Hi Kirill, On Thu, Jan 30, 2025 at 12:00:41PM +0200, Kirill A. Shutemov wrote: > The recently introduced PG_dropbehind allows for freeing folios > immediately after writeback. Unlike PG_reclaim, it does not need vmscan > to be involved to get the folio freed. > > Instead of using folio_set_reclaim(), use folio_set_dropbehind() in > __shmem_writeback() > > It is safe to leave PG_dropbehind on the folio if, for some reason > (bug?), the folio is not in a writeback state after ->writepage(). > In these cases, the kernel had to clear PG_reclaim as it shared a page > flag bit with PG_readahead. > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> > Acked-by: David Hildenbrand <david@xxxxxxxxxx> Reviewed-by: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx> Thanks, Andi
