hugetlb_file_setup(): use d_alloc_pseudo()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 15 insertions, 4 deletions

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 99fe7ef2f09b..7f94e0cbc69c 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -918,6 +918,16 @@ static int get_hstate_idx(int page_size_log)
         return h - hstates;
 }
 
+static char *hugetlb_dname(struct dentry *dentry, char *buffer, int buflen)
+{
+        return dynamic_dname(dentry, buffer, buflen, "/%s (deleted)",
+                                dentry->d_name.name);
+}
+
+static struct dentry_operations anon_ops = {
+        .d_dname = hugetlb_dname
+};
+
 struct file *hugetlb_file_setup(const char *name, unsigned long addr,
                                 size_t size, vm_flags_t acctflag,
                                 struct user_struct **user,
@@ -926,7 +936,7 @@ struct file *hugetlb_file_setup(const char *name, unsigned long addr,
         struct file *file = ERR_PTR(-ENOMEM);
         struct inode *inode;
         struct path path;
-        struct dentry *root;
+        struct super_block *sb;
         struct qstr quick_string;
         struct hstate *hstate;
         unsigned long num_pages;
@@ -954,17 +964,18 @@ struct file *hugetlb_file_setup(const char *name, unsigned long addr,
                 }
         }
 
-        root = hugetlbfs_vfsmount[hstate_idx]->mnt_root;
+        sb = hugetlbfs_vfsmount[hstate_idx]->mnt_sb;
         quick_string.name = name;
         quick_string.len = strlen(quick_string.name);
         quick_string.hash = 0;
-        path.dentry = d_alloc(root, &quick_string);
+        path.dentry = d_alloc_pseudo(sb, &quick_string);
         if (!path.dentry)
                 goto out_shm_unlock;
 
+        d_set_d_op(path.dentry, &anon_ops);
         path.mnt = mntget(hugetlbfs_vfsmount[hstate_idx]);
         file = ERR_PTR(-ENOSPC);
-        inode = hugetlbfs_get_inode(root->d_sb, NULL, S_IFREG | S_IRWXUGO, 0);
+        inode = hugetlbfs_get_inode(sb, NULL, S_IFREG | S_IRWXUGO, 0);
         if (!inode)
                 goto out_dentry;