Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote: > > Change the ITER_SOURCE and ITER_DEST direction macros into an enum and > > provide three new helper functions: > > > > iov_iter_dir() - returns the iterator direction > > iov_iter_is_dest() - returns true if it's an ITER_DEST iterator > > iov_iter_is_source() - returns true if it's an ITER_SOURCE iterator > > What for? We have two valid values - > 1) it is a data source > 2) it is not a data source > Why do we need to store that as an enum? Compile time type checking. David
