1 files changed, 9 insertions, 55 deletions

diff --git a/cmds-fi-usage.c b/cmds-fi-usage.c
index adf1c27f..54b8b1c1 100644
--- a/cmds-fi-usage.c
+++ b/cmds-fi-usage.c
@@ -859,76 +859,30 @@ out:
 const char * const cmd_filesystem_usage_usage[] = {
 	"btrfs filesystem usage [options] <path> [<path>..]",
 	"Show detailed information about internal filesystem usage .",
-	"-b|--raw           raw numbers in bytes",
-	"-h|--human-readable",
-	"                   human friendly numbers, base 1024 (default)",
-	"-H                 human friendly numbers, base 1000",
-	"--iec              use 1024 as a base (KiB, MiB, GiB, TiB)",
-	"--si               use 1000 as a base (kB, MB, GB, TB)",
-	"-k|--kbytes        show sizes in KiB, or kB with --si",
-	"-m|--mbytes        show sizes in MiB, or MB with --si",
-	"-g|--gbytes        show sizes in GiB, or GB with --si",
-	"-t|--tbytes        show sizes in TiB, or TB with --si",
+	HELPINFO_OUTPUT_UNIT_DF,
 	"-T                 show data in tabular format",
 	NULL
 };
 
 int cmd_filesystem_usage(int argc, char **argv)
 {
-	unsigned unit_mode = UNITS_DEFAULT;
 	int ret = 0;
-	int	i, more_than_one = 0;
-	int	tabular = 0;
+	unsigned unit_mode;
+	int i;
+	int more_than_one = 0;
+	int tabular = 0;
+
+	unit_mode = get_unit_mode_from_arg(&argc, argv, 1);
 
 	optind = 1;
 	while (1) {
 		int c;
-		static const struct option long_options[] = {
-			{ "raw", no_argument, NULL, 'b'},
-			{ "kbytes", no_argument, NULL, 'k'},
-			{ "mbytes", no_argument, NULL, 'm'},
-			{ "gbytes", no_argument, NULL, 'g'},
-			{ "tbytes", no_argument, NULL, 't'},
-			{ "si", no_argument, NULL, GETOPT_VAL_SI},
-			{ "iec", no_argument, NULL, GETOPT_VAL_IEC},
-			{ "human-readable", no_argument, NULL,
-				GETOPT_VAL_HUMAN_READABLE},
-			{ NULL, 0, NULL, 0 }
-		};
-
-		c = getopt_long(argc, argv, "bhHkmgtT", long_options, NULL);
 
+		c = getopt(argc, argv, "T");
 		if (c < 0)
 			break;
+
 		switch (c) {
-		case 'b':
-			unit_mode = UNITS_RAW;
-			break;
-		case 'k':
-			units_set_base(&unit_mode, UNITS_KBYTES);
-			break;
-		case 'm':
-			units_set_base(&unit_mode, UNITS_MBYTES);
-			break;
-		case 'g':
-			units_set_base(&unit_mode, UNITS_GBYTES);
-			break;
-		case 't':
-			units_set_base(&unit_mode, UNITS_TBYTES);
-			break;
-		case GETOPT_VAL_HUMAN_READABLE:
-		case 'h':
-			unit_mode = UNITS_HUMAN_BINARY;
-			break;
-		case 'H':
-			unit_mode = UNITS_HUMAN_DECIMAL;
-			break;
-		case GETOPT_VAL_SI:
-			units_set_mode(&unit_mode, UNITS_DECIMAL);
-			break;
-		case GETOPT_VAL_IEC:
-			units_set_mode(&unit_mode, UNITS_BINARY);
-			break;
 		case 'T':
 			tabular = 1;
 			break;