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authorChristoph Hellwig <hch@lst.de>2022-02-16 15:31:37 +1100
committerMatthew Wilcox (Oracle) <willy@infradead.org>2022-03-03 12:47:33 -0500
commit5cbf9942c9630f82bd71dfac141e6c1b511a9460 (patch)
treed6d784a2792fc0fa606ac45e3dcfde47ee0702fa /mm/memremap.c
parentf74515986e63516e81f6656e974ba6eb69ba7f19 (diff)
downloadlinux-5cbf9942c9630f82bd71dfac141e6c1b511a9460.tar.bz2
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.c4
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