From: Jan Blunck <jblunck@suse.de>
To: Kirill Korotaev <dev@sw.ru>
Cc: Neil Brown <neilb@suse.de>, 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: Fri, 10 Mar 2006 13:02:33 +0100 [thread overview]
Message-ID: <20060310120232.GM4243@hasse.suse.de> (raw)
In-Reply-To: <44116198.7000000@sw.ru>
On Fri, Mar 10, Kirill Korotaev wrote:
> >I think that we should go for the first.
> just an idea which came to my mind:
> can't we fix it the following way:
> 1. fix select_parent() when called from generic_shutdown_super() to loop
> until _all_ dentries are shrinked (not only those, with d_count = 1);
> this guarentees that no dentries are left.
> 2. no dentries are left, but iput() can be in progress.
> So can't we simply make invalidate_inodes() to be in a loop with
> schedule() until no busy inodes are left?!
But this hides the places where dput() is called after mntput() and locks up
when somebody forgets to call dput() at all. And I think we should printk() in
that situations instead of waiting for them.
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:[~2006-03-10 12:02 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 [this message]
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
2006-03-13 5:45 ` Neil Brown
2006-03-13 15:52 ` Balbir Singh
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