Messages in this thread | | | Date | Mon, 21 Nov 2022 08:13:05 +0100 | From | Christoph Hellwig <> | Subject | Re: [RFC PATCH 0/2] elevator: restore old io scheduler on failure in elevator_switch |
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On Fri, Nov 18, 2022 at 08:09:52PM +0800, Jinlong Chen wrote: > elevator_switch contains the fallback logic in sq era, but it was removed > when moving to mq (commit: a1ce35fa49852db60fc6e268038530be533c5b15), > leaving the document mismatched with the behavior. As far as I can see, > restoring the old io scheduler is more reasonable than just leaving the > scheduler none, hence there is the series.
What failure scenariou can you think off where switching to the intended schedule fails, but switching back to the previous one will succeed?
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