Changes

** shared memory "identifier" to detect the sharing

** shared memory "identifier" to detect the sharing

* proc pagemap file says which pages are to be dumped and which are not (to be fixed as well)

* proc pagemap file says which pages are to be dumped and which are not (to be fixed as well)

* Ptrace SEIZE is used to dump the memory contents

* Ptrace SEIZE is used to grab pages from task's VM into pipe (with vmsplice)

=== Restoring ===

=== Restoring ===

This one depends only on the /proc/pid/map_files/ to restore the shmem regions -- tasks just open some other's link and map it to create shmem region. The pages restoration just writes page data "in place".

This one depends only on the /proc/pid/map_files/ to restore the shmem regions -- tasks just open some other's link and map it to create shmem region. The pages restoration just writes page data "in place".

=== Non linear mappings ===

=== Non linear mappings ===