Wecanuse“what”asadeterminerbeforea pluraloruncountablenouninnominalrelative clauses.Whenweuse“what”inthisway,it means"allthe",butsuggeststhatit'snotvery much:
Shekeepswhatbooksshehasintheattic.
WhatinformationIhavesuggeststhat he'sOK.
IgaveherwhatcomfortIcould.
(alsothelittle(that)):
Usedonitsownorbeforeuncountable nounstomean“thesmallamount”of something.
Wedidwhatlittlewecouldtohelp.
IhandedoverwhatlittlemoneyIhadleft.
IspentwhatlittletimeIhadwithmyfamily.
(alsothefew...(that)):
Usedbeforepluralandcountablenouns tomean“thesmallnumber”ofsomething.
Theypackedwhatfewbelongingsthey had.
Whatfewvisitorswehavearealways madewelcome.
Theyfailedtomakethemostofwhatfew chancescametheirway.