[CRIU] [PATCH] restorer: rework unmaping old VMA-s (v3)

[Pavel Emelyanov]

On 09/20/2013 08:10 PM, Andrey Vagin wrote:
> All process VMA-s are in "premmaped area". All restorer stuff are in
> bootstap "area", so we have two areas.
> 
> So we don't need to unmap extra VMA-s one by one. We can call munmap
> three times for the region before the first area, for the hole between
> areas and for the region after the second area.
> 
> The old scheme didn't work, because the list of VMA-s can be changed
> after collecting. It can be due to memory allocations by libc or due to
> increased stack.
> 
> v2: improve readability at the expense of beautiness
> v3: print return code of munmap in error messages
> Signed-off-by: Andrey Vagin <avagin at openvz.org>

  CC       pie/restorer.o
pie/restorer.c: In function ‘__export_restore_task’:
pie/restorer.c:600:5: error: ‘bootstrap_start’ undeclared (first use in this function)
pie/restorer.c:600:5: note: each undeclared identifier is reported only once for each function it appears in
pie/restorer.c:600:22: error: ‘bootstrap_len’ undeclared (first use in this function)