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| author | Christoph Hellwig <hch@lst.de> | 2022-02-16 15:31:37 +1100 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-03-03 12:47:33 -0500 |
| commit | aaf7d70cc595c78d27e915451e93a4459cfc36f3 (patch) | |
| tree | 5b612e9fcb3f8708a76e586a96abcfba6d757389 /mm/migrate.c | |
| parent | 1776c0d102482d4aeccd56e404285bc47a481be8 (diff) | |
| download | linux-aaf7d70cc595c78d27e915451e93a4459cfc36f3.tar.gz linux-aaf7d70cc595c78d27e915451e93a4459cfc36f3.tar.bz2 linux-aaf7d70cc595c78d27e915451e93a4459cfc36f3.zip | |
mm: refactor the ZONE_DEVICE handling in migrate_vma_pages
Make the flow a little more clear and prepare for adding a new
ZONE_DEVICE memory type.
Link: https://lkml.kernel.org/r/20220210072828.2930359-13-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alistair Popple <apopple@nvidia.com>
Tested-by: "Sierra Guiza, Alejandro (Alex)" <alex.sierra@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Chaitanya Kulkarni <kch@nvidia.com>
Cc: Christian Knig <christian.koenig@amd.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Felix Kuehling <Felix.Kuehling@amd.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Karol Herbst <kherbst@redhat.com>
Cc: Logan Gunthorpe <logang@deltatee.com>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 27 |
1 files changed, 12 insertions, 15 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 4246dca6c469..7dffd5f82a60 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -2792,24 +2792,21 @@ 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); |