diff options
Diffstat (limited to 'fs/mount.h')
| -rw-r--r-- | fs/mount.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/mount.h b/fs/mount.h index 711a4093e475..c7abb7b394d8 100644 --- a/fs/mount.h +++ b/fs/mount.h @@ -9,7 +9,13 @@ struct mnt_namespace { atomic_t count; struct ns_common ns; struct mount * root; + /* + * Traversal and modification of .list is protected by either + * - taking namespace_sem for write, OR + * - taking namespace_sem for read AND taking .ns_lock. + */ struct list_head list; + spinlock_t ns_lock; struct user_namespace *user_ns; struct ucounts *ucounts; u64 seq; /* Sequence number to prevent loops */ @@ -133,9 +139,7 @@ struct proc_mounts { struct mnt_namespace *ns; struct path root; int (*show)(struct seq_file *, struct vfsmount *); - void *cached_mount; - u64 cached_event; - loff_t cached_index; + struct mount cursor; }; extern const struct seq_operations mounts_op; @@ -153,3 +157,5 @@ static inline bool is_anon_ns(struct mnt_namespace *ns) { return ns->seq == 0; } + +extern void mnt_cursor_del(struct mnt_namespace *ns, struct mount *cursor); |