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-rw-r--r--include/linux/mmzone.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index c382849..aad9800 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -896,6 +896,7 @@ static inline struct mem_section *__nr_to_section(unsigned long nr)
return &mem_section[SECTION_NR_TO_ROOT(nr)][nr & SECTION_ROOT_MASK];
}
extern int __section_nr(struct mem_section* ms);
+extern unsigned long usemap_size(void);
/*
* We use the lower bits of the mem_map pointer to store
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