tags-cache: directly perform a monimal walk for hgtagsfnodescache warming We do something narrower than the path retrieving data. So lets use dedicated code instead. This provides further useful speedup: ### data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog # benchmark.name = hg.debug.debug-update-cache # bin-env-vars.hg.flavor = default # bin-env-vars.hg.py-re2-module = default # benchmark.variants.pre-state = warm before-this-series: 19.947581 skip-fnode-filter: 18.916804 (-5.17%, -1.03) use-rev-num: 17.493725 (-12.30%, -2.45) this-changesets: 15.919466 (-20.19%, -4.03)

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Same with share-safe

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  $ echo "[format]"         >> $HGRCPATH

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  $ echo "use-share-safe = True" >> $HGRCPATH

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  $ cd $TESTTMP

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  $ hg init myrepo

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  $ cd myrepo

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  $ cat > .hg/hgrc <<EOF

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  > [extensions]

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  > sparse=

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  > EOF

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  $ echo a > show

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  $ echo x > hide

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  $ hg ci -Aqm 'initial'

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Regression test: checks that this command correctly locks the store

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before updating the store [requirements] config.

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  $ hg up -q 0

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  $ hg debugsparse --include 'hide'