Quoting Oren Laadan (orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org):

Checkpoint-restart (c/r): fixed races in file handling (comments from
from Al Viro). Updated and tested against v2.6.28-rc7 (feaf384...)

We'd like these to make it into -mm. This version addresses the
last of the known bugs. Please pull at least the first 11 patches,
as they are similar to before.

Patches 1-11 are stable, providing self- and external- c/r of a
single process.
Patches 12 and 13 are newer, adding support for c/r of multiple
processes.

The git tree tracking v11, branch 'ckpt-v11' (and older versions):
	git://git.ncl.cs.columbia.edu/pub/git/linux-cr.git

Restarting multiple processes requires 'mktree' userspace tool:
	git://git.ncl.cs.columbia.edu/pub/git/user-cr.git

Thanks Oren, this set is working great for me.  hours of
(run in container; while (1) { checkpoint; kill; restart in container;}
went fine.  500 simultaneoush checkpoints of the same task
went fine.  mktree works great.

thanks,
-serge
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