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| author | Len Brown <len.brown@intel.com> | 2005-09-08 01:45:47 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2005-09-08 01:45:47 -0400 |
| commit | 64e47488c913ac704d465a6af86a26786d1412a5 (patch) | |
| tree | d3b0148592963dcde26e4bb35ddfec8b1eaf8e23 /fs/namespace.c | |
| parent | 4a35a46bf1cda4737c428380d1db5d15e2590d18 (diff) | |
| parent | caf39e87cc1182f7dae84eefc43ca14d54c78ef9 (diff) | |
| download | op-kernel-dev-64e47488c913ac704d465a6af86a26786d1412a5.zip op-kernel-dev-64e47488c913ac704d465a6af86a26786d1412a5.tar.gz | |
Merge linux-2.6 with linux-acpi-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 79bd8a4..3415626 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) { |
