This is a note to let you know that I've just added the patch titled
IB/core: Fix mismatch between locked and pinned pages
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ib-core-fix-mismatch-between-locked-and-pinned-pages.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From c4870eb874ac16dccef40e1bc7a002c7e9156adc Mon Sep 17 00:00:00 2001
From: Yishai Hadas <[email protected]>
Date: Thu, 10 May 2012 23:28:05 +0300
Subject: IB/core: Fix mismatch between locked and pinned pages
From: Yishai Hadas <[email protected]>
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 <[email protected]>
Reviewed-by: Christoph Lameter <[email protected]>
Signed-off-by: Roland Dreier <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/infiniband/core/umem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -268,7 +268,7 @@ void ib_umem_release(struct ib_umem *ume
} 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);
Patches currently in stable-queue which might be from [email protected] are
queue-3.0/ib-core-fix-mismatch-between-locked-and-pinned-pages.patch
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