Section 1137. Statute of limitations

Every deed given pursuant to the
  provisions of this  article  shall  be  presumptive  evidence  that  the
  proceeding and all proceedings therein and all proceedings prior thereto
  from  and including the assessment of the real property affected and all
  notices required  by  law  were  regular  and  in  accordance  with  all
  provisions of law relating thereto. After two years from the date of the
  recording  of  such  deed,  the  presumption  shall  be  conclusive.  No
  proceeding  to  set  aside  such  deed  may  be  maintained  unless  the
  proceeding  is  commenced  and a notice of pendency of the proceeding is
  filed in the office of the proper county clerk prior to  the  time  that
  the presumption becomes conclusive.