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Date: Thu, 20 Sep 2001 17:40:00 -0400 (EDT)
From: Alexander Viro <viro@math.psu.edu>
To: Andrea Arcangeli <andrea@suse.de>
cc: Linus Torvalds <torvalds@transmeta.com>,
        Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Linux 2.4.10-pre11
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On Thu, 20 Sep 2001, Andrea Arcangeli wrote:

> > Sigh... Try BLKFLSBUF + write() + BLKFLSBUF.
> 
> write will return -EIO and second BLKFLSBUF will do nothing.

Now compare that with behaviour of -pre10 (not to mention the
(in)sanity of "this ioctl() will make all IO on the fd fail until
somebody opens the same file" semantics).