tree 8691366aa511f20146eb9cfe942e0d94c4136e1a
parent fbb9ce9530fd9b66096d5187fa6a115d16d9746c
author Ingo Molnar <mingo@elte.hu> 1151911491 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1151965624 -0700

[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>