On Feb 9, 2007, at 10:25 AM, Fajun Chen wrote:
I'm not aware of any NV cache (vista feature documented in ata-atapi-8) support in libata. Is this supported or any plan to support it in the future?
It is already supported through the HDIO_DRIVE_CMD ioctl - pass 0xb6 as the command register value.
I think the interesting question is, how can we leverage the NV Cache in the block and file system layers to improve power and performance. One probably obvious option is to enter NV Cache Power Mode when laptop mode is enabled.
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