patch-2.1.17 linux/fs/buffer.c

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diff -u --recursive --new-file v2.1.16/linux/fs/buffer.c linux/fs/buffer.c
@@ -1907,7 +1907,7 @@
 {
 	int i;
 	int isize = BUFSIZE_INDEX(BLOCK_SIZE);
-	long memsize = max_mapnr << PAGE_SHIFT;
+	long memsize = num_physpages << PAGE_SHIFT;
 
 	if (memsize >= 64*1024*1024)
 		nr_hash = 65521;

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