On 2.4 the use_sg value should be limited to the smaller of MAX_SEGMENTS
or the scsi host sg_tablesize.
This is checked in the block interface during __make_request. I believe if
you got through the sg interface the limiting value is only sg_tablesize,
but Doug is the best one to answer that.
-Mike
Haofeng Kou [haofengk@xxxxxxxxxxxxxxx] wrote:
> For the "struct scsi_cmnd", there is a member :
> unsigned short use_sg;
> Which gives the Number of pieces of the scatter-gather.
>
> How to limit its value, how to set the max value for the "use_sg"?
>
>
> Thanks,
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--
Michael Anderson
andmike@xxxxxxxxxx
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