On Wed, 21 Feb 2018 10:15:44 -0700 Khalid Aziz <khalid.aziz@xxxxxxxxxx> wrote: > If a processor supports special metadata for a page, for example ADI > version tags on SPARC M7, this metadata must be saved when the page is > swapped out. The same metadata must be restored when the page is swapped > back in. This patch adds two new architecture specific functions - > arch_do_swap_page() to be called when a page is swapped in, and > arch_unmap_one() to be called when a page is being unmapped for swap > out. These architecture hooks allow page metadata to be saved if the > architecture supports it. > > Signed-off-by: Khalid Aziz <khalid.aziz@xxxxxxxxxx> > Cc: Khalid Aziz <khalid@xxxxxxxxxxxxxx> > Acked-by: Jerome Marchand <jmarchan@xxxxxxxxxx> > Reviewed-by: Anthony Yznaga <anthony.yznaga@xxxxxxxxxx> Acked-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
