diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/mount.h | 3 | ||||
| -rw-r--r-- | fs/namespace.c | 47 |
2 files changed, 26 insertions, 24 deletions
diff --git a/fs/mount.h b/fs/mount.h index 9217e03ba5e7..7060d2a6f802 100644 --- a/fs/mount.h +++ b/fs/mount.h @@ -19,7 +19,8 @@ struct mount { #endif struct list_head mnt_mounts; /* list of children, anchored here */ struct list_head mnt_child; /* and going through their mnt_child */ - /* yet to be moved - up to mnt_list */ + /* yet to be moved - up to mnt_devname */ + struct list_head mnt_list; struct list_head mnt_expire; /* link in fs-specific expiry list */ struct list_head mnt_share; /* circular list of shared mounts */ struct list_head mnt_slave_list;/* list of slave mounts */ diff --git a/fs/namespace.c b/fs/namespace.c index bbe24defcac7..e15125356ac1 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -202,7 +202,7 @@ static struct mount *alloc_vfsmnt(const char *name) INIT_LIST_HEAD(&p->mnt_hash); INIT_LIST_HEAD(&p->mnt_child); INIT_LIST_HEAD(&p->mnt_mounts); - INIT_LIST_HEAD(&mnt->mnt_list); + INIT_LIST_HEAD(&p->mnt_list); INIT_LIST_HEAD(&p->mnt_expire); INIT_LIST_HEAD(&p->mnt_share); INIT_LIST_HEAD(&p->mnt_slave_list); @@ -618,8 +618,8 @@ static void commit_tree(struct mount *mnt) BUG_ON(parent == mnt); - list_add_tail(&head, &mnt->mnt.mnt_list); - list_for_each_entry(m, &head, mnt.mnt_list) { + list_add_tail(&head, &mnt->mnt_list); + list_for_each_entry(m, &head, mnt_list) { m->mnt_ns = n; __mnt_make_longterm(m); } @@ -987,7 +987,8 @@ static void show_type(struct seq_file *m, struct super_block *sb) static int show_vfsmnt(struct seq_file *m, void *v) { - struct vfsmount *mnt = list_entry(v, struct vfsmount, mnt_list); + struct mount *r = list_entry(v, struct mount, mnt_list); + struct vfsmount *mnt = &r->mnt; int err = 0; struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt }; @@ -1024,8 +1025,8 @@ const struct seq_operations mounts_op = { static int show_mountinfo(struct seq_file *m, void *v) { struct proc_mounts *p = m->private; - struct vfsmount *mnt = list_entry(v, struct vfsmount, mnt_list); - struct mount *r = real_mount(mnt); + struct mount *r = list_entry(v, struct mount, mnt_list); + struct vfsmount *mnt = &r->mnt; struct super_block *sb = mnt->mnt_sb; struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt }; struct path root = p->root; @@ -1092,7 +1093,8 @@ const struct seq_operations mountinfo_op = { static int show_vfsstat(struct seq_file *m, void *v) { - struct vfsmount *mnt = list_entry(v, struct vfsmount, mnt_list); + struct mount *r = list_entry(v, struct mount, mnt_list); + struct vfsmount *mnt = &r->mnt; struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt }; int err = 0; @@ -1235,7 +1237,7 @@ void umount_tree(struct mount *mnt, int propagate, struct list_head *kill) list_for_each_entry(p, &tmp_list, mnt_hash) { list_del_init(&p->mnt_expire); - list_del_init(&p->mnt.mnt_list); + list_del_init(&p->mnt_list); __touch_mnt_namespace(p->mnt_ns); p->mnt_ns = NULL; __mnt_make_shortterm(p); @@ -1331,7 +1333,7 @@ static int do_umount(struct mount *mnt, int flags) retval = -EBUSY; if (flags & MNT_DETACH || !propagate_mount_busy(mnt, 2)) { - if (!list_empty(&mnt->mnt.mnt_list)) + if (!list_empty(&mnt->mnt_list)) umount_tree(mnt, 1, &umount_list); retval = 0; } @@ -1451,7 +1453,7 @@ struct mount *copy_tree(struct mount *mnt, struct dentry *dentry, if (!q) goto Enomem; br_write_lock(vfsmount_lock); - list_add_tail(&q->mnt.mnt_list, &res->mnt.mnt_list); + list_add_tail(&q->mnt_list, &res->mnt_list); attach_mnt(q, &path); br_write_unlock(vfsmount_lock); } @@ -1492,12 +1494,12 @@ void drop_collected_mounts(struct vfsmount *mnt) int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg, struct vfsmount *root) { - struct vfsmount *mnt; + struct mount *mnt; int res = f(root, arg); if (res) return res; - list_for_each_entry(mnt, &root->mnt_list, mnt_list) { - res = f(mnt, arg); + list_for_each_entry(mnt, &real_mount(root)->mnt_list, mnt_list) { + res = f(&mnt->mnt, arg); if (res) return res; } @@ -2415,7 +2417,7 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns, } new_ns->root = &new->mnt; br_write_lock(vfsmount_lock); - list_add_tail(&new_ns->list, &new_ns->root->mnt_list); + list_add_tail(&new_ns->list, &new->mnt_list); br_write_unlock(vfsmount_lock); /* @@ -2476,18 +2478,17 @@ struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns, * create_mnt_ns - creates a private namespace and adds a root filesystem * @mnt: pointer to the new root filesystem mountpoint */ -static struct mnt_namespace *create_mnt_ns(struct vfsmount *mnt) +static struct mnt_namespace *create_mnt_ns(struct vfsmount *m) { - struct mnt_namespace *new_ns; - - new_ns = alloc_mnt_ns(); + struct mnt_namespace *new_ns = alloc_mnt_ns(); if (!IS_ERR(new_ns)) { - real_mount(mnt)->mnt_ns = new_ns; - __mnt_make_longterm(real_mount(mnt)); - new_ns->root = mnt; - list_add(&new_ns->list, &new_ns->root->mnt_list); + struct mount *mnt = real_mount(m); + mnt->mnt_ns = new_ns; + __mnt_make_longterm(mnt); + new_ns->root = m; + list_add(&new_ns->list, &mnt->mnt_list); } else { - mntput(mnt); + mntput(m); } return new_ns; } |
