X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=ltt-usertrace%2Fltt%2Fltt-usertrace-fast.h;h=778e8eb0a6d9e93c71e2865f79287d79774d2b8a;hb=680b9daadac4954ac6949f17bcf1889805811f09;hp=b0d222f83bc0467da307bd1daa53d5780b06af11;hpb=39c1a823855ca5c0dbecf361adef32ad0d893421;p=lttv.git

diff --git a/ltt-usertrace/ltt/ltt-usertrace-fast.h b/ltt-usertrace/ltt/ltt-usertrace-fast.h
index b0d222f8..778e8eb0 100644
--- a/ltt-usertrace/ltt/ltt-usertrace-fast.h
+++ b/ltt-usertrace/ltt/ltt-usertrace-fast.h
@@ -476,7 +476,7 @@ static inline void * __attribute__((no_instrument_function)) ltt_reserve_slot(
 			 index in the buffer being the one which will win this loop. */
 		/* If the buffer is not in overwrite mode, pushing the reader only
 			 happen if a sub-buffer is corrupted */
-		if((SUBBUF_TRUNC(offset_end, ltt_buf) 
+		if((SUBBUF_TRUNC(offset_end-1, ltt_buf) 
 					- SUBBUF_TRUNC(consumed_old, ltt_buf)) 
 							>= ltt_buf->alloc_size)
 			consumed_new = SUBBUF_ALIGN(consumed_old, ltt_buf);