Fix raid5 on sparc

Hi,

On sparc the length of an xor block must be a multiple of 128 bytes. Bad things happen otherwise.

Anton

Index: xor.c
===================================================================
RCS file: /cvs/linux/drivers/md/xor.c,v
retrieving revision 1.3

diff -u -r1.3 xor.c
@@ -58,7 +58,11 @@
 static struct xor_block_template *template_list;
 
 /* The -6*32 shift factor colors the cache.  */
+#ifdef __sparc__
+#define BENCH_SIZE (PAGE_SIZE)
+#else
 #define BENCH_SIZE (PAGE_SIZE-6*32)
+#endif
 
 static void
 do_xor_speed(struct xor_block_template *tmpl, void *b1, void *b2)

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