diff options
| author | Ralph Campbell <rcampbell@nvidia.com> | 2020-07-24 01:30:00 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-07-28 22:20:33 +0300 |
| commit | 5143192cd410c4fc83be09a2e73423765aee072b (patch) | |
| tree | e6943dd73d6cad7a9afc3fdeeb90542d5bef4a50 /include/linux/migrate.h | |
| parent | 1a77decd0caed0bc5b6f5e474981d574076f0841 (diff) | |
| download | linux-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 'include/linux/migrate.h')
| -rw-r--r-- | include/linux/migrate.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 3e546cbf03dd..16e03a51e5cf 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -180,6 +180,11 @@ static inline unsigned long migrate_pfn(unsigned long pfn) return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; } +enum migrate_vma_direction { + MIGRATE_VMA_SELECT_SYSTEM = 1 << 0, + MIGRATE_VMA_SELECT_DEVICE_PRIVATE = 1 << 1, +}; + struct migrate_vma { struct vm_area_struct *vma; /* @@ -199,11 +204,11 @@ struct migrate_vma { /* * Set to the owner value also stored in page->pgmap->owner for - * migrating out of device private memory. If set only device - * private pages with this owner are migrated. If not set - * device private pages are not migrated at all. + * migrating out of device private memory. The flags also need to + * be set to MIGRATE_VMA_SELECT_DEVICE_PRIVATE. */ - void *src_owner; + void *pgmap_owner; + unsigned long flags; }; int migrate_vma_setup(struct migrate_vma *args); |