On Mon, Mar 04, 2024 at 04:49:47AM +0000, Borah, Chaitanya Kumar wrote: > After bisecting the tree, the following patch [4] seems to be the first "bad" > commit > > ````````````````````````````````````````````````````````````````````````````````````````````````````````` > commit ac7130117e8860081be88149061b5abb654d5759 > Author: Matthew Wilcox (Oracle) mailto:willy@xxxxxxxxxxxxx > Date: Tue Feb 27 17:42:41 2024 +0000 > > mm: use free_unref_folios() in put_pages_list() > > Break up the list of folios into batches here so that the folios are more > likely to be cache hot when doing the rest of the processing. > > Link: https://lkml.kernel.org/r/20240227174254.710559-8-willy@xxxxxxxxxxxxx > Signed-off-by: Matthew Wilcox (Oracle) mailto:willy@xxxxxxxxxxxxx > ````````````````````````````````````````````````````````````````````````````````````````````````````````` > > We could not revert the patch because of a build errors but resetting to the parent of the commit seems to fix the issue > > Could you please check why the patch causes this regression and provide a fix if necessary? Could you try putting the two: - list_del(&folio->lru); statements back in and see if that fixes it?
