linux-kernel - Re: A desktop environment[1] kernel wishlist

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Date:	Fri, 31 Oct 2014 10:36:18 +0100
From:	Jan Kara <jack@...e.cz>
To:	"Sergey \"Shnatsel\" Davidoff" <sergey@...mentaryos.org>
Cc:	Pavel Machek <pavel@....cz>, linux-kernel@...r.kernel.org
Subject: Re: A desktop environment[1] kernel wishlist

On Mon 27-10-14 20:02:51, Sergey "Shnatsel" Davidoff wrote:
> > If "recursive mtime" was available, would that work for you?
> 
> It would work for detecting "offline" changes. I suppose recursive
> mtime not viable for online monitoring, mostly because detecting file
> renaming would be a massive PITA (and we already have fanotify with
> exactly this problem).
  Yes, you'll get only "something has changed in a subtree" information for
each directory. You'd then have to rescan the directory to find out what
has changed. But there's no simple solution for this - either you have to
process tons of events for busy directory tree or you have to somehow
reduce the amount of information provided to userspace...

								Honza
-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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