diff options
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/fs/namei.c b/fs/namei.c index 89248bf1b906..2e9110a37c0e 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -677,36 +677,38 @@ follow_link(struct path *link, struct nameidata *nd, void **p) static int follow_up_rcu(struct path *path) { - struct vfsmount *parent; + struct mount *mnt = real_mount(path->mnt); + struct mount *parent; struct dentry *mountpoint; - parent = real_mount(path->mnt)->mnt_parent; - if (parent == path->mnt) + parent = mnt->mnt_parent; + if (&parent->mnt == path->mnt) return 0; - mountpoint = path->mnt->mnt_mountpoint; + mountpoint = mnt->mnt.mnt_mountpoint; path->dentry = mountpoint; - path->mnt = parent; + path->mnt = &parent->mnt; return 1; } int follow_up(struct path *path) { - struct vfsmount *parent; + struct mount *mnt = real_mount(path->mnt); + struct mount *parent; struct dentry *mountpoint; br_read_lock(vfsmount_lock); - parent = real_mount(path->mnt)->mnt_parent; - if (parent == path->mnt) { + parent = mnt->mnt_parent; + if (&parent->mnt == path->mnt) { br_read_unlock(vfsmount_lock); return 0; } - mntget(parent); - mountpoint = dget(path->mnt->mnt_mountpoint); + mntget(&parent->mnt); + mountpoint = dget(mnt->mnt.mnt_mountpoint); br_read_unlock(vfsmount_lock); dput(path->dentry); path->dentry = mountpoint; mntput(path->mnt); - path->mnt = parent; + path->mnt = &parent->mnt; return 1; } |