Sped up query commands that read the git-annex branch by around 5%
The only price paid is one additional MVar read per write to the journal. Presumably writing a journal file dominiates over a MVar read time by several orders of magnitude. --batch does not get the speedup because then it needs to notice when another process has made a change. Also made the assistant and other damon modes bypass the optimisation, which would not help them anyway.
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@ -30,7 +30,7 @@ seek bs = do
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mergeAnnexBranch :: CommandStart
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mergeAnnexBranch = starting "merge" (ActionItemOther (Just "git-annex")) $ do
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Annex.Branch.update
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_ <- Annex.Branch.update
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-- commit explicitly, in case no remote branches were merged
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Annex.Branch.commit =<< Annex.Branch.commitMessage
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next $ return True
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