package/dosfstools/0001-mkfs-Default-to-64-32-heads-sectors-for-targets-smalle.patch

   1 From 1e76e5778a1885452939a79d9145b80634a5b023 Mon Sep 17 00:00:00 2001
   2 From: Andreas Bombe <aeb@debian.org>
   3 Date: Wed, 11 May 2016 03:44:58 +0200
   4 Subject: [PATCH] mkfs: Default to 64/32 heads/sectors for targets smaller than
   5  512 MB
   6
   7 This may put defaults in certain use cases a little bit more in line
   8 with the old defaults in versions up to 3.0.28. It has mostly aesthetic
   9 value in most cases.
  10
  11 Signed-off-by: Andreas Bombe <aeb@debian.org>
  12 Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
  13 ---
  14 Patch status: upstream
  15
  16  src/mkfs.fat.c | 10 ++++++++++
  17  1 file changed, 10 insertions(+)
  18
  19 diff --git a/src/mkfs.fat.c b/src/mkfs.fat.c
  20 index 8a320fd..bad492b 100644
  21 --- a/src/mkfs.fat.c
  22 +++ b/src/mkfs.fat.c
  23 @@ -519,6 +519,16 @@ static void establish_params(struct device_info *info)
  24      unsigned int cluster_size = 4;  /* starting point for FAT12 and FAT16 */
  25      int def_root_dir_entries = 512;
  26
  27 +    if (info->size < 512 * 1024 * 1024) {
  28 +       /*
  29 +        * These values are more or less meaningless, but we can at least
  30 +        * use less extreme values for smaller filesystems where the large
  31 +        * dummy values signifying LBA only access are not needed.
  32 +        */
  33 +       sec_per_track = 32;
  34 +       heads = 64;
  35 +    }
  36 +
  37      if (info->type != TYPE_FIXED) {
  38         /* enter default parameters for floppy disks if the size matches */
  39         switch (info->size / 1024) {
  40 --
  41 2.7.3
  42