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authorDan Williams <dan.j.williams@intel.com>2010-05-01 15:22:56 -0700
committerDan Williams <dan.j.williams@intel.com>2010-05-01 15:22:56 -0700
commit2adfc550b6d9646301c810643bc309fa49375987 (patch)
tree1e1fe80772dc588be2dc294d8b9f371caec3f0b0 /Documentation/cpuidle
parent074cc47679f8b0931d7d5384e95822d82768f149 (diff)
ioat3: disable cacheline-unaligned transfers for raid operations
There are cases where cacheline-unaligned raid operations can hang the dma channel. Simply disable these operations by increasing the alignment constraints published to async_tx. The raid456 driver always issues page aligned requests, so the only in-kernel user of the ioatdma driver that is affected by this change is dmatest. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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