reducing max segments expected to work?

[Benjamin LaHaise <bcrl@kvack.org>]

Hello Jens et al,

Is reducing the max number of segments in the block layer supposed to 
work (as done in the patch below), or should i be sticking to mucking 
with MAX_PHYS_SEGMENTS?  I seem to get a kernel thatt cannot boot with 
the below patch applied, and was wondering if you're aware of any 
problems in this area.  I'll probably post something more detailed 
tomorrow after trying a few things.

		-ben
-- 
"Time is what keeps everything from happening all at once." -- John Wheeler


diff -purN v2.6.12-rc4/include/linux/blkdev.h test-rc4/include/linux/blkdev.h
--- v2.6.12-rc4/include/linux/blkdev.h	2005-04-28 11:02:01.000000000 -0400
+++ test-rc4/include/linux/blkdev.h	2005-05-11 17:06:10.000000000 -0400
@@ -667,8 +667,8 @@ extern long blk_congestion_wait(int rw, 
 extern void blk_rq_bio_prep(request_queue_t *, struct request *, struct bio *);
 extern int blkdev_issue_flush(struct block_device *, sector_t *);
 
-#define MAX_PHYS_SEGMENTS 128
-#define MAX_HW_SEGMENTS 128
+#define MAX_PHYS_SEGMENTS 32
+#define MAX_HW_SEGMENTS 32
 #define MAX_SECTORS 255
 
 #define MAX_SEGMENT_SIZE	65536
-
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