From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 3 Jul 2006 07:24:51 +0000 (-0700)
Subject: [PATCH] lockdep: allow read_lock() recursion of same class
X-Git-Tag: v2.6.18-rc1~87
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6c9076ec9cd448f43bbda871352a7067f456ee26;p=pandora-kernel.git

[PATCH] lockdep: allow read_lock() recursion of same class

From: Ingo Molnar <mingo@elte.hu>

lockdep so far only allowed read-recursion for the same lock instance.
This is enough in the overwhelming majority of cases, but a hostap case
triggered and reported by Miles Lane relies on same-class
different-instance recursion.  So we relax the restriction on read-lock
recursion.

(This change does not allow rwsem read-recursion, which is still
forbidden.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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