commit df7f99670a4c76f269ae57ce91876b309417a316
author Joel Becker <jlbec@evilplan.org> Tue Feb 22 01:09:49 2011 -0800
committer Joel Becker <jlbec@evilplan.org> Wed May 18 03:30:58 2011 -0700
tree 5af5b63ab22089f32f1f464035df061bc2955e8e
parent df016c665b10ae80d8db67ec8103b50c5c234e5c

configfs: Don't try to d_delete() negative dentries.

When configfs is faking mkdir() on its subsystem or default group
objects, it starts by adding a negative dentry.  It then tries to
instantiate the group.  If that should fail, it must clean up after
itself.

I was using d_delete() here, but configfs_attach_group() promises to
return an empty dentry on error.  d_delete() explodes with the entry
dentry.  Let's try d_drop() instead.  The unhashing is what we want for
our dentry.

Signed-off-by: Joel Becker <jlbec@evilplan.org>