[PATCH v4 07/13] mm: add generic type support to migrate_vma helpers
From: Alex Sierra <hidden>
Date: 2021-07-17 19:22:14
Also in:
amd-gfx, dri-devel, linux-mm, linux-xfs
Subsystem:
memory management, memory management - memory policy and migration, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
Device generic type case added for migrate_vma_pages and migrate_vma_check_page helpers. Both, generic and private device types have the same conditions to decide to migrate pages from/to device memory. Signed-off-by: Alex Sierra <redacted> --- mm/migrate.c | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-)
diff --git a/mm/migrate.c b/mm/migrate.c
index 8c2430d3e77b..7bac06ae831e 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c@@ -2602,7 +2602,7 @@ static bool migrate_vma_check_page(struct page *page) * FIXME proper solution is to rework migration_entry_wait() so * it does not need to take a reference on page. */ - return is_device_private_page(page); + return is_device_page(page); } /* For file back page */
@@ -2891,7 +2891,7 @@ EXPORT_SYMBOL(migrate_vma_setup); * handle_pte_fault() * do_anonymous_page() * to map in an anonymous zero page but the struct page will be a ZONE_DEVICE - * private page. + * private or generic page. */ static void migrate_vma_insert_page(struct migrate_vma *migrate, unsigned long addr,
@@ -2956,13 +2956,11 @@ static void migrate_vma_insert_page(struct migrate_vma *migrate, */ __SetPageUptodate(page); - if (is_zone_device_page(page)) { - if (is_device_private_page(page)) { - swp_entry_t swp_entry; + if (is_device_private_page(page)) { + swp_entry_t swp_entry; - swp_entry = make_device_private_entry(page, vma->vm_flags & VM_WRITE); - entry = swp_entry_to_pte(swp_entry); - } + swp_entry = make_device_private_entry(page, vma->vm_flags & VM_WRITE); + entry = swp_entry_to_pte(swp_entry); } else { entry = mk_pte(page, vma->vm_page_prot); if (vma->vm_flags & VM_WRITE)
@@ -3064,10 +3062,10 @@ void migrate_vma_pages(struct migrate_vma *migrate) mapping = page_mapping(page); if (is_zone_device_page(newpage)) { - if (is_device_private_page(newpage)) { + if (is_device_page(newpage)) { /* - * For now only support private anonymous when - * migrating to un-addressable device memory. + * For now only support private and generic + * anonymous when migrating to device memory. */ if (mapping) { migrate->src[i] &= ~MIGRATE_PFN_MIGRATE;
--
2.32.0