Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
authored by
Ming Lei
and committed by
Jens Axboe
d589bcdd
fe524b06
+19
-18
+19
include/linux/io_uring_types.h
+19
include/linux/io_uring_types.h
···
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};
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/*
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* Return value from io_buffer_list selection, to avoid stashing it in
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* struct io_kiocb. For legacy/classic provided buffers, keeping a reference
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* across execution contexts are fine. But for ring provided buffers, the
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* list may go away as soon as ->uring_lock is dropped. As the io_kiocb
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* persists, it's better to just keep the buffer local for those cases.
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*/
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struct io_br_sel {
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struct io_buffer_list *buf_list;
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/*
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* Some selection parts return the user address, others return an error.
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*/
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union {
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void __user *addr;
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ssize_t val;
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};
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};
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+
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+
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/*
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* Arbitrary limit, can be raised if need be
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*/
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#define IO_RINGFD_REG_MAX 16
-18
io_uring/kbuf.h
-18
io_uring/kbuf.h
···
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unsigned short partial_map;
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};
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-
/*
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* Return value from io_buffer_list selection, to avoid stashing it in
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* struct io_kiocb. For legacy/classic provided buffers, keeping a reference
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* across execution contexts are fine. But for ring provided buffers, the
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* list may go away as soon as ->uring_lock is dropped. As the io_kiocb
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* persists, it's better to just keep the buffer local for those cases.
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*/
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struct io_br_sel {
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struct io_buffer_list *buf_list;
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/*
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* Some selection parts return the user address, others return an error.
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*/
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union {
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void __user *addr;
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ssize_t val;
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};
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};
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struct io_br_sel io_buffer_select(struct io_kiocb *req, size_t *len,
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unsigned buf_group, unsigned int issue_flags);
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int io_buffers_select(struct io_kiocb *req, struct buf_sel_arg *arg,