packed_ref_store: move `packed_refs_lock` member here

Move the `packed_refs_lock` member from `files_ref_store` to
`packed_ref_store`, and rename it to `lock` since it's now more
obvious what it is locking.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/refs/files-backend.c b/refs/files-backend.c
index c4b8e2f63b862990e57bc9e78a904d7937fb2a6d..de8293493f92ae6a95850f8527461dd8cc949ad9 100644 (file)
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -62,6 +62,12 @@ struct packed_ref_store {
         * it might still be current; otherwise, NULL.
         */
        struct packed_ref_cache *cache;
+
+       /*
+        * Lock used for the "packed-refs" file. Note that this (and
+        * thus the enclosing `packed_ref_store`) must not be freed.
+        */
+       struct lock_file lock;
 };
 
 static struct packed_ref_store *packed_ref_store_create(
@@ -87,12 +93,6 @@ struct files_ref_store {
 
        struct ref_cache *loose;
 
-       /*
-        * Lock used for the "packed-refs" file. Note that this (and
-        * thus the enclosing `files_ref_store`) must not be freed.
-        */
-       struct lock_file packed_refs_lock;
-
        struct packed_ref_store *packed_ref_store;
 };
 
@@ -125,7 +125,7 @@ static void clear_packed_ref_cache(struct files_ref_store *refs)
        if (refs->packed_ref_store->cache) {
                struct packed_ref_cache *packed_refs = refs->packed_ref_store->cache;
 
-               if (is_lock_file_locked(&refs->packed_refs_lock))
+               if (is_lock_file_locked(&refs->packed_ref_store->lock))
                        die("BUG: packed-ref cache cleared while locked");
                refs->packed_ref_store->cache = NULL;
                release_packed_ref_cache(packed_refs);
@@ -416,7 +416,7 @@ static struct packed_ref_cache *get_packed_ref_cache(struct files_ref_store *ref
 {
        const char *packed_refs_file = refs->packed_ref_store->path;
 
-       if (!is_lock_file_locked(&refs->packed_refs_lock))
+       if (!is_lock_file_locked(&refs->packed_ref_store->lock))
                validate_packed_ref_cache(refs);
 
        if (!refs->packed_ref_store->cache)
@@ -447,7 +447,7 @@ static void add_packed_ref(struct files_ref_store *refs,
        struct ref_dir *packed_refs;
        struct ref_entry *packed_entry;
 
-       if (!is_lock_file_locked(&refs->packed_refs_lock))
+       if (!is_lock_file_locked(&refs->packed_ref_store->lock))
                die("BUG: packed refs not locked");
 
        if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL))
@@ -1351,7 +1351,8 @@ static int lock_packed_refs(struct files_ref_store *refs, int flags)
        }
 
        if (hold_lock_file_for_update_timeout(
-                           &refs->packed_refs_lock, refs->packed_ref_store->path,
+                           &refs->packed_ref_store->lock,
+                           refs->packed_ref_store->path,
                            flags, timeout_value) < 0)
                return -1;
 
@@ -1388,10 +1389,10 @@ static int commit_packed_refs(struct files_ref_store *refs)
 
        files_assert_main_repository(refs, "commit_packed_refs");
 
-       if (!is_lock_file_locked(&refs->packed_refs_lock))
+       if (!is_lock_file_locked(&refs->packed_ref_store->lock))
                die("BUG: packed-refs not locked");
 
-       out = fdopen_lock_file(&refs->packed_refs_lock, "w");
+       out = fdopen_lock_file(&refs->packed_ref_store->lock, "w");
        if (!out)
                die_errno("unable to fdopen packed-refs descriptor");
 
@@ -1409,7 +1410,7 @@ static int commit_packed_refs(struct files_ref_store *refs)
        if (ok != ITER_DONE)
                die("error while iterating over references");
 
-       if (commit_lock_file(&refs->packed_refs_lock)) {
+       if (commit_lock_file(&refs->packed_ref_store->lock)) {
                save_errno = errno;
                error = -1;
        }
@@ -1430,9 +1431,9 @@ static void rollback_packed_refs(struct files_ref_store *refs)
 
        files_assert_main_repository(refs, "rollback_packed_refs");
 
-       if (!is_lock_file_locked(&refs->packed_refs_lock))
+       if (!is_lock_file_locked(&refs->packed_ref_store->lock))
                die("BUG: packed-refs not locked");
-       rollback_lock_file(&refs->packed_refs_lock);
+       rollback_lock_file(&refs->packed_ref_store->lock);
        release_packed_ref_cache(packed_ref_cache);
        clear_packed_ref_cache(refs);
 }