fuse: Add io-uring sqe commit and fetch support

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This adds support for fuse request completion through ring SQEs
(FUSE_URING_CMD_COMMIT_AND_FETCH handling). After committing
the ring entry it becomes available for new fuse requests.
Handling of requests through the ring (SQE/CQE handling)
is complete now.

Fuse request data are copied through the mmaped ring buffer,
there is no support for any zero copy yet.

Signed-off-by: Bernd Schubert <bschubert@ddn.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com> # io_uring
Reviewed-by: Luis Henriques <luis@igalia.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

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Bernd Schubert 2025-01-20 02:29:03 +01:00 • committed by Miklos Szeredi

parent 3821336530

commit c090c8abae

3 changed files with 457 additions and 0 deletions

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441

fs/fuse/dev_uring.c

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12

fs/fuse/dev_uring_i.h

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4

fs/fuse/fuse_i.h

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