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-rw-r--r--mm/memory_hotplug.c33
1 files changed, 32 insertions, 1 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index dfc0a6134c7c..7d0797475a47 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1014,11 +1014,42 @@ int offline_pages(unsigned long start_pfn, unsigned long nr_pages)
int remove_memory(u64 start, u64 size)
{
+ struct memory_block *mem = NULL;
+ struct mem_section *section;
unsigned long start_pfn, end_pfn;
+ unsigned long pfn, section_nr;
+ int ret;
start_pfn = PFN_DOWN(start);
end_pfn = start_pfn + PFN_DOWN(size);
- return __offline_pages(start_pfn, end_pfn, 120 * HZ);
+
+ for (pfn = start_pfn; pfn < end_pfn; pfn += PAGES_PER_SECTION) {
+ section_nr = pfn_to_section_nr(pfn);
+ if (!present_section_nr(section_nr))
+ continue;
+
+ section = __nr_to_section(section_nr);
+ /* same memblock? */
+ if (mem)
+ if ((section_nr >= mem->start_section_nr) &&
+ (section_nr <= mem->end_section_nr))
+ continue;
+
+ mem = find_memory_block_hinted(section, mem);
+ if (!mem)
+ continue;
+
+ ret = offline_memory_block(mem);
+ if (ret) {
+ kobject_put(&mem->dev.kobj);
+ return ret;
+ }
+ }
+
+ if (mem)
+ kobject_put(&mem->dev.kobj);
+
+ return 0;
}
#else
int offline_pages(unsigned long start_pfn, unsigned long nr_pages)