X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=lttng-abi.c;h=8f63ad94c8fb053d9178aa91aa71d14d317f4e1b;hb=92d9f5e6df0f72842b28ccd303569c88e183325a;hp=93cdce3e0f00ec37e007ae17a54bce290ee035df;hpb=96528ccaca8172e68b52254d1a80d8b6bd45cd45;p=lttng-modules.git

diff --git a/lttng-abi.c b/lttng-abi.c
index 93cdce3e..8f63ad94 100644
--- a/lttng-abi.c
+++ b/lttng-abi.c
@@ -622,9 +622,11 @@ unsigned int lttng_metadata_ring_buffer_poll(struct file *filp,
 		if (finalized)
 			mask |= POLLHUP;
 
+		mutex_lock(&stream->metadata_cache->lock);
 		if (stream->metadata_cache->metadata_written >
 				stream->metadata_out)
 			mask |= POLLIN;
+		mutex_unlock(&stream->metadata_cache->lock);
 	}
 
 	return mask;
@@ -922,7 +924,6 @@ int lttng_abi_open_metadata_stream(struct file *channel_file)
 	metadata_stream->priv = buf;
 	stream_priv = metadata_stream;
 	metadata_stream->transport = channel->transport;
-	mutex_init(&metadata_stream->lock);
 
 	/*
 	 * Since life-time of metadata cache differs from that of