Regression on linux-next (next-20240228)

[Matthew Wilcox]

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 at infradead.org
> 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@infradead.org
>     Signed-off-by: Matthew Wilcox (Oracle) mailto:willy at infradead.org
> `````````````````````````````````````````````````````````````````````````````````````````````````````````
> 
> 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?