Laadan <orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
next prev parent reply other threads:[~2009-10-25 17:23 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-25 3:35 [v9][PATCH 0/9] Implement clone3() system call Sukadev Bhattiprolu
[not found] ` <20091025033508.GA20327-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-10-25 3:37 ` [v9][PATCH 1/9] Factor out code to allocate pidmap page Sukadev Bhattiprolu
2009-10-25 3:37 ` [v9][PATCH 2/9] Have alloc_pidmap() return actual error code Sukadev Bhattiprolu
2009-10-25 3:38 ` [v9][PATCH 3/9] Define set_pidmap() function Sukadev Bhattiprolu
2009-10-25 3:38 ` [v9][PATCH 4/9] Add target_pids parameter to alloc_pid() Sukadev Bhattiprolu
2009-10-25 3:39 ` [v9][PATCH 5/9] Add target_pids parameter to copy_process() Sukadev Bhattiprolu
2009-10-25 3:39 ` [v9][PATCH 6/9] Check invalid clone flags Sukadev Bhattiprolu
[not found] ` <20091025033937.GG20327-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-10-25 17:08 ` Oren Laadan
2009-10-25 3:39 ` [v9][PATCH 7/9] Define do_fork_with_pids() Sukadev Bhattiprolu
2009-10-25 3:40 ` [v9][PATCH 8/9] Define clone3() syscall Sukadev Bhattiprolu
[not found] ` <20091025034023.GI20327-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-10-25 17:17 ` Linus Torvalds
2009-10-25 17:23 ` Oren Laadan [this message]
2009-10-25 3:40 ` [v9][PATCH 9/9] Document " Sukadev Bhattiprolu
[not found] ` <20091025034050.GJ20327-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-10-25 17:21 ` Oren Laadan
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