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async_tx: add sum check flags

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Replace the flat zero_sum_result with a collection of flags to contain
the P (xor) zero-sum result, and the soon to be utilized Q (raid6 reed
solomon syndrome) zero-sum result.  Use the SUM_CHECK_ namespace instead
of DMA_ since these flags will be used on non-dma-zero-sum enabled
platforms.

Reviewed-by: Andre Noll <maan@systemlinux.org>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams
2009-08-29 19:09:26 -07:00
parent d6f38f31f3
commit ad283ea4a3
7 changed files with 37 additions and 14 deletions
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5
drivers/md/raid5.h
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@ -2,6 +2,7 @@
#define _RAID5_H
#include <linux/raid/xor.h>
#include <linux/dmaengine.h>
/*
*
@ -215,8 +216,8 @@ struct stripe_head {
* @target - STRIPE_OP_COMPUTE_BLK target
*/
struct stripe_operations {
int target;
u32 zero_sum_result;
int target;
enum sum_check_flags zero_sum_result;
} ops;
struct r5dev {
struct bio req;