diff options
| -rw-r--r-- | fs/namespace.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 022e59afcb5e..31483c66ace8 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1531,23 +1531,33 @@ static struct mount *mnt_find_id_at_reverse(struct mnt_namespace *ns, u64 mnt_id static void *m_start(struct seq_file *m, loff_t *pos) { struct proc_mounts *p = m->private; + struct mount *mnt; down_read(&namespace_sem); - return mnt_find_id_at(p->ns, *pos); + mnt = mnt_find_id_at(p->ns, *pos); + if (mnt) + *pos = mnt->mnt_id_unique; + return mnt; } static void *m_next(struct seq_file *m, void *v, loff_t *pos) { - struct mount *next = NULL, *mnt = v; + struct mount *mnt = v; struct rb_node *node = rb_next(&mnt->mnt_node); - ++*pos; if (node) { - next = node_to_mount(node); + struct mount *next = node_to_mount(node); *pos = next->mnt_id_unique; + return next; } - return next; + + /* + * No more mounts. Set pos past current mount's ID so that if + * iteration restarts, mnt_find_id_at() returns NULL. + */ + *pos = mnt->mnt_id_unique + 1; + return NULL; } static void m_stop(struct seq_file *m, void *v) |