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authormav <mav@FreeBSD.org>2016-05-03 08:00:54 +0000
committermav <mav@FreeBSD.org>2016-05-03 08:00:54 +0000
commit4031b92c418bc96fd499c3393e0cac3e2fe2cd7d (patch)
treeab26adcb5a44fee97c4ac983919aad1f7e38684c /contrib/file/src/dprintf.c
parent2cdcbd6f1891984552e2bd1f52e55016107936a7 (diff)
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MFC r297858: Allocate separate DMA area for synchronous IOCB execution.
Usually IOCBs should be put on queue for asynchronous processing and should not require additional DMA memory. But there are some cases like aborts and resets that for external reasons has to be synchronous. Give those cases separate 2*64 byte DMA area to decouple them from other DMA scratch area users, using it for asynchronous requests.
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