linux-kernel - Re: [PATCH vfs 1/2] lib: implement ptrset

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Message-ID: <20141202181551.GJ10918@htj.dyndns.org>
Date:	Tue, 2 Dec 2014 13:15:51 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Jan Kara <jack@...e.cz>
Cc:	Jens Axboe <axboe@...nel.dk>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christoph Hellwig <hch@...radead.org>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH vfs 1/2] lib: implement ptrset

Hello, Jan.

On Tue, Nov 25, 2014 at 05:37:07PM +0100, Jan Kara wrote:
> On Thu 13-11-14 17:09:27, Tejun Heo wrote:
> > Implement set of pointers.  Pointers can be added, deleted and
> > iterated.  It's currently implemented as a thin rbtree wrapper making
> > addition and removal O(log N).  A drawback is that iteration isn't RCU
> > safe, which is okay for now.  This will be used to remove
> > inode->i_devices.
>   Tejun, I've noticed this somewhat late but I guess you haven't noticed my
> patch series starting with a patch:
> blockdev: Don't use i_devices inode field
> 
> We can get rid of i_devices without tricks like this... I just need to
> improve how char devices are handled.

Ooh, that sounds perfect to me.  Please ignore these patches.

Thanks!

-- 
tejun
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