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authorRalph Campbell <rcampbell@nvidia.com>2020-07-24 01:30:00 +0300
committerJason Gunthorpe <jgg@nvidia.com>2020-07-28 22:20:33 +0300
commit5143192cd410c4fc83be09a2e73423765aee072b (patch)
treee6943dd73d6cad7a9afc3fdeeb90542d5bef4a50 /mm/migrate.c
parent1a77decd0caed0bc5b6f5e474981d574076f0841 (diff)
downloadlinux-5143192cd410c4fc83be09a2e73423765aee072b.tar.xz
mm/migrate: add a flags parameter to migrate_vma
The src_owner field in struct migrate_vma is being used for two purposes, it acts as a selection filter for which types of pages are to be migrated and it identifies device private pages owned by the caller. Split this into separate parameters so the src_owner field can be used just to identify device private pages owned by the caller of migrate_vma_setup(). Rename the src_owner field to pgmap_owner to reflect it is now used only to identify which device private pages to migrate. Link: https://lore.kernel.org/r/20200723223004.9586-3-rcampbell@nvidia.com Signed-off-by: Ralph Campbell <rcampbell@nvidia.com> Reviewed-by: Bharata B Rao <bharata@linux.ibm.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'mm/migrate.c')
-rw-r--r--mm/migrate.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index f37729673558..e3ea68e3a08b 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -2287,7 +2287,9 @@ again:
goto next;
page = device_private_entry_to_page(entry);
- if (page->pgmap->owner != migrate->src_owner)
+ if (!(migrate->flags &
+ MIGRATE_VMA_SELECT_DEVICE_PRIVATE) ||
+ page->pgmap->owner != migrate->pgmap_owner)
goto next;
mpfn = migrate_pfn(page_to_pfn(page)) |
@@ -2295,7 +2297,7 @@ again:
if (is_write_device_private_entry(entry))
mpfn |= MIGRATE_PFN_WRITE;
} else {
- if (migrate->src_owner)
+ if (!(migrate->flags & MIGRATE_VMA_SELECT_SYSTEM))
goto next;
pfn = pte_pfn(pte);
if (is_zero_pfn(pfn)) {