Our git version is v2+ for some time now, but go.mod
still declared v1. Hopefully making both match makes
All the import paths have been fixed like this:
find . -name \*.go | xargs sed -i s%github.com/rfjakob/gocryptfs/%github.com/rfjakob/gocryptfs/v2/%
...and move all profiling functionality to its own file, as
the main function is already long enough.
Periodically saving the memory profile allows capturing the used
memory during normal operation, as opposed to on exit, where the
kernel has already issued FORGETs for all inodes.
This functionality has been used to create the memory profile shown
in https://github.com/rfjakob/gocryptfs/issues/132 .