mm: add migration buffer-head debugfs interface
Issues with folio migration can be complicated, and at least for
buffer-heads the case with norefs is especially hard to debug, some
issues taking over 90 hours to reproduce. However, any improvements
on enhancing success rates for folio migrations can help a lot with
reducing the time we can migrate folios. So add a debugfs interface
for buffer-head folio migration so we can enable A/B testing for
future enhancements.
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
1 file changed
