migration stuck in move_data_wait_for_state_change()
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#188 migration stuck in move_data_wait_for_state_change()
From John Hughes:
With current (March 17th) CVS I'm seeing a problem migrating processes from time to time.
Running my zz-migrate-cruelty script (attached) it sometimes seems to get stuck in move_data_wait_for_state_change
Stack trace shows:
schedule
move_data_wait_for_state_change
ssi_quiesce_movement
do_signal
do_notify_resume
work_notifysig
Looks like an issue with SMP synchronization (or lack of)...
With my latest changes (not yet in CVS) the zz-migrate-cruelty script no longer gets stuck. I tested successfully for 10+ minutes on two-node cluster.
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