On Thu, 27 May 2021, Fox Chen wrote:

The Path lookup is a very complex subject in VFS. The path-lookup
document provides a very detailed guidance to help people understand
how path lookup works in the kernel. This document was originally
written based on three lwn articles five years ago. As times goes by,
some of the content is outdated. This patchset is intended to update
the document to make it more relevant to current codebase.

Thanks for persisting.  Sorry for the delay.

All:
  Reviewed-by: NeilBrown [off-list ref]

I've noted a couple of little issues with one patch.  Hopefully Jon can
simply fix those up rather than requiring a resubmission of the whole
series.

To be honest, I haven't examined patch 4 in as much detail as I'd like,
and it required the biggest change since last time.  But I think it is
good enough.  It might even be excellent.

NeilBrown