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proc: introduce a proc_pid_ns helper

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Factor out retrieving the per-sb pid namespaces from the sb private data
into an easier to understand helper.

Suggested-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2018-05-16 07:19:01 +02:00
parent 441bc62741
commit 76f668be1e
5 changed files with 19 additions and 20 deletions
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7
fs/proc/array.c
View file

@ -677,12 +677,7 @@ out:
static int children_seq_show(struct seq_file *seq, void *v)
{
struct inode *inode = seq->private;
pid_t pid;
pid = pid_nr_ns(v, inode->i_sb->s_fs_info);
seq_printf(seq, "%d ", pid);
seq_printf(seq, "%d ", pid_nr_ns(v, proc_pid_ns(seq->private)));
return 0;
}