read-cache: try index data from shared memory
fixup! Add read-cache--daemon for caching index and related stuff
fixup! Add read-cache--daemon for caching index and related stuff
fixup! Add read-cache--daemon for caching index and related stuff
1
read-cache--daemon: do not read index from shared memory

It does not hurt doing that. But it does not help anybody either.
read-cache: skip verifying trailing SHA-1 on cached index

The daemon is responsible for verifying the index before putting it in
the shared memory. No need to redo it again.
read-cache: inform the daemon that the index has been updated

The daemon would immediately load the new index in memory in
background. Next time Git needs to read the index again, everything is
ready.