About dd & make

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* About dd & make_request
@ 2003-03-07 14:05 Subodh S
  2003-03-07 15:08 ` Jens Axboe
  0 siblings, 1 reply; 2+ messages in thread
From: Subodh S @ 2003-03-07 14:05 UTC (permalink / raw)
  To: linux-kernel; +Cc: linux-scsi

Hi,

When run

dd if=/dev/mydevice of=/dev/null count=10

why does my make_request function get called only five times ??


Thanks and Regards,
Subodh
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^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: About dd & make_request
  2003-03-07 14:05 About dd & make_request Subodh S
@ 2003-03-07 15:08 ` Jens Axboe
  0 siblings, 0 replies; 2+ messages in thread
From: Jens Axboe @ 2003-03-07 15:08 UTC (permalink / raw)
  To: Subodh S; +Cc: linux-kernel, linux-scsi

On Fri, Mar 07 2003, Subodh S wrote:
> Hi,
> 
> When run
> 
> dd if=/dev/mydevice of=/dev/null count=10
> 
> why does my make_request function get called only five times ??

because you didn't change the block size, so you got 5 1024b (default)
buffers thrown at you?

-- 
Jens Axboe


^ permalink raw reply	[flat|nested] 2+ messages in thread

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