Demand paged executables

[Brad Smith]

Two questions/points on this:

	- Wouldn't there be some problems with other links to
	  a file being invalidated (pointing to the old version)
	  if the file was unlinked, a new inode allocated, and
	  a new link created to copy over an executing program?

	- It seems the reason for not locking shell scripts is
	  that virtual memory for the executable is not being
	  paged out of the file containing the script.  Some
	  program (typically a shell) is being run with the
	  contents of the script as input... or something to
	  that effect.

Brad Smith
CIS Board, UC Santa Cruz
brad at saturn.ucsc.edu