On Thu, Apr 25, 2024 at 01:37:40PM +0200, Pankaj Raghav (Samsung) wrote: > From: Pankaj Raghav <p.raghav@xxxxxxxxxxx> > > Splitting a larger folio with a base order is supported using > split_huge_page_to_list_to_order() API. However, using that API for LBS > is resulting in an NULL ptr dereference error in the writeback path [1]. > > Refuse to split a folio if it has minimum folio order requirement until > we can start using split_huge_page_to_list_to_order() API. Splitting the > folio can be added as a later optimization. > > [1] https://gist.github.com/mcgrof/d12f586ec6ebe32b2472b5d634c397df Obviously this has to be tracked down and fixed before this patchset can be merged ... I think I have some ideas. Let me look a bit. How would I go about reproducing this?
