On Tue, Jul 11, 2023 at 01:07:37AM +0100, Matthew Wilcox wrote: > The caller hints at the > folio size it wants, and this code you're highlighting limits it to be > less than MAX_PAGECACHE_ORDER. Yes sorry, if the write size is large we still max out at MAX_PAGECACHE_ORDER naturally. I don't doubt the rationale that that is a good idea. What I'm curious about is why are we OK to jump straight to MAX_PAGECACHE_ORDER from the start and if there are situations where perhaps a a not-so-aggressive high order may be desriable. How do we know? Luis
