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Commit 15dd1c9f authored by Hank Janssen's avatar Hank Janssen Committed by Greg Kroah-Hartman
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staging: hv: Increased storvsc ringbuffer and max_io_requests 



Increased storvsc ringbuffer and max_io_requests. This now more
closely mimics the numbers on Hyper-V. And will allow more IO requests
to take place for the SCSI driver.

Max_IO is set to double from what it was before, Hyper-V allows it and
we have had appliance builder requests to see if it was a problem to
increase the number.

Ringbuffer size for storvsc is now increased because I have seen A few buffer
problems on extremely busy systems. They were Set pretty low before.
And since max_io_requests is increased I Really needed to increase the buffer
as well.


Signed-off-by: default avatarHank Janssen <hjanssen@microsoft.com>
Signed-off-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
Cc: stable <stable@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent e5fa721d

drivers/staging/hv/storvsc_api.h

+2 −2
Original line number Diff line number Diff line
@@ -28,10 +28,10 @@ 
#include "vmbus_api.h"



/* Defines */

#define STORVSC_RING_BUFFER_SIZE			(10*PAGE_SIZE)

#define STORVSC_RING_BUFFER_SIZE			(20*PAGE_SIZE)

#define BLKVSC_RING_BUFFER_SIZE				(20*PAGE_SIZE)



#define STORVSC_MAX_IO_REQUESTS				64

#define STORVSC_MAX_IO_REQUESTS				128



/*

 * In Hyper-V, each port/path/target maps to 1 scsi host adapter.  In