From 2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c Mon Sep 17 00:00:00 2001 From: Sang-Heon Jeon Date: Mon, 24 Aug 2026 01:18:14 +0900 Subject: coccinelle: alloc_cast: drop removed allocators - pci_alloc_consistent() and pci_zalloc_consistent() were removed by commit 7968778914e5 ("PCI: Remove the deprecated "pci-dma-compat.h" API") - kmem_alloc() was removed by commit f078d4ea8276 ("xfs: convert kmem_alloc() to kmalloc()") - kmem_zalloc() was removed by commit 10634530f7ba ("xfs: convert kmem_zalloc() to kzalloc()") - kmem_zone_alloc() and kmem_zone_zalloc() were removed by commit bae633a4a283 ("xfs: remove xfs_zone_{alloc,zalloc} helpers") So drop them from the rules. No functional change. Signed-off-by: Sang-Heon Jeon Signed-off-by: Julia Lawall --- io_uring/nop.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 io_uring/nop.c (limited to 'io_uring/nop.c') diff --git a/io_uring/nop.c b/io_uring/nop.c new file mode 100644 index 000000000..60ab19604 --- /dev/null +++ b/io_uring/nop.c @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include +#include +#include + +#include + +#include "io_uring.h" +#include "rsrc.h" +#include "nop.h" + +struct io_nop { + struct file *file; + int result; + int fd; + unsigned int flags; + __u64 extra1; + __u64 extra2; +}; + +#define NOP_FLAGS (IORING_NOP_INJECT_RESULT | IORING_NOP_FIXED_FILE | \ + IORING_NOP_FIXED_BUFFER | IORING_NOP_FILE | \ + IORING_NOP_TW | IORING_NOP_CQE32) + +int io_nop_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) +{ + struct io_nop *nop = io_kiocb_to_cmd(req, struct io_nop); + + nop->flags = READ_ONCE(sqe->nop_flags); + if (nop->flags & ~NOP_FLAGS) + return -EINVAL; + + if (nop->flags & IORING_NOP_INJECT_RESULT) + nop->result = READ_ONCE(sqe->len); + else + nop->result = 0; + if (nop->flags & IORING_NOP_FILE) + nop->fd = READ_ONCE(sqe->fd); + else + nop->fd = -1; + if (nop->flags & IORING_NOP_FIXED_FILE) + req->flags |= REQ_F_FIXED_FILE; + if (nop->flags & IORING_NOP_FIXED_BUFFER) + req->buf_index = READ_ONCE(sqe->buf_index); + if (nop->flags & IORING_NOP_CQE32) { + struct io_ring_ctx *ctx = req->ctx; + + if (!(ctx->flags & (IORING_SETUP_CQE32|IORING_SETUP_CQE_MIXED))) + return -EINVAL; + nop->extra1 = READ_ONCE(sqe->off); + nop->extra2 = READ_ONCE(sqe->addr); + } + return 0; +} + +int io_nop(struct io_kiocb *req, unsigned int issue_flags) +{ + struct io_nop *nop = io_kiocb_to_cmd(req, struct io_nop); + int ret = nop->result; + + if (nop->flags & IORING_NOP_FILE) { + if (req->flags & REQ_F_FIXED_FILE) + req->file = io_file_get_fixed(req, nop->fd, issue_flags); + else + req->file = io_file_get_normal(req, nop->fd); + if (!req->file) { + ret = -EBADF; + goto done; + } + } + if (nop->flags & IORING_NOP_FIXED_BUFFER) { + if (!io_find_buf_node(req, issue_flags)) + ret = -EFAULT; + } +done: + if (ret < 0) + req_set_fail(req); + if (nop->flags & IORING_NOP_CQE32) + io_req_set_res32(req, ret, 0, nop->extra1, nop->extra2); + else + io_req_set_res(req, ret, 0); + if (nop->flags & IORING_NOP_TW) { + req->io_task_work.func = io_req_task_complete; + io_req_task_work_add(req); + return IOU_ISSUE_SKIP_COMPLETE; + } + return IOU_COMPLETE; +} -- cgit v1.3.1