diff options
Diffstat (limited to 'read-cache.c')
| -rw-r--r-- | read-cache.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/read-cache.c b/read-cache.c index 732b7fe611..fd1c88aa0f 100644 --- a/read-cache.c +++ b/read-cache.c @@ -2220,6 +2220,36 @@ static int write_shared_index(struct index_state *istate, return ret; } +static const int default_max_percent_split_change = 20; + +static int too_many_not_shared_entries(struct index_state *istate) +{ + int i, not_shared = 0; + int max_split = git_config_get_max_percent_split_change(); + + switch (max_split) { + case -1: + /* not or badly configured: use the default value */ + max_split = default_max_percent_split_change; + break; + case 0: + return 1; /* 0% means always write a new shared index */ + case 100: + return 0; /* 100% means never write a new shared index */ + default: + break; /* just use the configured value */ + } + + /* Count not shared entries */ + for (i = 0; i < istate->cache_nr; i++) { + struct cache_entry *ce = istate->cache[i]; + if (!ce->index) + not_shared++; + } + + return (int64_t)istate->cache_nr * max_split < (int64_t)not_shared * 100; +} + int write_locked_index(struct index_state *istate, struct lock_file *lock, unsigned flags) { @@ -2237,6 +2267,8 @@ int write_locked_index(struct index_state *istate, struct lock_file *lock, if ((v & 15) < 6) istate->cache_changed |= SPLIT_INDEX_ORDERED; } + if (too_many_not_shared_entries(istate)) + istate->cache_changed |= SPLIT_INDEX_ORDERED; if (istate->cache_changed & SPLIT_INDEX_ORDERED) { int ret = write_shared_index(istate, lock, flags); if (ret) |