bcachefs: Errcode tracepoint, documentation

Add a tracepoint for downcasting private errors to standard errors, so
they can be recovered even when not logged; also, add some
documentation.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-02-21 22:10:09 -05:00
commit eb386617be
4 changed files with 59 additions and 6 deletions