tree b6371b0c084ffb91f7304a7e392b28ccfdab8a2e
parent ab883af53ec1b87add43b32a28d8347f17d5155b
author Pavel Emelyanov <xemul@openvz.org> 1209542071 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1209569389 -0700

pidns: make pid->level and pid_ns->level unsigned

These values represent the nesting level of a namespace and pids living in it,
and it's always non-negative.

Turning this from int to unsigned int saves some space in pid.c (11 bytes on
x86 and 64 on ia64) by letting the compiler optimize the pid_nr_ns a bit.
E.g.  on ia64 this removes the sign extension calls, which compiler adds to
optimize access to pid->nubers[ns->level].

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>