tree d158c26b5e671d3a3c63ef331b0c9d4618c8845b
parent 0bd551b87ae0e8a123bffb2340c19a8ce9118b83
author Al Viro <viro@zeniv.linux.org.uk> 1541338716 -0500
committer Al Viro <viro@zeniv.linux.org.uk> 1541339546 -0500

fix do_emergency_remount_callback() and do_umount_root()

The former is racy - fetching ->s_root outside of ->s_umount.
The latter actually never propagates errors (ret in inner
scope shadows ret in the outer, so any assignments are lost
by the time we get to return ret;).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>