Hi Al, this series fixes a few issues and cleans up the helpers that read from or write to kernel space buffers, and ensures that we don't change the address limit if we are using the ->read_iter and ->write_iter methods that don't need the changed address limit. I did not add your suggested comments on the instances using uaccess_kernel as all of them already have comments. If you have anything better in mind feel free to throw in additional comments. Changes since v3: - keep call_read_iter/call_write_iter for now - don't modify an existing long line - update a change log Changes since v2: - picked up a few ACKs Changes since v1: - __kernel_write must not take sb_writers - unexport __kernel_write