Optimize pattern verify

[fio.git] / options.c

diff --git a/options.c b/options.c
index 8fb93ca7a0c2c6a331a75e5250c86f0d9e37e156..c3fdb56314a5007c00bab2bdee57817816c9e9ee 100644 (file)
--- a/options.c
+++ b/options.c
@@ -698,6 +698,14 @@ static int str_verify_pattern_cb(void *data, const char *input)
                memcpy(&td->o.verify_pattern[i], &td->o.verify_pattern[0], i);
                i *= 2;
        }
+       if (i == 1) {
+               /*
+                * The code in verify_io_u_pattern assumes a single byte pattern
+                * fills the whole verify pattern buffer.
+                */
+               memset(td->o.verify_pattern, td->o.verify_pattern[0],
+                      MAX_PATTERN_SIZE);
+       }
 
        td->o.verify_pattern_bytes = i;