kernel/linux.git/io_uring/advise.c, branch v6.12.80

io_uring/advise: support 64-bit lengths

2024-06-16T20:54:55+00:00

The existing fadvise/madvise support only supports 32-bit lengths. Add support for 64-bit lengths, enabled by the application setting sqe->off rather than sqe->len for the length. If sqe->len is set, then that is used as the 32-bit length. If sqe->len is zero, then sqe->off is read for full 64-bit support. Older kernels will return -EINVAL if 64-bit support isn't available. Fixes: 4840e418c2fc ("io_uring: add IORING_OP_FADVISE") Fixes: c1ca757bd6f4 ("io_uring: add IORING_OP_MADVISE") Reported-by: Stefan Signed-off-by: Jens Axboe

io_uring: always go async for unsupported fadvise flags

2023-01-29T22:18:26+00:00

No point in issuing -> return -EAGAIN -> go async, when it can be done upfront. Signed-off-by: Dylan Yudaken Link: https://lore.kernel.org/r/20230127135227.3646353-4-dylany@meta.com Signed-off-by: Jens Axboe

io_uring: for requests that require async, force it

2023-01-29T22:18:26+00:00

Some requests require being run async as they do not support non-blocking. Instead of trying to issue these requests, getting -EAGAIN and then queueing them for async issue, rather just force async upfront. Add WARN_ON_ONCE to make sure surprising code paths do not come up, however in those cases the bug would end up being a blocking io_uring_enter(2) which should not be critical. Signed-off-by: Dylan Yudaken Link: https://lore.kernel.org/r/20230127135227.3646353-3-dylany@meta.com Signed-off-by: Jens Axboe

io_uring: make io_kiocb_to_cmd() typesafe

2022-08-12T23:01:00+00:00

We need to make sure (at build time) that struct io_cmd_data is not casted to a structure that's larger. Signed-off-by: Stefan Metzmacher Link: https://lore.kernel.org/r/c024cdf25ae19fc0319d4180e2298bade8ed17b8.1660201408.git.metze@samba.org Signed-off-by: Jens Axboe

io_uring: kill extra io_uring_types.h includes

2022-07-25T00:39:14+00:00

io_uring/io_uring.h already includes io_uring_types.h, no need to include it every time. Kill it in a bunch of places, it prepares us for following patches. Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/94d8c943fbe0ef949981c508ddcee7fc1c18850f.1655384063.git.asml.silence@gmail.com Signed-off-by: Jens Axboe

io_uring: split out fadvise/madvise operations

2022-07-25T00:39:11+00:00

Signed-off-by: Jens Axboe