Hi, This series builds to adding support for a different way of doing provided buffers. The interesting bits here are patch 3, which also has some performance numbers an an explanation of it. Patch 1 adds NOP support for provided buffers, just so that we can benchmark the last change. Patch 2 just abstracts out the pinning code. Patch 3 finally adds the feature. This passes the full liburing suite, and various test cases I adopted to use ring provided buffers. v5: - Minor cleanups - Rebase on current branch with prep patches folded in Can also be found in my git repo, for-5.19/io_uring-pbuf branch: https://git.kernel.dk/cgit/linux-block/log/?h=for-5.19/io_uring-pbuf fs/io_uring.c | 324 +++++++++++++++++++++++++++++----- include/uapi/linux/io_uring.h | 28 +++ 2 files changed, 312 insertions(+), 40 deletions(-) -- Jens Axboe
