D4686: changegroup: reintroduce some comments that have gotten lost over the years
durin42 (Augie Fackler)
phabricator at mercurial-scm.org
Thu Sep 20 15:44:56 EDT 2018
This revision was automatically updated to reflect the committed changes.
Closed by commit rHG5adc5fe41a7d: changegroup: reintroduce some comments that have gotten lost over the years (authored by durin42, committed by ).
REPOSITORY
rHG Mercurial
CHANGES SINCE LAST UPDATE
https://phab.mercurial-scm.org/D4686?vs=11226&id=11237
REVISION DETAIL
https://phab.mercurial-scm.org/D4686
AFFECTED FILES
mercurial/changegroup.py
CHANGE DETAILS
diff --git a/mercurial/changegroup.py b/mercurial/changegroup.py
--- a/mercurial/changegroup.py
+++ b/mercurial/changegroup.py
@@ -1071,8 +1071,14 @@
store = mfl.getstorage(tree)
if not self._filematcher.visitdir(store.tree[:-1] or '.'):
+ # No nodes to send because this directory is out of
+ # the client's view of the repository (probably
+ # because of narrow clones).
prunednodes = []
else:
+ # Avoid sending any manifest nodes we can prove the
+ # client already has by checking linkrevs. See the
+ # related comment in generatefiles().
prunednodes = self._prunemanifests(store, nodes, commonrevs)
if tree and not prunednodes:
continue
@@ -1164,6 +1170,10 @@
return linkrevnodes[x]
frev, flr = filerevlog.rev, filerevlog.linkrev
+ # Skip sending any filenode we know the client already
+ # has. This avoids over-sending files relatively
+ # inexpensively, so it's not a problem if we under-filter
+ # here.
filenodes = [n for n in linkrevnodes
if flr(frev(n)) not in commonrevs]
To: durin42, #hg-reviewers
Cc: mercurial-devel
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