ceph: switch back to testing for NULL folio->private in ceph_dirty_folio
Willy requested that we change this back to warning on folio->private being non-NULl. He's trying to kill off the PG_private flag, and so we'd like to catch where it's non-NULL. Add a VM_WARN_ON_FOLIO (since it doesn't exist yet) and change over to using that instead of VM_BUG_ON_FOLIO along with testing the ->private pointer. [ xiubli: define VM_WARN_ON_FOLIO macro in case DEBUG_VM is disabled reported by kernel test robot <lkp@intel.com> ] Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by:Jeff Layton <jlayton@kernel.org> Signed-off-by:
Xiubo Li <xiubli@redhat.com> Signed-off-by:
Ilya Dryomov <idryomov@gmail.com>
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