X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lib%2Fringbuffer%2Ffrontend_api.h;h=c36ec3dc2e3f0e3e8436a54ebee50b0be26d77a4;hb=f5ea58003633d154b84c5df14a7e1fa7fcccb15c;hp=13975602380bf02e82979c071969be0eaa56612a;hpb=61eb4c393f32dbea95e9125c6ec4d8cdad535f70;p=lttng-modules.git

diff --git a/lib/ringbuffer/frontend_api.h b/lib/ringbuffer/frontend_api.h
index 13975602..c36ec3dc 100644
--- a/lib/ringbuffer/frontend_api.h
+++ b/lib/ringbuffer/frontend_api.h
@@ -125,6 +125,14 @@ int lib_ring_buffer_try_reserve(const struct lib_ring_buffer_config *config,
 	 * boundary. It's safe to write.
 	 */
 	*o_end = *o_begin + ctx->slot_size;
+
+	if (unlikely((subbuf_offset(*o_end, chan)) == 0))
+		/*
+		 * The offset_end will fall at the very beginning of the next
+		 * subbuffer.
+		 */
+		return 1;
+
 	return 0;
 }