diff options
| author | Ming Lei <ming.lei@redhat.com> | 2025-08-21 12:02:06 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-08-24 11:41:12 -0600 |
| commit | d589bcddaa3f8b1668499c3f0466863df3abe37a (patch) | |
| tree | 9adb16da4b9ba04646921b785f3e24c8a350f22c /include/linux | |
| parent | fe524b06843c19cf8d0025b644d56c4c31e60bc9 (diff) | |
io-uring: move `struct io_br_sel` into io_uring_types.h
Move `struct io_br_sel` into io_uring_types.h and prepare for supporting
provided buffer on uring_cmd.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250821040210.1152145-2-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/io_uring_types.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/io_uring_types.h b/include/linux/io_uring_types.h index 1d33984611bc..9c6c548f43f5 100644 --- a/include/linux/io_uring_types.h +++ b/include/linux/io_uring_types.h @@ -86,6 +86,25 @@ struct io_mapped_region { }; /* + * Return value from io_buffer_list selection, to avoid stashing it in + * struct io_kiocb. For legacy/classic provided buffers, keeping a reference + * across execution contexts are fine. But for ring provided buffers, the + * list may go away as soon as ->uring_lock is dropped. As the io_kiocb + * persists, it's better to just keep the buffer local for those cases. + */ +struct io_br_sel { + struct io_buffer_list *buf_list; + /* + * Some selection parts return the user address, others return an error. + */ + union { + void __user *addr; + ssize_t val; + }; +}; + + +/* * Arbitrary limit, can be raised if need be */ #define IO_RINGFD_REG_MAX 16 |