linux-stable/arch/mips/mm
Serge E. Hallyn b460cbc581 pid namespaces: define is_global_init() and is_container_init()
is_init() is an ambiguous name for the pid==1 check.  Split it into
is_global_init() and is_container_init().

A cgroup init has it's tsk->pid == 1.

A global init also has it's tsk->pid == 1 and it's active pid namespace
is the init_pid_ns.  But rather than check the active pid namespace,
compare the task structure with 'init_pid_ns.child_reaper', which is
initialized during boot to the /sbin/init process and never changes.

Changelog:

	2.6.22-rc4-mm2-pidns1:
	- Use 'init_pid_ns.child_reaper' to determine if a given task is the
	  global init (/sbin/init) process. This would improve performance
	  and remove dependence on the task_pid().

	2.6.21-mm2-pidns2:

	- [Sukadev Bhattiprolu] Changed is_container_init() calls in {powerpc,
	  ppc,avr32}/traps.c for the _exception() call to is_global_init().
	  This way, we kill only the cgroup if the cgroup's init has a
	  bug rather than force a kernel panic.

[akpm@linux-foundation.org: fix comment]
[sukadev@us.ibm.com: Use is_global_init() in arch/m32r/mm/fault.c]
[bunk@stusta.de: kernel/pid.c: remove unused exports]
[sukadev@us.ibm.com: Fix capability.c to work with threaded init]
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Acked-by: Pavel Emelianov <xemul@openvz.org>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Herbert Poetzel <herbert@13thfloor.at>
Cc: Kirill Korotaev <dev@sw.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-19 11:53:37 -07:00
..
c-r3k.c [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
c-r4k.c [MIPS] Cache: Provide more information on cache policy on bootup. 2007-10-16 18:23:49 +01:00
c-tx39.c [MIPS] Allow hardwiring of the CPU type to a single type for optimization. 2007-10-11 23:46:15 +01:00
cache.c Remove dma_cache_(wback|inv|wback_inv) functions 2007-10-17 08:42:57 -07:00
cerr-sb1.c [MIPS] checkfiles: Fix "need space after that ','" errors. 2007-10-11 23:46:15 +01:00
cex-gen.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cex-sb1.S [MIPS] Sibyte: #if CONFIG_* doesn't fly. 2006-02-21 16:58:23 +00:00
dma-default.c [MIPS] Allow hardwiring of the CPU type to a single type for optimization. 2007-10-11 23:46:15 +01:00
extable.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fault.c pid namespaces: define is_global_init() and is_container_init() 2007-10-19 11:53:37 -07:00
highmem.c [MIPS] Remove LIMITED_DMA support 2007-05-11 14:28:31 +01:00
init.c [MIPS] Fix aliasing bug in copy_user_highpage, take 2. 2007-10-16 18:23:49 +01:00
ioremap.c Detach sched.h from mm.h 2007-05-21 09:18:19 -07:00
Makefile [MIPS] Sibyte: Replace SB1 cachecode with standard R4000 class cache code. 2007-10-11 23:46:05 +01:00
pg-r4k.c [MIPS] Allow hardwiring of the CPU type to a single type for optimization. 2007-10-11 23:46:15 +01:00
pg-sb1.c [MIPS] checkfiles: Fix "need space after that ','" errors. 2007-10-11 23:46:15 +01:00
pgtable-32.c [MIPS] Add external declaration of pagetable_init() to pgalloc.h 2007-02-18 21:31:36 +00:00
pgtable-64.c [MIPS] Add external declaration of pagetable_init() to pgalloc.h 2007-02-18 21:31:36 +00:00
pgtable.c [MIPS] checkfiles: Fix "need space after that ','" errors. 2007-10-11 23:46:15 +01:00
sc-ip22.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sc-mips.c [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
sc-r5k.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sc-rm7k.c [MIPS] Use __ffs() instead of ffs() for waybit calculation. 2006-04-19 04:14:30 +02:00
tlb-r3k.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tlb-r4k.c [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
tlb-r8k.c [MIPS] checkfiles: Fix "need space after that ','" errors. 2007-10-11 23:46:15 +01:00
tlbex-fault.S [MIPS] Stacktrace build-fix and improvement 2006-10-01 23:16:58 +01:00
tlbex.c [MIPS] Revert "[MIPS] tlbex.c: Cleanup __init usage." 2007-10-13 00:53:00 +01:00