X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=libringbuffer%2Fbackend.h;h=83e07e426b3de3458a995bcfa953e0e33ee9d1fb;hb=17dfb34b2e6613f3a6d2f084e2d78fe3c301ad98;hp=d93f6d1fd09ef2da267ce0b0a7307202a3f9427c;hpb=4746ae29409b78e96543a3b207c91a3c510c6476;p=lttng-ust.git

diff --git a/libringbuffer/backend.h b/libringbuffer/backend.h
index d93f6d1f..83e07e42 100644
--- a/libringbuffer/backend.h
+++ b/libringbuffer/backend.h
@@ -88,7 +88,7 @@ void lib_ring_buffer_write(const struct lib_ring_buffer_config *config,
 	 */
 	CHAN_WARN_ON(chanb, offset >= chanb->buf_size);
 	lib_ring_buffer_do_copy(config,
-				shmp_index(handle, shmp(handle, rpages->shmp)->p, offset & ~(chanb->subbuf_size - 1)),
+				shmp_index(handle, shmp(handle, rpages->shmp)->p, offset & (chanb->subbuf_size - 1)),
 				src, len);
 	ctx->buf_offset += len;
 }