| Message ID | 20220210072828.2930359-13-hch@lst.de (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [01/27] mm: remove a pointless CONFIG_ZONE_DEVICE check in memremap_pages | expand |
Reviewed-by: Alistair Popple <apopple@nvidia.com> On Thursday, 10 February 2022 6:28:13 PM AEDT Christoph Hellwig wrote: > Make the flow a little more clear and prepare for adding a new > ZONE_DEVICE memory type. > > Signed-off-by: Christoph Hellwig <hch@lst.de> > --- > mm/migrate.c | 27 ++++++++++++--------------- > 1 file changed, 12 insertions(+), 15 deletions(-) > > diff --git a/mm/migrate.c b/mm/migrate.c > index 30ecd7223656c1..746e1230886ddb 100644 > --- a/mm/migrate.c > +++ b/mm/migrate.c > @@ -2788,24 +2788,21 @@ void migrate_vma_pages(struct migrate_vma *migrate) > > mapping = page_mapping(page); > > - if (is_zone_device_page(newpage)) { > - if (is_device_private_page(newpage)) { > - /* > - * For now only support private anonymous when > - * migrating to un-addressable device memory. > - */ > - if (mapping) { > - migrate->src[i] &= ~MIGRATE_PFN_MIGRATE; > - continue; > - } > - } else { > - /* > - * Other types of ZONE_DEVICE page are not > - * supported. > - */ > + if (is_device_private_page(newpage)) { > + /* > + * For now only support private anonymous when migrating > + * to un-addressable device memory. > + */ > + if (mapping) { > migrate->src[i] &= ~MIGRATE_PFN_MIGRATE; > continue; > } > + } else if (is_zone_device_page(newpage)) { > + /* > + * Other types of ZONE_DEVICE page are not supported. > + */ > + migrate->src[i] &= ~MIGRATE_PFN_MIGRATE; > + continue; > } > > r = migrate_page(mapping, newpage, page, MIGRATE_SYNC_NO_COPY); >
diff --git a/mm/migrate.c b/mm/migrate.c index 30ecd7223656c1..746e1230886ddb 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -2788,24 +2788,21 @@ void migrate_vma_pages(struct migrate_vma *migrate) mapping = page_mapping(page); - if (is_zone_device_page(newpage)) { - if (is_device_private_page(newpage)) { - /* - * For now only support private anonymous when - * migrating to un-addressable device memory. - */ - if (mapping) { - migrate->src[i] &= ~MIGRATE_PFN_MIGRATE; - continue; - } - } else { - /* - * Other types of ZONE_DEVICE page are not - * supported. - */ + if (is_device_private_page(newpage)) { + /* + * For now only support private anonymous when migrating + * to un-addressable device memory. + */ + if (mapping) { migrate->src[i] &= ~MIGRATE_PFN_MIGRATE; continue; } + } else if (is_zone_device_page(newpage)) { + /* + * Other types of ZONE_DEVICE page are not supported. + */ + migrate->src[i] &= ~MIGRATE_PFN_MIGRATE; + continue; } r = migrate_page(mapping, newpage, page, MIGRATE_SYNC_NO_COPY);
Make the flow a little more clear and prepare for adding a new ZONE_DEVICE memory type. Signed-off-by: Christoph Hellwig <hch@lst.de> --- mm/migrate.c | 27 ++++++++++++--------------- 1 file changed, 12 insertions(+), 15 deletions(-)