X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=libringbuffer%2Ffrontend_api.h;h=a2a9af39aea777998c5d96cdde5f632f500c8cf7;hb=1ad21f709e7e1537b4cd771f5def29adb404194a;hp=b5406b0ef9d3678d44f706b23d66117b5659fd9e;hpb=0bf3c920174f81b8675984010785b8af9b9b1b59;p=lttng-ust.git

diff --git a/libringbuffer/frontend_api.h b/libringbuffer/frontend_api.h
index b5406b0e..a2a9af39 100644
--- a/libringbuffer/frontend_api.h
+++ b/libringbuffer/frontend_api.h
@@ -126,6 +126,14 @@ int lib_ring_buffer_try_reserve(const struct lttng_ust_lib_ring_buffer_config *c
 	 * boundary. It's safe to write.
 	 */
 	*o_end = *o_begin + ctx->slot_size;
+
+	if (caa_unlikely((subbuf_offset(*o_end, chan)) == 0))
+		/*
+		 * The offset_end will fall at the very beginning of the next
+		 * subbuffer.
+		 */
+		return 1;
+
 	return 0;
 }