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Subjectreducing max segments expected to work?
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.

"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_HW_SEGMENTS 32
#define MAX_SECTORS 255

#define MAX_SEGMENT_SIZE 65536
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