1 files changed, 20 insertions, 12 deletions

diff --git a/fs/namei.c b/fs/namei.c
index a7dce91a7e42..48e1f60520ea 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -523,9 +523,10 @@ static void path_put_conditional(struct path *path, struct nameidata *nd)
 static inline void path_to_nameidata(struct path *path, struct nameidata *nd)
 {
         dput(nd->path.dentry);
-        if (nd->path.mnt != path->mnt)
+        if (nd->path.mnt != path->mnt) {
                 mntput(nd->path.mnt);
-        nd->path.mnt = path->mnt;
+                nd->path.mnt = path->mnt;
+        }
         nd->path.dentry = path->dentry;
 }
 
@@ -1641,7 +1642,7 @@ static struct file *do_last(struct nameidata *nd, struct path *path,
         if (nd->last.name[nd->last.len]) {
                 if (open_flag & O_CREAT)
                         goto exit;
-                nd->flags |= LOOKUP_DIRECTORY;
+                nd->flags |= LOOKUP_DIRECTORY | LOOKUP_FOLLOW;
         }
 
         /* just plain open? */
@@ -1830,6 +1831,8 @@ reval:
         }
         if (open_flag & O_DIRECTORY)
                 nd.flags |= LOOKUP_DIRECTORY;
+        if (!(open_flag & O_NOFOLLOW))
+                nd.flags |= LOOKUP_FOLLOW;
         filp = do_last(&nd, &path, open_flag, acc_mode, mode, pathname);
         while (unlikely(!filp)) { /* trailing symlink */
                 struct path holder;
@@ -1837,7 +1840,7 @@ reval:
                 void *cookie;
                 error = -ELOOP;
                 /* S_ISDIR part is a temporary automount kludge */
-                if ((open_flag & O_NOFOLLOW) && !S_ISDIR(inode->i_mode))
+                if (!(nd.flags & LOOKUP_FOLLOW) && !S_ISDIR(inode->i_mode))
                         goto exit_dput;
                 if (count++ == 32)
                         goto exit_dput;
@@ -2174,8 +2177,10 @@ int vfs_rmdir(struct inode *dir, struct dentry *dentry)
                 error = security_inode_rmdir(dir, dentry);
                 if (!error) {
                         error = dir->i_op->rmdir(dir, dentry);
-                        if (!error)
+                        if (!error) {
                                 dentry->d_inode->i_flags |= S_DEAD;
+                                dont_mount(dentry);
+                        }
                 }
         }
         mutex_unlock(&dentry->d_inode->i_mutex);
@@ -2259,7 +2264,7 @@ int vfs_unlink(struct inode *dir, struct dentry *dentry)
                 if (!error) {
                         error = dir->i_op->unlink(dir, dentry);
                         if (!error)
-                                dentry->d_inode->i_flags |= S_DEAD;
+                                dont_mount(dentry);
                 }
         }
         mutex_unlock(&dentry->d_inode->i_mutex);
@@ -2570,17 +2575,20 @@ static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
                 return error;
 
         target = new_dentry->d_inode;
-        if (target) {
+        if (target)
                 mutex_lock(&target->i_mutex);
-                dentry_unhash(new_dentry);
-        }
         if (d_mountpoint(old_dentry)||d_mountpoint(new_dentry))
                 error = -EBUSY;
-        else 
+        else {
+                if (target)
+                        dentry_unhash(new_dentry);
                 error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry);
+        }
         if (target) {
-                if (!error)
+                if (!error) {
                         target->i_flags |= S_DEAD;
+                        dont_mount(new_dentry);
+                }
                 mutex_unlock(&target->i_mutex);
                 if (d_unhashed(new_dentry))
                         d_rehash(new_dentry);
@@ -2612,7 +2620,7 @@ static int vfs_rename_other(struct inode *old_dir, struct dentry *old_dentry,
                 error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry);
         if (!error) {
                 if (target)
-                        target->i_flags |= S_DEAD;
+                        dont_mount(new_dentry);
                 if (!(old_dir->i_sb->s_type->fs_flags & FS_RENAME_DOES_D_MOVE))
                         d_move(old_dentry, new_dentry);
         }