[PATCH 4/5] receive-pack.c: add receive.atomicpush configuration option

[Ronnie Sahlberg <sahlberg@google.com>]

Add a configuration argument to the receive side to force atomic pushes
for all pushes to the repo.

Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
---
 Documentation/config.txt | 5 +++++
 builtin/receive-pack.c   | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 1d718bd..75ce157 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -2038,6 +2038,11 @@ rebase.autostash::
 	successful rebase might result in non-trivial conflicts.
 	Defaults to false.
 
+receive.atomicpush::
+	By default, git-receive-pack will only use atomic ref transactions
+	if the client negotiates it. When set to true, git-receive-pack
+	will force atomic ref updates for all client pushes.
+
 receive.autogc::
 	By default, git-receive-pack will run "git-gc --auto" after
 	receiving data from git-push and updating refs.  You can stop
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 47f778d..9fa637a 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -132,6 +132,11 @@ static int receive_pack_config(const char *var, const char *value, void *cb)
 		return 0;
 	}
 
+	if (strcmp(var, "receive.atomicpush") == 0) {
+		use_atomic_push = git_config_bool(var, value);
+		return 0;
+	}
+
 	return git_default_config(var, value, cb);
 }
 
-- 
2.0.1.556.ge8f7cba.dirty