[CRIU] [PATCH cr] dump: handle overmounted devices (v2)

[Andrey Vagin]

"init" in LXC opens /dev/null and then mounts devtmpfs in /dev,
so crtools can not resolve the path to the origin /dev/null.

crtools with the option --evasive-device will check the origin
device and a new device are the same and if it's true, crtools will
dump a new path.

v2: add a description for the option

Signed-off-by: Andrey Vagin <avagin at openvz.org>
---
 crtools.c         |    6 ++++++
 files-reg.c       |    4 ++++
 include/crtools.h |    1 +
 test/zdtm.sh      |    2 +-
 4 files changed, 12 insertions(+), 1 deletions(-)

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