tree dff84a63141475c93b1aa8280bad249bcaa0b76c
parent 11548265f6b4fb1c11105a5f5dc04566b40ec230
author Yishai Hadas <yishaih@mellanox.com> 1336681685 +0300
committer chrmhoffmann <chrmhoffmann@gmail.com> 1586074509 +0200

IB/core: Fix mismatch between locked and pinned pages

commit c4870eb874ac16dccef40e1bc7a002c7e9156adc upstream.

Commit bc3e53f682d9 ("mm: distinguish between mlocked and pinned
pages") introduced a separate counter for pinned pages and used it in
the IB stack.  However, in ib_umem_get() the pinned counter is
incremented, but ib_umem_release() wrongly decrements the locked
counter.  Fix this.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>