diff options
Diffstat (limited to 'fs/namespace.c')
| -rw-r--r-- | fs/namespace.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 99572dd08336..88fc3f4d77ed 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -703,11 +703,10 @@ out: return is_covered; } -static struct mountpoint *new_mountpoint(struct dentry *dentry) +static struct mountpoint *lookup_mountpoint(struct dentry *dentry) { struct hlist_head *chain = mp_hash(dentry); struct mountpoint *mp; - int ret; hlist_for_each_entry(mp, chain, m_hash) { if (mp->m_dentry == dentry) { @@ -718,6 +717,14 @@ static struct mountpoint *new_mountpoint(struct dentry *dentry) return mp; } } + return NULL; +} + +static struct mountpoint *new_mountpoint(struct dentry *dentry) +{ + struct hlist_head *chain = mp_hash(dentry); + struct mountpoint *mp; + int ret; mp = kmalloc(sizeof(struct mountpoint), GFP_KERNEL); if (!mp) @@ -1818,7 +1825,9 @@ retry: namespace_lock(); mnt = lookup_mnt(path); if (likely(!mnt)) { - struct mountpoint *mp = new_mountpoint(dentry); + struct mountpoint *mp = lookup_mountpoint(dentry); + if (!mp) + mp = new_mountpoint(dentry); if (IS_ERR(mp)) { namespace_unlock(); mutex_unlock(&dentry->d_inode->i_mutex); |