On Fri, May 12, 2023 at 09:43:32AM -0600, Jens Axboe wrote: > We really have two types of passthrough - normal kind of IO, and > potential error recovery etc IO. The former can plug just fine, and I > don't think we should treat it differently. Might make more sense to > just bypass plugging for error handling type of IO, or pt that doesn't > transfer any data to avoid having a NULL bio inserted into the > scheduler. I'd suggest we distinguish by ... having a plug or not. Anything internal like EH or probing should never come from a context with a plug.
