mirror of
https://github.com/adulau/aha.git
synced 2024-12-28 11:46:19 +00:00
a2770d86b3
This reverts commit e9496ff46a. Quoth Al:
"it's dependent on a lot of other stuff not currently in mainline
and badly broken with current fs/namespace.c. Sorry, badly
out-of-order cherry-pick from old queue.
PS: there's a large pending series reworking the refcounting and
lifetime rules for vfsmounts that will, among other things, allow to
rip a subtree away _without_ dissolving connections in it, to be
garbage-collected when all active references are gone. It's
considerably saner wrt "is the subtree busy" logics, but it's nowhere
near being ready for merge at the moment; this changeset is one of the
things becoming possible with that sucker, but it certainly shouldn't
have been picked during this cycle. My apologies..."
Noticed-by: Eric Paris <eparis@redhat.com>
Requested-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
40 lines
890 B
C
40 lines
890 B
C
#ifndef _NAMESPACE_H_
|
|
#define _NAMESPACE_H_
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/path.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/wait.h>
|
|
|
|
struct mnt_namespace {
|
|
atomic_t count;
|
|
struct vfsmount * root;
|
|
struct list_head list;
|
|
wait_queue_head_t poll;
|
|
int event;
|
|
};
|
|
|
|
struct proc_mounts {
|
|
struct seq_file m; /* must be the first element */
|
|
struct mnt_namespace *ns;
|
|
struct path root;
|
|
int event;
|
|
};
|
|
|
|
struct fs_struct;
|
|
|
|
extern struct mnt_namespace *create_mnt_ns(struct vfsmount *mnt);
|
|
extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *,
|
|
struct fs_struct *);
|
|
extern void put_mnt_ns(struct mnt_namespace *ns);
|
|
static inline void get_mnt_ns(struct mnt_namespace *ns)
|
|
{
|
|
atomic_inc(&ns->count);
|
|
}
|
|
|
|
extern const struct seq_operations mounts_op;
|
|
extern const struct seq_operations mountinfo_op;
|
|
extern const struct seq_operations mountstats_op;
|
|
|
|
#endif
|
|
#endif
|