I couldn't remember what the return value from copy_to_iter() was, so I wrote some documentation and linked it into the kernel-doc tree. Matthew Wilcox (Oracle) (3): iov_iter: Add skeleton documentation iov_iter: Add kernel-doc iov_iter: Move internal documentation Documentation/core-api/index.rst | 1 + Documentation/core-api/iov_iter.rst | 21 ++++++++ include/linux/uio.h | 74 +++++++++++++++++++++++++++++ lib/iov_iter.c | 41 ---------------- 4 files changed, 96 insertions(+), 41 deletions(-) create mode 100644 Documentation/core-api/iov_iter.rst -- 2.33.0