Re: [SCSI] Set max_phys_segments to sg_tablesize

[mika.penttila]

> Many SCSI host drivers assume that use_sg will be <= sg_tablesize.
> Hence they may break under 2.6 as the number of physical segments
> is not limited by sg_tablesize.  This patch fixes that.
> 

Physical segments don't matter,  hw segments does and it's bounded by sg_tablesize.

--Mika

Index: kernel-source-2.5/drivers/scsi/scsi_lib.c
===================================================================
RCS file: /home/gondolin/herbert/src/CVS/debian/kernel-source-2.5/drivers/scsi/scsi_lib.c,v
retrieving revision 1.1.1.16
diff -u -r1.1.1.16 scsi_lib.c
--- kernel-source-2.5/drivers/scsi/scsi_lib.c	28 Sep 2003 04:44:15 -0000	1.1.1.16
+++ kernel-source-2.5/drivers/scsi/scsi_lib.c	15 Oct 2003 11:32:20 -0000
@@ -1243,7 +1243,7 @@
 	blk_queue_prep_rq(q, scsi_prep_fn);
 
 	blk_queue_max_hw_segments(q, shost->sg_tablesize);
-	blk_queue_max_phys_segments(q, MAX_PHYS_SEGMENTS);
+	blk_queue_max_phys_segments(q, shost->sg_tablesize);
 	blk_queue_max_sectors(q, shost->max_sectors);
 	blk_queue_bounce_limit(q, scsi_calculate_bounce_limit(shost));
 	blk_queue_segment_boundary(q, shost->dma_boundary);