Re: dcache shrink list corruption?

[Al Viro <viro@ZenIV.linux.org.uk>]

On Thu, May 01, 2014 at 10:02:33PM +0100, Al Viro wrote:
> *grumble*
> 
> Looks like gmail filtering is buggered again.  The previous mail got
> bounced by gmail, both for Miklos and for Linus ;-/  Hell knows if
> this one gets through; the original is at http://lkml.org/lkml/2014/5/1/235,
> bounce being bloody vague, as usual.

... and so has this one, the bounce being

[quote]
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  torvalds@linux-foundation.org
    SMTP error from remote mail server after end of data:
    host ASPMX.L.GOOGLE.COM [173.194.67.27]: 550-5.7.1 [195.92.253.2      12] Our system has detected that this message is
    550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail,
    550-5.7.1 this message has been blocked. Please visit
    550-5.7.1 http://support.google.com/mail/bin/answer.py?hl=en&answer=188131 for
    550 5.7.1 more information. cv1si45381wib.71 - gsmtp
  miklos@szeredi.hu
    SMTP error from remote mail server after end of data:
    host ASPMX.L.GOOGLE.COM [173.194.67.27]: 550-5.7.1 [195.92.253.2      12] Our system has detected that this message is
    550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail,
    550-5.7.1 this message has been blocked. Please visit
    550-5.7.1 http://support.google.com/mail/bin/answer.py?hl=en&answer=188131 for
    550 5.7.1 more information. bb7si53528wib.20 - gsmtp
[endquote]

What the hell is going on?