From: Arjan van de Ven <arjan@infradead.org>
Date: Mon, 3 Jul 2006 07:25:16 +0000 (-0700)
Subject: [PATCH] lockdep: annotate sunrpc code
X-Git-Tag: v2.6.18-rc1~53
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c6573c2904231279de0584787d6214f19a128d0b;p=pandora-kernel.git

[PATCH] lockdep: annotate sunrpc code

Add i_mutex ordering annotations to the sunrpc rpc_pipe code.  This code has 3
levels of i_mutex hierarchy in some cases: parent dir, client dir and file
inside client dir; the i_mutex ordering is I_MUTEX_PARENT -> I_MUTEX_CHILD ->
I_MUTEX_NORMAL

This patch applies this ordering annotation to the various functions.  This is
in line with the VFS expected ordering where it is always OK to lock a child
after locking a parent; the sunrpc code is very diligent in doing this
correctly.

Has no effect on non-lockdep kernels.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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