mkfs.vfat: small tweak to comments

diff --git a/util-linux/mkfs_vfat.c b/util-linux/mkfs_vfat.c
index 930fd45ccc4ef729ff147ac126be6d842b537542..95ebcbfba0df683b142d544ab379581e71413671 100644 (file)
--- a/util-linux/mkfs_vfat.c
+++ b/util-linux/mkfs_vfat.c
@@ -429,6 +429,7 @@ int mkfs_vfat_main(int argc UNUSED_PARAM, char **argv)
        // Write filesystem image sequentially (no seeking)
        //
        {
+               // (a | b) is poor man's max(a, b)
                unsigned bufsize = reserved_sect;
                //bufsize |= sect_per_fat; // can be quite large
                bufsize |= 2; // use this instead
@@ -449,9 +450,10 @@ int mkfs_vfat_main(int argc UNUSED_PARAM, char **argv)
                if (volume_size_sect <= 0xffff)
                        STORE_LE(boot_blk->volume_size_sect, volume_size_sect);
                STORE_LE(boot_blk->media_byte, media_byte);
-               // Bad: this would make Linux to think that it's fat12/16
+               // wrong: this would make Linux think that it's fat12/16:
                //if (sect_per_fat <= 0xffff)
                //      STORE_LE(boot_blk->sect_per_fat, sect_per_fat);
+               // works:
                //STORE_LE(boot_blk->sect_per_fat, 0);
                STORE_LE(boot_blk->sect_per_track, sect_per_track);
                STORE_LE(boot_blk->heads, heads);