ibmvscsi: driver enablement for CMO

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Enable the driver to function in a Cooperative Memory Overcommitment (CMO)
environment.

The following changes are made to enable the driver for CMO:
 * DMA mapping errors will not result in error messages if entitlement has
   been exceeded and resources were not available.
 * The driver has a get_desired_dma function defined to function
   in a CMO environment. It will indicate how much IO memory it would like
   to function.

Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Acked by: Brian King <brking@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

...

This commit is contained in:

Robert Jennings 2008-07-24 04:35:27 +10:00 • committed by Benjamin Herrenschmidt

parent 1096d63d8e

commit 7912a0ac59

2 changed files with 40 additions and 7 deletions

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45

drivers/scsi/ibmvscsi/ibmvscsi.c

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2

drivers/scsi/ibmvscsi/ibmvscsi.h

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