fuse: readdirplus: fix instantiate

Fuse does instantiation slightly differently from NFS/CIFS which use
d_materialise_unique().

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
CC: stable@vger.kernel.org

diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index bb6829720dd61e4c84e672b68bd98788456474bd..5dfbb5439e4ea562f92696a755a374227f5fb24f 100644 (file)
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1272,10 +1272,19 @@ static int fuse_direntplus_link(struct file *file,
        if (!inode)
                goto out;
 
-       alias = d_materialise_unique(dentry, inode);
-       err = PTR_ERR(alias);
-       if (IS_ERR(alias))
-               goto out;
+       if (S_ISDIR(inode->i_mode)) {
+               mutex_lock(&fc->inst_mutex);
+               alias = fuse_d_add_directory(dentry, inode);
+               mutex_unlock(&fc->inst_mutex);
+               err = PTR_ERR(alias);
+               if (IS_ERR(alias)) {
+                       iput(inode);
+                       goto out;
+               }
+       } else {
+               alias = d_splice_alias(inode, dentry);
+       }
+
        if (alias) {
                dput(dentry);
                dentry = alias;