This is a revised version of the pids v5 patchset, modified to deal with
several stylistic and correctness issues put forward by Tejun Heo. The
main changes include:
* Add bitmask filtering of for_each_subsys() in the form of
for_each_subsys_which().
* Revert all succeeded can_fork() callbacks if any one of them fails
inside cgroup_can_fork().
* Move revert/reapply code to a reapply_fork() callback provided by each
cgroup controller. It is only run if the association for the specific
subsystem changed during the interlude between cgroup_can_fork() and
cgroup_post_fork().
* Pass an opaque pointer between cgroup_*_fork(), which holds the
"current" task css_set. The css_set is pinned by bumping the refcount
in cgroup_can_fork() and later unpinned in
cgroup_{cancel,post}_fork().
* A whole bunch of userland API and stylistic fixes.
Aleksa Sarai (3):
cgroups: use bitmask to filter for_each_subsys
cgroups: allow a cgroup subsystem to reject a fork
cgroups: add a pids subsystem
include/linux/cgroup.h | 13 +-
include/linux/cgroup_subsys.h | 4 +
init/Kconfig | 11 ++
kernel/Makefile | 1 +
kernel/cgroup.c | 132 +++++++++++++++---
kernel/cgroup_pids.c | 301 ++++++++++++++++++++++++++++++++++++++++++
kernel/fork.c | 18 ++-
7 files changed, 459 insertions(+), 21 deletions(-)
create mode 100644 kernel/cgroup_pids.c
--
2.3.2
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