Commit-ID: 5fde3b94abe06ea921e72d9f44dc2b78f88cf2c2
Gitweb: http://git.kernel.org/tip/5fde3b94abe06ea921e72d9f44dc2b78f88cf2c2
Author: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
AuthorDate: Mon, 12 Dec 2011 15:15:54 +0800
Committer: Pekka Enberg <penberg@xxxxxxxxxx>
CommitDate: Mon, 12 Dec 2011 23:35:36 +0200
kvm tools: protect shared global id in compat_mtx C.S.
The global id is shared, protect it when access it.
Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Signed-off-by: Pekka Enberg <penberg@xxxxxxxxxx>
---
tools/kvm/guest_compat.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/tools/kvm/guest_compat.c b/tools/kvm/guest_compat.c
index de97df5..8dd451b 100644
--- a/tools/kvm/guest_compat.c
+++ b/tools/kvm/guest_compat.c
@@ -20,6 +20,7 @@ static LIST_HEAD(messages);
int compat__add_message(const char *title, const char *desc)
{
struct compat_message *msg;
+ int msg_id;
msg = malloc(sizeof(*msg));
if (msg == NULL)
@@ -33,12 +34,12 @@ int compat__add_message(const char *title, const char *desc)
mutex_lock(&compat_mtx);
- msg->id = id;
+ msg->id = msg_id = id++;
list_add_tail(&msg->list, &messages);
mutex_unlock(&compat_mtx);
- return id++;
+ return msg_id;
cleanup:
if (msg) {
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|