Merge branch 'jc/index-update-if-able' into maint

* jc/index-update-if-able:
  update $GIT_INDEX_FILE when there are racily clean entries
  diff/status: refactor opportunistic index update

diff --git a/builtin/commit.c b/builtin/commit.c
index d71e1e0c9c27c4d03cd02b4deaacec67af33917a..6e32166a297d2e8783e9a24dee6398bb0aa28e98 100644 (file)
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -1131,13 +1131,8 @@ int cmd_status(int argc, const char **argv, const char *prefix)
        refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, s.pathspec, NULL, NULL);
 
        fd = hold_locked_index(&index_lock, 0);
-       if (0 <= fd) {
-               if (active_cache_changed &&
-                   !write_cache(fd, active_cache, active_nr))
-                       commit_locked_index(&index_lock);
-               else
-                       rollback_lock_file(&index_lock);
-       }
+       if (0 <= fd)
+               update_index_if_able(&the_index, &index_lock);
 
        s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;
        s.in_merge = in_merge;

diff --git a/builtin/diff.c b/builtin/diff.c
index 42822cd5374dbcf0e63c17078a55284c432ddc77..d4d80c982e99f9a16e4e5228a963d1f2f1836bfb 100644 (file)
--- a/builtin/diff.c
+++ b/builtin/diff.c
@@ -197,12 +197,7 @@ static void refresh_index_quietly(void)
        discard_cache();
        read_cache();
        refresh_cache(REFRESH_QUIET|REFRESH_UNMERGED);
-
-       if (active_cache_changed &&
-           !write_cache(fd, active_cache, active_nr))
-               commit_locked_index(lock_file);
-
-       rollback_lock_file(lock_file);
+       update_index_if_able(&the_index, lock_file);
 }
 
 static int builtin_diff_files(struct rev_info *revs, int argc, const char **argv)

diff --git a/cache.h b/cache.h
index 50de992c5c1d51fe6ad50c40c152bd63f84869d0..342b4100f12d5a56262a13290c27298431e82325 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -527,6 +527,7 @@ extern NORETURN void unable_to_lock_index_die(const char *path, int err);
 extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
 extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
 extern int commit_lock_file(struct lock_file *);
+extern void update_index_if_able(struct index_state *, struct lock_file *);
 
 extern int hold_locked_index(struct lock_file *, int);
 extern int commit_locked_index(struct lock_file *);

diff --git a/read-cache.c b/read-cache.c
index 4f2e890b01b0c27ef2e49080e1fd34bf67e969c7..0480d9455cec042cf128e4d92bbc44a9dcc3fe32 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -1568,6 +1568,31 @@ static int ce_write_entry(git_SHA_CTX *c, int fd, struct cache_entry *ce)
        return result;
 }
 
+static int has_racy_timestamp(struct index_state *istate)
+{
+       int entries = istate->cache_nr;
+       int i;
+
+       for (i = 0; i < entries; i++) {
+               struct cache_entry *ce = istate->cache[i];
+               if (is_racy_timestamp(istate, ce))
+                       return 1;
+       }
+       return 0;
+}
+
+/*
+ * Opportunisticly update the index but do not complain if we can't
+ */
+void update_index_if_able(struct index_state *istate, struct lock_file *lockfile)
+{
+       if ((istate->cache_changed || has_racy_timestamp(istate)) &&
+           !write_index(istate, lockfile->fd))
+               commit_locked_index(lockfile);
+       else
+               rollback_lock_file(lockfile);
+}
+
 int write_index(struct index_state *istate, int newfd)
 {
        git_SHA_CTX c;