Al Viro 306bb73d12 fix the crap in dst/dcore
* don't reinvent the wheels, please - open_bdev_exclusive() is there
  for purpose
* both open_by_devnum() and open_bdev_exclusive() return ERR_PTR(...)
  upon error, not NULL

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-16 12:16:44 -05:00
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