Subject: Re: [PATCH/WIP v2 02/14] read-cache: new extension to mark what file is watched

From: Thomas Rast <[email-masked]>
Date: Sun, 19 Jan 2014 18:06:16 +0100

Nguyễn Thái Ngọc Duy <[email-masked]> writes:

> If an entry is "watched", git lets an external program decide if the
> entry is modified or not. It's more like --assume-unchanged, but
> designed to be controlled by machine.
>
> We are running out of on-disk ce_flags, so instead of extending
> on-disk entry format again, "watched" flags are in-core only and
> stored as extension instead.

I wonder if this would be a good use-case for EWAH bitmaps?  Presumably
most users would end up having only a few large ranges of files that are
being watched.  Quite possibly most users would watch *all* files.

-- 
Thomas Rast
[email-masked]