[RFC PATCH] mkfs.f2fs: use 512B as the sector size criterion

[Junling Zheng <zhengjunling@huawei.com>]

Use 512 bytes as the sector size criterion while specifying the
amount of sectors passed to mkfs.

Signed-off-by: Junling Zheng <zhengjunling@huawei.com>
---
 lib/libf2fs.c           | 11 ++++++++---
 mkfs/f2fs_format_main.c |  2 +-
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/lib/libf2fs.c b/lib/libf2fs.c
index 5f11796..5fdcdde 100644
--- a/lib/libf2fs.c
+++ b/lib/libf2fs.c
@@ -1002,9 +1002,14 @@ int f2fs_get_device_info(void)
 		if (get_device_info(i))
 			return -1;
 
-	if (c.wanted_total_sectors < c.total_sectors) {
-		MSG(0, "Info: total device sectors = %"PRIu64" (in %u bytes)\n",
-				c.total_sectors, c.sector_size);
+	if (c.wanted_total_sectors > c.total_sectors)
+		MSG(0, "Warning: total sectors = %"PRIu64", "
+			"wanted sectors = %"PRIu64", in %u bytes\n",
+			c.total_sectors, c.wanted_total_sectors, c.sector_size);
+	else {
+		MSG(0, "Info: total sectors = %"PRIu64", "
+			"wanted sectors = %"PRIu64", in %u bytes\n",
+			c.total_sectors, c.wanted_total_sectors, c.sector_size);
 		c.total_sectors = c.wanted_total_sectors;
 		c.devices[0].total_sectors = c.total_sectors;
 	}
diff --git a/mkfs/f2fs_format_main.c b/mkfs/f2fs_format_main.c
index f23fd84..71fd7c2 100644
--- a/mkfs/f2fs_format_main.c
+++ b/mkfs/f2fs_format_main.c
@@ -57,7 +57,7 @@ static void mkfs_usage()
 	MSG(0, "  -S sparse mode\n");
 	MSG(0, "  -t 0: nodiscard, 1: discard [default:1]\n");
 	MSG(0, "  -z # of sections per zone [default:1]\n");
-	MSG(0, "sectors: number of sectors. [default: determined by device size]\n");
+	MSG(0, "sectors: number of sectors (in 512 bytes). [default: determined by device size]\n");
 	exit(1);
 }
 
-- 
2.16.2


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