Since v4.15-rc3-4-gae5e165d855d, <linux/iversion.h> contains a new
inode->i_version API and it is not included by default.
Signed-off-by: Auke Kok <auke.kok@versity.com>
The new variant of the code that recomputes the augmented value
is designed to handle non-scalar types and to facilitate that, it
has new semantics for the _compute callback. It is now passed a
boolean flag `exit` that indicates that if the value isn't changed,
it should exit and halt propagation.
The callback function now shall return whether that propagation should
stop or not, and not the computed new value. The callback can now
directly update the new computed value in the node.
Signed-off-by: Auke Kok <auke.kok@versity.com>
The modern upstream kernel has a ->iterate() readdir file_operattions
method which takes a context and calls dir_emit(). We add some
kernelcompat helpers to juggle the various function definitions, types,
and arguments to support both the old ->readdir(filldir) and the new
->iterate(ctx) interfaces.
Signed-off-by: Zach Brown <zab@versity.com>