From: Andrew Morton <akpm@linux-foundation.org>
To: Ian Kent <raven@themaw.net>
Cc: Kernel Mailing List <linux-kernel@vger.kernel.org>,
autofs mailing list <autofs@linux.kernel.org>
Subject: Re: [PATCH] autofs4: reinstate negatitive timeout of mount fails
Date: Tue, 21 Aug 2007 13:15:51 -0700 [thread overview]
Message-ID: <20070821131551.4026fb96.akpm@linux-foundation.org> (raw)
In-Reply-To: <1187688369.3318.12.camel@raven.themaw.net>
On Tue, 21 Aug 2007 17:26:09 +0800
Ian Kent <raven@themaw.net> wrote:
> Due to a change to fs/dcache.c:d_lookup() in the 2.6 kernel whereby only
> hashed dentrys are returned the negative caching of mount failures
> stopped working in the autofs4 module for nobrowse mount (ie. directory
> created at mount time and removed at umount or following a mount
> failure).
>
> This patch keeps track of the dentrys from mount fails in order to be
> able check the timeout since the last fail and return the appropriate
> status. In addition the timeout value is settable at load time as a
> module option and via sysfs using the module
> parameter /sys/module/autofs4/parameters/negative_timeout.
Boy, that's a complex-looking patch. I think I'll sit on this one
for 2.6.24 ;)
It seems to use a lot of list_for_each[_safe] which could
have been coded as list_for_each_entry[_safe], btw.
next prev parent reply other threads:[~2007-08-21 20:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-21 9:26 [PATCH] autofs4: reinstate negatitive timeout of mount fails Ian Kent
2007-08-21 14:19 ` Peter Staubach
2007-08-22 2:49 ` Ian Kent
2007-08-22 9:55 ` Ian Kent
2007-08-22 11:05 ` [autofs] " Ian Kent
2007-08-21 20:15 ` Andrew Morton [this message]
2007-08-22 2:56 ` Ian Kent
2007-08-22 3:27 ` [autofs] " Ian Kent
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