commit: c4870eb874ac16dccef40e1bc7a002c7e9156adc
From: Yishai Hadas <[email protected]>
Date: Thu, 10 May 2012 23:28:05 +0300
Subject: 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 <[email protected]>
Reviewed-by: Christoph Lameter <[email protected]>
Cc: <[email protected]>
Signed-off-by: Roland Dreier <[email protected]>
---
drivers/infiniband/core/umem.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
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 @@ void ib_umem_release(struct ib_umem *umem)
} 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);
--
1.7.3.4
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