Now that we keep track of the packed-refs file metadata, we can detect
when the packed-refs file has been modified since we last read it, and
we do so automatically every time that get_packed_ref_cache() is
called. So there is no need to invalidate the cache automatically
when lock_packed_refs() is called; usually the old copy will still be
valid.
Signed-off-by: Michael Haggerty <mhag...@alum.mit.edu>
---
refs.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/refs.c b/refs.c
index 350054c..4b989b0 100644
--- a/refs.c
+++ b/refs.c
@@ -2133,11 +2133,14 @@ int lock_packed_refs(struct lock_file *lock, int flags)
{
struct packed_ref_cache *packed_ref_cache;
- /* Discard the old cache because it might be invalid: */
- clear_packed_ref_cache(&ref_cache);
if (hold_lock_file_for_update(lock, git_path("packed-refs"), flags) < 0)
return -1;
- /* Read the current packed-refs while holding the lock: */
+ /*
+ * Get the current packed-refs while holding the lock. If the
+ * packed-refs file has been modified since we last read it,
+ * this will automatically invalidate the cache and re-read
+ * the packed-refs file.
+ */
packed_ref_cache = get_packed_ref_cache(&ref_cache);
packed_ref_cache->lock = lock;
/* Increment the reference count to prevent it from being freed: */
--
1.8.3.1
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