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17cf22c33e
linux/arch/um
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Eric W. Biederman 17cf22c33e pidns: Use task_active_pid_ns where appropriate 
The expressions tsk->nsproxy->pid_ns and task_active_pid_ns
aka ns_of_pid(task_pid(tsk)) should have the same number of
cache line misses with the practical difference that
ns_of_pid(task_pid(tsk)) is released later in a processes life.

Furthermore by using task_active_pid_ns it becomes trivial
to write an unshare implementation for the the pid namespace.

So I have used task_active_pid_ns everywhere I can.

In fork since the pid has not yet been attached to the
process I use ns_of_pid, to achieve the same effect.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2012-11-19 05:59:09 -08:00
..
drivers pidns: Use task_active_pid_ns where appropriate 2012-11-19 05:59:09 -08:00
include Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2012-10-13 10:05:52 +09:00
kernel Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2012-10-13 10:05:52 +09:00
os-Linux Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2012-10-13 10:05:52 +09:00
scripts um: Preinclude include/linux/kern_levels.h 2012-09-27 20:20:09 +02:00
sys-ia64 uml: remove useless comments 2009-04-01 08:59:17 -07:00
sys-ppc um: get rid of pointless include "..." where include <...> will do 2012-10-09 22:28:45 +02:00
.gitignore um: tell git to ignore generated files 2010-03-06 11:26:28 -08:00
defconfig Merge branch 'for-linus-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml 2012-08-01 16:45:02 -07:00
Kconfig.char um: clean Kconfig up a bit 2011-11-02 14:15:29 +01:00
Kconfig.common Kconfig: clean up the long arch list for the UID16 config option 2012-10-09 16:22:13 +09:00
Kconfig.debug lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
Kconfig.net Fix common misspellings 2011-03-31 11:26:23 -03:00
Kconfig.rest um: switch to use of drivers/Kconfig 2011-11-02 14:15:41 +01:00
Kconfig.um timers: Fixup the Kconfig consolidation fallout 2012-05-21 23:43:46 +02:00
Makefile UAPI: Partition the header include path sets and add uapi/ header directories 2012-10-02 18:01:26 +01:00
Makefile-ia64
Makefile-os-Linux x86, um: get rid of arch/um/os symlink 2008-10-22 22:55:22 -07:00
Makefile-ppc
Makefile-skas