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Drivers: hv: balloon: Initialize the transaction ID just before sending the packet 

Each message sent from the guest carries with it a transaction ID.
Assign the transaction ID just before putting the message on the VMBUS.
This would help in debugging on the host side.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
K. Y. Srinivasan 2013-07-17 17:27:27 -07:00 committed by Greg Kroah-Hartman
parent 6741335bc7
commit 20138d6cb8
1 changed files with 2 additions and 2 deletions
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4
drivers/hv/hv_balloon.c
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@ -828,7 +828,6 @@ static void hot_add_req(struct work_struct *dummy)
memset(&resp, 0, sizeof(struct dm_hot_add_response));
resp.hdr.type = DM_MEM_HOT_ADD_RESPONSE;
resp.hdr.size = sizeof(struct dm_hot_add_response);
resp.hdr.trans_id = atomic_inc_return(&trans_id);
#ifdef CONFIG_MEMORY_HOTPLUG
pg_start = dm->ha_wrk.ha_page_range.finfo.start_page;
@ -890,6 +889,7 @@ static void hot_add_req(struct work_struct *dummy)
pr_info("Memory hot add failed\n");
dm->state = DM_INITIALIZED;
resp.hdr.trans_id = atomic_inc_return(&trans_id);
vmbus_sendpacket(dm->dev->channel, &resp,
sizeof(struct dm_hot_add_response),
(unsigned long)NULL,
@ -1076,7 +1076,6 @@ static void balloon_up(struct work_struct *dummy)
bl_resp = (struct dm_balloon_response *)send_buffer;
memset(send_buffer, 0, PAGE_SIZE);
bl_resp->hdr.type = DM_BALLOON_RESPONSE;
bl_resp->hdr.trans_id = atomic_inc_return(&trans_id);
bl_resp->hdr.size = sizeof(struct dm_balloon_response);
bl_resp->more_pages = 1;
@ -1104,6 +1103,7 @@ static void balloon_up(struct work_struct *dummy)
*/
do {
bl_resp->hdr.trans_id = atomic_inc_return(&trans_id);
ret = vmbus_sendpacket(dm_device.dev->channel,
bl_resp,
bl_resp->hdr.size,