Delete unnecessary -d options from umount
The -d option to umount is unnecessary in cases where the original
mount was created with '-o loop' (it says so in the man page).
Moreover, there's a demonstrable bug when using 'umount -d' in this
case: umount complains that it's unable to delete the loop device
in this case. This change silences those messages.
The demonstrated bug in umount is a plausible explanation for build
failures characterized by unexpected failures of 'mount -o loop';
see the BUG, below.
BUG=chromium-os:24975
TEST=run the changed commands, see no loopback devices leaked
Change-Id: If923584f931c5a957f47cda6daeee2388c3c3fe9
Reviewed-on: https://gerrit.chromium.org/gerrit/16187
Reviewed-by: David James <davidjames@chromium.org>
Tested-by: Richard Barnette <jrbarnette@chromium.org>
3 files changed
