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author | Eric W. Biederman <ebiederm@xmission.com> | 2010-03-02 22:51:53 (GMT) |
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committer | Eric W. Biederman <ebiederm@xmission.com> | 2012-11-19 13:59:09 (GMT) |
commit | 17cf22c33e1f1b5e435469c84e43872579497653 (patch) | |
tree | c5cec307c06f7e4ddc26e04e73c8833897b67113 /fs/proc | |
parent | 49f4d8b93ccf9454284b6f524b96c66d8d7fbccc (diff) | |
download | linux-fsl-qoriq-17cf22c33e1f1b5e435469c84e43872579497653.tar.xz |
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>
Diffstat (limited to 'fs/proc')
-rw-r--r-- | fs/proc/root.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/proc/root.c b/fs/proc/root.c index 13ef624..fc16093 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -106,7 +106,7 @@ static struct dentry *proc_mount(struct file_system_type *fs_type, ns = (struct pid_namespace *)data; options = NULL; } else { - ns = current->nsproxy->pid_ns; + ns = task_active_pid_ns(current); options = data; } |