X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=options.c;h=b489e90210ae008be47b427195242a56272daa90;hb=002e57665ed7eebe920de6f1729ef2e403b7c6cc;hp=85574d7f818a2c33a9fc534d74793431914a4f14;hpb=29ac257cb18a38c20f970bd02f2bfb3a027309d5;p=fio.git

diff --git a/options.c b/options.c
index 85574d7f..b489e902 100644
--- a/options.c
+++ b/options.c
@@ -1306,8 +1306,17 @@ static int str_buffer_pattern_cb(void *data, const char *input)
 
 	assert(ret != 0);
 	td->o.buffer_pattern_bytes = ret;
-	if (!td->o.compress_percentage)
+
+	/*
+	 * If this job is doing any reading or has compression set,
+	 * ensure that we refill buffers for writes or we could be
+	 * invalidating the pattern through reads.
+	 */
+	if (!td->o.compress_percentage && !td_read(td))
 		td->o.refill_buffers = 0;
+	else
+		td->o.refill_buffers = 1;
+
 	td->o.scramble_buffers = 0;
 	td->o.zero_buffers = 0;