Re: [RFD] Combined fork-exec syscall.

[Jamie Lokier]

Mark Mielke wrote:
> If the argument is that vfork(), exec()
> must scan the file descriptors to determine which ones have FD_CLOEXEC set,
> then perhaps the answer is to index the FD_CLOEXEC bits of file descriptors?

More precisely, to index the file descriptors whih do _not_ have the
FD_CLOEXEC bit set - those are the file descriptors to copy into the
new process.

A more relevant optimisation is to make searching for new file
descriptors O(1) in accept(), yet that was discussed years ago and it
was decided it wasn't worth doing.

-- Jamie