patch-2.4.0-test6 linux/include/linux/pagemap.h

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diff -u --recursive --new-file v2.4.0-test5/linux/include/linux/pagemap.h linux/include/linux/pagemap.h
@@ -36,7 +36,7 @@
 /*
  * From a kernel address, get the "struct page *"
  */
-#define page_cache_entry(x)	(mem_map + MAP_NR(x))
+#define page_cache_entry(x)	virt_to_page(x)
 
 extern unsigned int page_hash_bits;
 #define PAGE_HASH_BITS (page_hash_bits)

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