linux-kernel - missing mnt_drop_write() on open error

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Message-Id: <E1IaJc0-000541-00@dorka.pomaz.szeredi.hu>
Date:	Wed, 26 Sep 2007 01:14:40 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	haveblue@...ibm.com
CC:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: missing mnt_drop_write() on open error

I get this at umount, if there was a failed open():

WARNING: at fs/namespace.c:586 __mntput()

I think the problem is that may_open() calls mnt_want_write(), but if
open doesn't succeed, mnt_drop_write() will not be called.

Miklos
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