From: Jan Blunck <jblunck@suse.de>
To: Neil Brown <neilb@suse.de>
Cc: Kirill Korotaev <dev@openvz.org>,
akpm@osdl.org, viro@zeniv.linux.org.uk, olh@suse.de,
bsingharora@gmail.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Fix shrink_dcache_parent() against shrink_dcache_memory() race (3rd updated patch)]
Date: Mon, 13 Mar 2006 00:03:31 +0100 [thread overview]
Message-ID: <20060312230331.GO4243@hasse.suse.de> (raw)
In-Reply-To: <17428.39221.861124.797480@cse.unsw.edu.au>
On Mon, Mar 13, Neil Brown wrote:
> No you don't.
Err, you are right. But this brings a new idea to my mind: why don't we use
s_umount to prevent umounting while we prune one dentry? Something like:
if (down_read_trylock()) {
if (s_root)
prune_one_dentry()
up_read()
}
// else just skip it
So maybe our prunes counter isn't the only way to go. Comments?
Regards,
Jan
--
Jan Blunck jblunck@suse.de
SuSE LINUX AG - A Novell company
Maxfeldstr. 5 +49-911-74053-608
D-90409 Nürnberg http://www.suse.de
next prev parent reply other threads:[~2006-03-12 23:03 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-09 16:58 [PATCH] Fix shrink_dcache_parent() against shrink_dcache_memory() race (3rd updated patch)] Jan Blunck
2006-03-09 17:07 ` Kirill Korotaev
2006-03-10 5:09 ` Neil Brown
2006-03-10 8:28 ` Kirill Korotaev
2006-03-10 10:59 ` Jan Blunck
2006-03-10 11:23 ` Kirill Korotaev
2006-03-10 11:56 ` Neil Brown
2006-03-10 12:02 ` Jan Blunck
2006-03-10 12:19 ` Kirill Korotaev
2006-03-10 11:51 ` Neil Brown
2006-03-10 12:31 ` Jan Blunck
2006-03-10 17:17 ` Balbir Singh
2006-03-12 21:57 ` Neil Brown
2006-03-12 23:03 ` Jan Blunck [this message]
2006-03-13 5:45 ` Neil Brown
2006-03-13 15:52 ` Balbir Singh
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