I could not know if HAVE_FILE_FADVISE is defined

or not in file_fadvise.c. Change test program to check
former data_size less or eaqul to latter one.

Signed-off-by: Finix Yan yancw@info2soft.com

tests/zfs-tests/cmd/file/file_fadvise.c

@@ -84,10 +84,6 @@ main(int argc, char *argv[])
 		return (1);
 	}
 
-#ifndef HAVE_FILE_FADVISE
-	return (1);
-#endif
-
 	if ((fd = open(filename, O_RDWR, 0666)) < 0) {
 		perror("open");
 		return (1);

tests/zfs-tests/tests/functional/fadvise/fadvise_sequential.ksh

@@ -40,6 +40,9 @@
 # 6. latter data_size should be bigger than former one
 #
 
+# NOTE: if HAVE_FILE_FADVISE is not defined former data_size
+# should less or eaqul to latter one
+
 verify_runnable "global"
 
 FILE=$TESTDIR/$TESTFILE0
@@ -66,12 +69,12 @@ sync_pool $TESTPOOL
 
 data_size1=$(getstat data_size)
 
-file_fadvise -f $FILE -a 2 || log_unsupported "fadvise support required"
+log_must file_fadvise -f $FILE -a 2
 sleep 10
 
 data_size2=$(getstat data_size)
 log_note "original data_size is $data_size1, final data_size is $data_size2"
 
-log_must [ $data_size1 -lt $data_size2 ]
+log_must [ $data_size1 -le $data_size2 ]
 
 log_pass "Ensure data could be prefetched"