write_ref_sha1() previously skipped the write if the reference already
had the desired value, unless lock->force_write was set. Instead,
perform that test at the callers.
Two of the callers (in rename_ref()) unconditionally set force_write
just before calling write_ref_sha1(), so they don't need the extra
check at all. Nor do they need to set force_write anymore.
The last caller, in ref_transaction_commit(), still needs the test.
Signed-off-by: Michael Haggerty <mhag...@alum.mit.edu>
---
refs.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/refs.c b/refs.c
index e82d503..dd30bfa 100644
--- a/refs.c
+++ b/refs.c
@@ -2877,7 +2877,6 @@ int rename_ref(const char *oldrefname, const char
*newrefname, const char *logms
error("unable to lock %s for update", newrefname);
goto rollback;
}
- lock->force_write = 1;
hashcpy(lock->old_sha1, orig_sha1);
if (write_ref_sha1(lock, orig_sha1, logmsg)) {
error("unable to write current sha1 into %s", newrefname);
@@ -2893,7 +2892,6 @@ int rename_ref(const char *oldrefname, const char
*newrefname, const char *logms
goto rollbacklog;
}
- lock->force_write = 1;
flag = log_all_ref_updates;
log_all_ref_updates = 0;
if (write_ref_sha1(lock, orig_sha1, NULL))
@@ -3079,10 +3077,6 @@ static int write_ref_sha1(struct ref_lock *lock,
static char term = '\n';
struct object *o;
- if (!lock->force_write && !hashcmp(lock->old_sha1, sha1)) {
- unlock_ref(lock);
- return 0;
- }
o = parse_object(sha1);
if (!o) {
error("Trying to write ref %s with nonexistent object %s",
@@ -3796,15 +3790,21 @@ int ref_transaction_commit(struct ref_transaction
*transaction,
struct ref_update *update = updates[i];
if (!is_null_sha1(update->new_sha1)) {
- if (write_ref_sha1(update->lock, update->new_sha1,
- update->msg)) {
+ if (!update->lock->force_write &&
+ !hashcmp(update->lock->old_sha1, update->new_sha1))
{
+ unlock_ref(update->lock);
+ update->lock = NULL;
+ } else if (write_ref_sha1(update->lock,
update->new_sha1,
+ update->msg)) {
update->lock = NULL; /* freed by write_ref_sha1
*/
strbuf_addf(err, "Cannot update the ref '%s'.",
update->refname);
ret = TRANSACTION_GENERIC_ERROR;
goto cleanup;
+ } else {
+ /* freed by write_ref_sha1(): */
+ update->lock = NULL;
}
- update->lock = NULL; /* freed by write_ref_sha1 */
}
}
--
2.1.4
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