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mm: pass the vmem_altmap to arch_add_memory and __add_pages

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We can just pass this on instead of having to do a radix tree lookup
without proper locking 2 levels into the callchain.

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
This commit is contained in:
Christoph Hellwig 2017-12-29 08:53:53 +01:00 • committed by Dan Williams
commit 24e6d5a59a
10 changed files with 39 additions and 29 deletions
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3
kernel/memremap.c
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@ -382,6 +382,7 @@ void *devm_memremap_pages(struct device *dev, struct resource *res,
if (altmap) {
memcpy(&page_map->altmap, altmap, sizeof(*altmap));
pgmap->altmap = &page_map->altmap;
altmap = pgmap->altmap;
}
pgmap->ref = ref;
pgmap->res = &page_map->res;
@ -427,7 +428,7 @@ void *devm_memremap_pages(struct device *dev, struct resource *res,
goto err_pfn_remap;
mem_hotplug_begin();
error = arch_add_memory(nid, align_start, align_size, false);
error = arch_add_memory(nid, align_start, align_size, altmap, false);
if (!error)
move_pfn_range_to_zone(&NODE_DATA(nid)->node_zones[ZONE_DEVICE],
align_start >> PAGE_SHIFT,