On 2025-09-07 at 20:54 +1000, Alice Ryhl <alicer...@google.com> wrote... > On Wed, Aug 27, 2025 at 06:20:01PM +1000, Alistair Popple wrote: > > From: Joel Fernandes <joelagn...@nvidia.com> > > > > A data structure that can be used to write across multiple slices which > > may be out of order in memory. This lets SBuffer user correctly and > > safely write out of memory order, without error-prone tracking of > > pointers/offsets. > > > > let mut buf1 = [0u8; 3]; > > let mut buf2 = [0u8; 5]; > > let mut sbuffer = SBuffer::new([&mut buf1[..], &mut buf2[..]]); > > > > let data = b"hellowo"; > > let result = sbuffer.write(data); > > > > An internal conversion of gsp.rs to use this resulted in a nice -ve delta: > > gsp.rs: 37 insertions(+), 99 deletions(-) > > > > Co-developed-by: Alistair Popple <apop...@nvidia.com> > > Signed-off-by: Alistair Popple <apop...@nvidia.com> > > Signed-off-by: Joel Fernandes <joelagn...@nvidia.com> > > This seems like duplication of the logic in rust/kernel/iov_iter.rs [1].
Conceptually I guess there is some overlap. The thing that's different here is we don't have any C version of the iovec struct or iov_iter, and AFAICT [1] doesn't provide any way of creating one from within Rust code. > Alice > > [1]: https://lore.kernel.org/r/20250822-iov-iter-v5-0-6ce4819c2...@google.com
