This is a note to let you know that I've just added the patch titled
Drivers: hv: balloon: Do not post pressure status if interrupted
to the 3.10-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:
drivers-hv-balloon-do-not-post-pressure-status-if-interrupted.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From c5e2254f8d63a6654149aa32ac5f2b7dd66a976d Mon Sep 17 00:00:00 2001
From: "K. Y. Srinivasan" <[email protected]>
Date: Sun, 14 Jul 2013 22:38:12 -0700
Subject: Drivers: hv: balloon: Do not post pressure status if interrupted
From: "K. Y. Srinivasan" <[email protected]>
commit c5e2254f8d63a6654149aa32ac5f2b7dd66a976d upstream.
When we are posting pressure status, we may get interrupted and handle
the un-balloon operation. In this case just don't post the status as we
know the pressure status is stale.
Signed-off-by: K. Y. Srinivasan <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/hv/hv_balloon.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -975,6 +975,14 @@ static void post_status(struct hv_dynmem
dm->num_pages_ballooned +
compute_balloon_floor();
+ /*
+ * If our transaction ID is no longer current, just don't
+ * send the status. This can happen if we were interrupted
+ * after we picked our transaction ID.
+ */
+ if (status.hdr.trans_id != atomic_read(&trans_id))
+ return;
+
vmbus_sendpacket(dm->dev->channel, &status,
sizeof(struct dm_status),
(unsigned long)NULL,
Patches currently in stable-queue which might be from [email protected] are
queue-3.10/tools-hv-kvp-fix-a-bug-in-ipv6-subnet-enumeration.patch
queue-3.10/drivers-hv-balloon-do-not-post-pressure-status-if-interrupted.patch
queue-3.10/drivers-hv-balloon-fix-a-bug-in-the-hot-add-code.patch
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