IB/core: Fix mismatch between locked and pinned pages
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>
Cc: <stable@vger.kernel.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index 71f0c0f..a841123 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -269,7 +269,7 @@
} else
down_write(&mm->mmap_sem);
- current->mm->locked_vm -= diff;
+ current->mm->pinned_vm -= diff;
up_write(&mm->mmap_sem);
mmput(mm);
kfree(umem);