Ed Lin wrote:
> I think the tcq is good after reading the related kernel code. But driver
> still need to keep track of the tag for eh and flush. Maybe the driver
> can use find_first_zero_bit(), __set_bit(), and __test_and_clear_bit(),
> because this is what the block layer uses for tag operations.
Once mapped by the block layer, the tag should be accessible via struct
request::tag variable for the lifetime of the struct request.
Jeff
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