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Registered buffers pay the cost once during registration then reuse the pre-pinned pages, which helps reduce the per-op overhead. This is on top of commit 211ddde0823f in the iouring tree. Joanne Koong (2): io-uring: add io_uring_cmd_get_buffer_info() fuse: support io-uring registered buffers fs/fuse/dev_uring.c | 216 ++++++++++++++++++++++++++++++++--- fs/fuse/dev_uring_i.h | 17 ++- include/linux/io_uring/cmd.h | 2 + io_uring/rsrc.c | 21 ++++ 4 files changed, 236 insertions(+), 20 deletions(-) -- 2.47.3