add -e: do not show difference in a submodule that is merely dirty

[git.git] / builtin / pack-objects.c

diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 8981dd60669b14ed25449b6afde9a1526bb813c0..8bfe3a6ffb11fb2fc0956043dfafc2f3f66adccf 100644 (file)
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -126,7 +126,7 @@ static void *get_delta(struct object_entry *entry)
 
 static unsigned long do_compress(void **pptr, unsigned long size)
 {
-       z_stream stream;
+       git_zstream stream;
        void *in, *out;
        unsigned long maxsize;
 
@@ -160,7 +160,7 @@ static int check_pack_inflate(struct packed_git *p,
                off_t len,
                unsigned long expect)
 {
-       z_stream stream;
+       git_zstream stream;
        unsigned char fakebuf[4096], *in;
        int st;
 
@@ -187,12 +187,12 @@ static void copy_pack_data(struct sha1file *f,
                off_t len)
 {
        unsigned char *in;
-       unsigned int avail;
+       unsigned long avail;
 
        while (len) {
                in = use_pack(p, w_curs, offset, &avail);
                if (avail > len)
-                       avail = (unsigned int)len;
+                       avail = (unsigned long)len;
                sha1write(f, in, avail);
                offset += avail;
                len -= avail;
@@ -994,7 +994,7 @@ static void check_object(struct object_entry *entry)
                const unsigned char *base_ref = NULL;
                struct object_entry *base_entry;
                unsigned long used, used_0;
-               unsigned int avail;
+               unsigned long avail;
                off_t ofs;
                unsigned char *buf, c;
 
@@ -1248,11 +1248,16 @@ static int try_delta(struct unpacked *trg, struct unpacked *src,
                return -1;
 
        /*
-        * We do not bother to try a delta that we discarded
-        * on an earlier try, but only when reusing delta data.
+        * We do not bother to try a delta that we discarded on an
+        * earlier try, but only when reusing delta data.  Note that
+        * src_entry that is marked as the preferred_base should always
+        * be considered, as even if we produce a suboptimal delta against
+        * it, we will still save the transfer cost, as we already know
+        * the other side has it and we won't send src_entry at all.
         */
        if (reuse_delta && trg_entry->in_pack &&
            trg_entry->in_pack == src_entry->in_pack &&
+           !src_entry->preferred_base &&
            trg_entry->in_pack_type != OBJ_REF_DELTA &&
            trg_entry->in_pack_type != OBJ_OFS_DELTA)
                return 0;