mount_pseudo(): drop 'name' argument, switch to d_make_root()
Once upon a time we used to set ->d_name of e.g. pipefs root
so that d_path() on pipes would work. These days it's
completely pointless - dentries of pipes are not even connected
to pipefs root. However, mount_pseudo() had set the root
dentry name (passed as the second argument) and callers
kept inventing names to pass to it. Including those that
didn't *have* any non-root dentries to start with...
All of that had been pointless for about 8 years now; it's
time to get rid of that cargo-culting...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/libfs.c b/fs/libfs.c
index 4b59b18..030e545 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -239,14 +239,12 @@ static const struct super_operations simple_super_operations = {
* Common helper for pseudo-filesystems (sockfs, pipefs, bdev - stuff that
* will never be mountable)
*/
-struct dentry *mount_pseudo_xattr(struct file_system_type *fs_type, char *name,
+struct dentry *mount_pseudo_xattr(struct file_system_type *fs_type,
const struct super_operations *ops, const struct xattr_handler **xattr,
const struct dentry_operations *dops, unsigned long magic)
{
struct super_block *s;
- struct dentry *dentry;
struct inode *root;
- struct qstr d_name = QSTR_INIT(name, strlen(name));
s = sget_userns(fs_type, NULL, set_anon_super, SB_KERNMOUNT|SB_NOUSER,
&init_user_ns, NULL);
@@ -271,13 +269,9 @@ struct dentry *mount_pseudo_xattr(struct file_system_type *fs_type, char *name,
root->i_ino = 1;
root->i_mode = S_IFDIR | S_IRUSR | S_IWUSR;
root->i_atime = root->i_mtime = root->i_ctime = current_time(root);
- dentry = __d_alloc(s, &d_name);
- if (!dentry) {
- iput(root);
+ s->s_root = d_make_root(root);
+ if (!s->s_root)
goto Enomem;
- }
- d_instantiate(dentry, root);
- s->s_root = dentry;
s->s_d_op = dops;
s->s_flags |= SB_ACTIVE;
return dget(s->s_root);