On Wed, Dec 06, 2023 at 08:44:42PM +0000, Matthew Wilcox (Oracle) wrote: > Folios of order 1 have no space to store the deferred list. This is > not a problem for the page cache as file-backed folios are never > placed on the deferred list. All we need to do is prevent the core > MM from touching the deferred list for order 1 folios and remove the > code which prevented us from allocating order 1 folios. > > Link: https://lore.kernel.org/linux-mm/90344ea7-4eec-47ee-5996-0c22f42d6a6a@xxxxxxxxxx/ > Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> Documentation of this structural quirk at the definition of struct folio? Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx
