X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lib%2Fringbuffer%2Fring_buffer_frontend.c;h=664e8652012fece589dac16b1ca3338113a8f9ed;hb=2d70eed13e3c9a656eec50677940f8ef99eccabf;hp=f939787837c6fbb46ab501fcf75ff6c7d81c586a;hpb=0d260d3d3e28849772a060a9b1374712c0959fca;p=lttng-modules.git

diff --git a/lib/ringbuffer/ring_buffer_frontend.c b/lib/ringbuffer/ring_buffer_frontend.c
index f9397878..664e8652 100644
--- a/lib/ringbuffer/ring_buffer_frontend.c
+++ b/lib/ringbuffer/ring_buffer_frontend.c
@@ -40,6 +40,7 @@
 #include <linux/delay.h>
 #include <linux/module.h>
 #include <linux/percpu.h>
+#include <linux/kref.h>
 #include <asm/cacheflush.h>
 
 #include <wrapper/ringbuffer/config.h>
@@ -48,7 +49,6 @@
 #include <wrapper/ringbuffer/iterator.h>
 #include <wrapper/ringbuffer/nohz.h>
 #include <wrapper/atomic.h>
-#include <wrapper/kref.h>
 #include <wrapper/percpu-defs.h>
 #include <wrapper/timer.h>
 
@@ -1021,10 +1021,7 @@ int lib_ring_buffer_open_read(struct lib_ring_buffer *buf)
 
 	if (!atomic_long_add_unless(&buf->active_readers, 1, 1))
 		return -EBUSY;
-	if (!lttng_kref_get(&chan->ref)) {
-		atomic_long_dec(&buf->active_readers);
-		return -EOVERFLOW;
-	}
+	kref_get(&chan->ref);
 	lttng_smp_mb__after_atomic();
 	return 0;
 }