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authorEric W. Biederman <ebiederm@xmission.com>2010-03-02 14:51:53 -0800
committerEric W. Biederman <ebiederm@xmission.com>2012-11-19 05:59:09 -0800
commit17cf22c33e1f1b5e435469c84e43872579497653 (patch)
treec5cec307c06f7e4ddc26e04e73c8833897b67113 /fs/hppfs
parent49f4d8b93ccf9454284b6f524b96c66d8d7fbccc (diff)
downloadlinux-17cf22c33e1f1b5e435469c84e43872579497653.tar.gz
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/hppfs')
-rw-r--r--fs/hppfs/hppfs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c
index 78f21f8dc2e..43b315f2002 100644
--- a/fs/hppfs/hppfs.c
+++ b/fs/hppfs/hppfs.c
@@ -710,7 +710,7 @@ static int hppfs_fill_super(struct super_block *sb, void *d, int silent)
struct vfsmount *proc_mnt;
int err = -ENOENT;
- proc_mnt = mntget(current->nsproxy->pid_ns->proc_mnt);
+ proc_mnt = mntget(task_active_pid_ns(current)->proc_mnt);
if (IS_ERR(proc_mnt))
goto out;