This ABI is renamed and moved to a new location /sys/kernel/fadump/release_mem. What: /sys/kernel/fadump_release_mem Date: Feb 2012 Contact: linuxppc-dev@lists.ozlabs.org Description: write only This is a special sysfs file and only available when the system is booted to capture the vmcore using FADump. It is used to release the memory reserved by FADump to save the crash dump.