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[PATCH] Re-instate index file write optimization 

This makes "git-update-index" avoid the new index file write if it didn't
make any changes to the index.

It still doesn't make things like "git status" be read-only operations in
general, but if the index file doesn't need refreshing, it now will at
least avoid making unnecessary changes.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Linus Torvalds 2005-10-01 13:39:47 -07:00 committed by Junio C Hamano
parent 5d1a5c02e8
commit 5cd5ace72b
1 changed files with 5 additions and 3 deletions
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8
update-index.c
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@ -391,9 +391,11 @@ int main(int argc, const char **argv)
update_one(buf.buf, prefix, prefix_length);
}
}
if (write_cache(newfd, active_cache, active_nr) ||
commit_index_file(&cache_file))
die("Unable to write new cachefile");
if (active_cache_changed) {
if (write_cache(newfd, active_cache, active_nr) ||
commit_index_file(&cache_file))
die("Unable to write new cachefile");
}
return has_errors ? 1 : 0;
}