commit a99e4e413e1ab9f3c567b5519f5557afd786dc62
author Vernon Mauery <vernux@us.ibm.com> Sat Jul 01 04:35:42 2006 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> Sat Jul 01 09:55:57 2006 -0700
tree 31998183648206018452ae0c3c46aaa19724bd74
parent 9262e9149f346a5443300f8c451b8e7631e81a42

[PATCH] pi-futex: fix mm_struct memory leak

lock_queue was getting called essentially twice in a row and was
continually incrementing the mm_count ref count, thus causing a memory
leak.

Dinakar Guniguntala provided a proper fix for the problem that simply grabs
the spinlock for the hash bucket queue rather than calling lock_queue.

The second time we do a queue_lock in futex_lock_pi, we really only need to
take the hash bucket lock.

Signed-off-by: Dinakar Guniguntala <dino@in.ibm.com>
Signed-off-by: Vernon Mauery <vernux@us.ibm.com>
Acked-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>