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Commit 130f77ec authored by Pavel Emelyanov's avatar Pavel Emelyanov Committed by Linus Torvalds
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pid namespaces: make proc_flush_task() actually from entries from multiple namespaces 



This means that proc_flush_task_mnt() is to be called for many proc mounts and
with different ids, depending on the namespace this pid is to be flushed from.

Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Cc: Paul Menage <menage@google.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 30e49c26

fs/proc/base.c

+16 −2
Original line number Diff line number Diff line
@@ -2259,8 +2259,22 @@ static void proc_flush_task_mnt(struct vfsmount *mnt, pid_t pid, pid_t tgid) 


void proc_flush_task(struct task_struct *task)

{

	proc_flush_task_mnt(proc_mnt, task->pid,

			thread_group_leader(task) ? 0 : task->tgid);

	int i, leader;

	struct pid *pid, *tgid;

	struct upid *upid;



	leader = thread_group_leader(task);

	proc_flush_task_mnt(proc_mnt, task->pid, leader ? task->tgid : 0);

	pid = task_pid(task);

	if (pid->level == 0)

		return;



	tgid = task_tgid(task);

	for (i = 1; i <= pid->level; i++) {

		upid = &pid->numbers[i];

		proc_flush_task_mnt(upid->ns->proc_mnt, upid->nr,

				leader ? 0 : tgid->numbers[i].nr);

	}

}



static struct dentry *proc_pid_instantiate(struct inode *dir,