Looks like delaying writes in disk cache increased memory consumption in Membuster, probably due to keeping write buffers around longer.
Created attachment 255118 [details]
Comment on attachment 255118 [details]
View in context: https://bugs.webkit.org/attachment.cgi?id=255118&action=review
> + Clear the cache write queue on critical memory pressure. There can be substantial amount of memory there and we
I thought you were going to hurry the writes instead but why not. This is much simpler :)
nit: Seems unnecessary to add a line here.
Re-opened since this is blocked by bug 146544