How to mlock all pages of a process tree from console?

Question

"mlockall() locks all pages mapped into the address space of the calling process"

How to do it from console for a process tree?

Something like lockall sh -c "read_data | process_data | write_data", in style of nice, ionice and schedtool -e.

Answer 1

Implemented myself: libmlockall.

LD_PRELOAD it and it will call mlockall for each process it is being loaded into.

http://github.com/vi/libmlockall