I'm curretly using linux-4.4.1 and patching the yaffs code to it.

Now I'm facing to the problem when I mount the filesystem to the device.

If user try to mount /dev/ram0 to /mnt as yaffs filesystem by mistake, it must be rejected because /dev/ram0 is not mtd device.

However, it is allowed when i use the current yaffs multi version.

I found out the yaffs single version includes matching the major number of super block device code in yaffs_internal_read_super as below (yaffs_vfs_single.c)

while as the yaffs multi version doesn't.(yaffs_vfs_multi.c)

 if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR)
  return NULL; /* This isn't an mtd device */

Why is it excluded in multi version?



[http://hanwha.eagleoffice.co.kr/neo/img/neo/theme/mail/sign/image/hanwha_value_en.jpg]

________________________________

[¿µ¹® ¼¼·ÎÇü CI Àû¿ë ¿¹½Ã]


  Byeongyeop, Ha

  Research Engineer
  SoC Development Group

  Core Component technology R&D Team

  Security Solution Business Unit.

  HANWHA TECHWIN CO.,LTD
  Office : 070-7147-8356
  Mobile : 010-5593-1512
  Email : byungyub.ha@hanwha.com<mailto:byungyub.ha@hanwha.com>


________________________________