diff options
| 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 | 5cbf9942c9630f82bd71dfac141e6c1b511a9460 (patch) | |
| tree | d6d784a2792fc0fa606ac45e3dcfde47ee0702fa /mm/memremap.c | |
| parent | fsdax: depend on ZONE_DEVICE || FS_DAX_LIMITED (diff) | |
| download | wireguard-linux-5cbf9942c9630f82bd71dfac141e6c1b511a9460.tar.xz wireguard-linux-5cbf9942c9630f82bd71dfac141e6c1b511a9460.zip | |
mm: generalize the pgmap based page_free infrastructure
Key off on the existence of ->page_free to prepare for adding support for
more pgmap types that are device managed and thus need the free callback.
Link: https://lkml.kernel.org/r/20220210072828.2930359-10-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: "Sierra Guiza, Alejandro (Alex)" <alex.sierra@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Alistair Popple <apopple@nvidia.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/memremap.c')
| -rw-r--r-- | mm/memremap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/memremap.c b/mm/memremap.c index fef5734d5e49..e00ffcdba7b6 100644 --- a/mm/memremap.c +++ b/mm/memremap.c @@ -452,7 +452,7 @@ EXPORT_SYMBOL_GPL(get_dev_pagemap); void free_zone_device_page(struct page *page) { - if (WARN_ON_ONCE(!is_device_private_page(page))) + if (WARN_ON_ONCE(!page->pgmap->ops || !page->pgmap->ops->page_free)) return; __ClearPageWaiters(page); @@ -460,7 +460,7 @@ void free_zone_device_page(struct page *page) mem_cgroup_uncharge(page_folio(page)); /* - * When a device_private page is freed, the page->mapping field + * When a device managed page is freed, the page->mapping field * may still contain a (stale) mapping value. For example, the * lower bits of page->mapping may still identify the page as an * anonymous page. Ultimately, this entire field is just stale |