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| author | K. Y. Srinivasan <kys@microsoft.com> | 2017-04-30 16:21:18 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-05-18 16:55:28 +0200 |
| commit | 54a66265d6754b37fb4baf1d970ec88a6225a988 (patch) | |
| tree | 308f05e5a3e1c693fc8c5952ec2ecc942baab42e /drivers/hv/channel.c | |
| parent | 1e052a16eb2caf6727b594cad0744ccdfddf4254 (diff) | |
| download | lwn-54a66265d6754b37fb4baf1d970ec88a6225a988.tar.gz lwn-54a66265d6754b37fb4baf1d970ec88a6225a988.zip | |
Drivers: hv: vmbus: Fix rescind handling
Fix the rescind handling. This patch addresses the following rescind
scenario that is currently not handled correctly:
If a rescind were to be received while the offer is still being
peocessed, we will be blocked indefinitely since the rescind message
is handled on the same work element as the offer message. Fix this
issue.
I would like to thank Dexuan Cui <decui@microsoft.com> and
Long Li <longli@microsoft.com> for working with me on this patch.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/channel.c')
| -rw-r--r-- | drivers/hv/channel.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 736ac76d2a6a..e9bf0bb87ac4 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -630,9 +630,13 @@ void vmbus_close(struct vmbus_channel *channel) */ list_for_each_safe(cur, tmp, &channel->sc_list) { cur_channel = list_entry(cur, struct vmbus_channel, sc_list); - if (cur_channel->state != CHANNEL_OPENED_STATE) - continue; vmbus_close_internal(cur_channel); + if (cur_channel->rescind) { + mutex_lock(&vmbus_connection.channel_mutex); + hv_process_channel_removal(cur_channel, + cur_channel->offermsg.child_relid); + mutex_unlock(&vmbus_connection.channel_mutex); + } } /* * Now close the primary. |