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Subject[RFC PATCH 2/4] mm/hotplug: Expose is_mem_section_removable() and offline_pages()
Date
From: Tianyu Lan <Tianyu.Lan@microsoft.com>

Hyper-V driver adds memory hot remove function and will use
these interfaces in Hyper-V balloon driver which may be built
as a module. Expose these function.

Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
---
mm/memory_hotplug.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 07e5c67f48a8..4b358ebcc3d7 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1191,6 +1191,7 @@ bool is_mem_section_removable(unsigned long start_pfn, unsigned long nr_pages)
/* All pageblocks in the memory block are likely to be hot-removable */
return true;
}
+EXPORT_SYMBOL_GPL(is_mem_section_removable);

/*
* Confirm all pages in a range [start, end) belong to the same zone.
@@ -1612,6 +1613,7 @@ int offline_pages(unsigned long start_pfn, unsigned long nr_pages)
{
return __offline_pages(start_pfn, start_pfn + nr_pages);
}
+EXPORT_SYMBOL_GPL(offline_pages);

static int check_memblock_offlined_cb(struct memory_block *mem, void *arg)
{
--
2.14.5
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