On Wed, Jun 10, 2020 at 06:36:16PM -0700, Matthew Wilcox wrote:
while (file->f_mode & FMODE_OVL_UPPER)
file = file->private_data;
Or are you proposing that overlayfs copy FMODE_HUGEPAGES from the
underlying fs to the overlaying fs?
The latter - that way nobody outside of overlayfs needs to know what
its ->private_data points to, for one thing. And it's cheaper that