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-rw-r--r--fs/namespace.c15
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);