bcachefs: Add option for completely disabling nocow

This adds an option for completely disabling nocow mode, including the
locking in the data move path.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-02-24 19:07:21 -05:00
commit 33669e0cc9
3 changed files with 28 additions and 18 deletions