X-Git-Url: http://git.lttng.org/?p=lttng-modules.git;a=blobdiff_plain;f=src%2Flttng-abi.c;h=09e437884c8e54971dad9597d6f517cb8cf660fc;hp=1b08b3b7412270ff2199ab3d3bde1e379ca23370;hb=18f12d55db4f9c78bde2738931a45557050858eb;hpb=db2511b4c306a7d8b3a6f81f4741ab6a318490d5

diff --git a/src/lttng-abi.c b/src/lttng-abi.c
index 1b08b3b7..09e43788 100644
--- a/src/lttng-abi.c
+++ b/src/lttng-abi.c
@@ -933,6 +933,7 @@ unsigned int lttng_event_notifier_group_notif_poll(struct file *filp,
 	const struct lib_ring_buffer_config *config = &chan->backend.config;
 	int finalized, disabled;
 	unsigned long consumed, offset;
+	size_t subbuffer_header_size = config->cb.subbuffer_header_size();
 
 	if (filp->f_mode & FMODE_READ) {
 		poll_wait_set_exclusive(wait);
@@ -960,7 +961,7 @@ retry:
 			/*
 			 * If there is a non-empty subbuffer, flush and try again.
 			 */
-			if (subbuf_offset(offset, chan) != 0) {
+			if (subbuf_offset(offset, chan) > subbuffer_header_size) {
 				lib_ring_buffer_switch_remote(buf);
 				goto retry;
 			}