diff options
| author | Jeff Garzik <jgarzik@pobox.com> | 2005-09-08 05:37:58 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-09-08 05:37:58 -0400 |
| commit | 5a2cec83a9bb1b4295aa8ab728fcb8ca1811a33c (patch) | |
| tree | 2f83dc6949763e77cf6422e696dc6146684dcf4e /fs/namespace.c | |
| parent | f2c853bca542f5ac0b036377637192a74f2091c2 (diff) | |
| parent | caf39e87cc1182f7dae84eefc43ca14d54c78ef9 (diff) | |
Merge /spare/repo/linux-2.6/
Diffstat (limited to 'fs/namespace.c')
| -rw-r--r-- | fs/namespace.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 79bd8a46e1e..34156260c9b 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -40,7 +40,7 @@ static inline int sysfs_init(void) __cacheline_aligned_in_smp DEFINE_SPINLOCK(vfsmount_lock); static struct list_head *mount_hashtable; -static int hash_mask, hash_bits; +static int hash_mask __read_mostly, hash_bits __read_mostly; static kmem_cache_t *mnt_cache; static inline unsigned long hash(struct vfsmount *mnt, struct dentry *dentry) @@ -1334,8 +1334,12 @@ asmlinkage long sys_pivot_root(const char __user *new_root, const char __user *p error = -EINVAL; if (user_nd.mnt->mnt_root != user_nd.dentry) goto out2; /* not a mountpoint */ + if (user_nd.mnt->mnt_parent == user_nd.mnt) + goto out2; /* not attached */ if (new_nd.mnt->mnt_root != new_nd.dentry) goto out2; /* not a mountpoint */ + if (new_nd.mnt->mnt_parent == new_nd.mnt) + goto out2; /* not attached */ tmp = old_nd.mnt; /* make sure we can reach put_old from new_root */ spin_lock(&vfsmount_lock); if (tmp != new_nd.mnt) { |