From: Al Viro <viro@ZenIV.linux.org.uk>
To: Ian Kent <raven@themaw.net>
Cc: Nick Piggin <npiggin@suse.de>,
Trond Myklebust <Trond.Myklebust@netapp.com>,
David Howells <dhowells@redhat.com>,
Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linux NFS Mailing List <linux-nfs@vger.kernel.org>
Subject: Re: [PATCH 0/3] Fixes for vfs-scale and vfs-automount
Date: Thu, 24 Feb 2011 03:14:39 +0000 [thread overview]
Message-ID: <20110224031439.GR22723@ZenIV.linux.org.uk> (raw)
In-Reply-To: <1298516618.2916.20.camel@perseus>
On Thu, Feb 24, 2011 at 11:03:38AM +0800, Ian Kent wrote:
> I also have a sick feeling that dentrys may become negative at any point
> after __d_lookup_rcu() .....
Yes. To get stability of ->d_inode (assuming the sucker isn't pinned down
in normal way by ->d_count) you need ->d_lock.
> > Ho-hum... I can reach RHTS, but I'd rather do that at home boxen, if
> > possible... Has it been reproduced on UP boxen with SMP kernels, BTW?
>
> Nope, I'd need to build a kernel specifically for that. I'm not sure how
> useful that would be though since the test is specifically meant to
> expose problems with multiple concurrent processes accessing an
> automount tree. I don't see any problem running the Connectathon tests
> which is essentially one automount and one client process.
Heh... No, it's just that the only SMP box I have locally right now
is dual ultrasparc. Anyway, I can live with RHTS.
next prev parent reply other threads:[~2011-02-24 3:15 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-18 4:05 [PATCH 0/3] Fixes for vfs-scale and vfs-automount Ian Kent
2011-01-18 4:06 ` [PATCH 1/3] autofs4 - fix get_next_positive_dentry() Ian Kent
2011-01-18 4:06 ` [PATCH 2/3] vfs - fix dentry ref count in do_lookup() Ian Kent
2011-01-18 4:44 ` Al Viro
2011-01-18 4:06 ` [PATCH 3/3] autofs4 - fix debug print in autofs4_lookup() Ian Kent
2011-01-19 7:06 ` [PATCH 0/3] Fixes for vfs-scale and vfs-automount Ian Kent
2011-02-15 14:25 ` Ian Kent
2011-02-23 7:22 ` Ian Kent
2011-02-23 16:37 ` Linus Torvalds
2011-02-24 1:58 ` Al Viro
2011-02-24 3:03 ` Ian Kent
2011-02-24 3:14 ` Al Viro [this message]
2011-02-24 3:28 ` Ian Kent
2011-02-24 3:28 ` Ian Kent
2011-02-24 3:58 ` Al Viro
2011-02-24 5:47 ` Al Viro
2011-02-24 7:23 ` Ian Kent
2011-02-24 6:34 ` Ian Kent
2011-02-24 6:34 ` Ian Kent
2011-02-24 7:07 ` Al Viro
2011-02-24 10:07 ` Ian Kent
2011-02-24 10:07 ` Ian Kent
2011-02-24 14:59 ` Al Viro
2011-02-24 15:18 ` Al Viro
2011-02-25 3:07 ` Ian Kent
2011-02-24 19:10 ` Al Viro
2011-02-24 19:10 ` Al Viro
2011-02-24 10:21 ` Ian Kent
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