1 // SPDX-License-Identifier: GPL-2.0
6 #include <linux/nospec.h>
10 #define IO_NOTIF_SPLICE_BATCH 32
12 struct io_notif_data {
14 struct ubuf_info uarg;
15 unsigned long account_pages;
21 struct io_kiocb *io_alloc_notif(struct io_ring_ctx *ctx);
22 void io_notif_set_extended(struct io_kiocb *notif);
24 static inline struct io_notif_data *io_notif_to_data(struct io_kiocb *notif)
26 return io_kiocb_to_cmd(notif, struct io_notif_data);
29 static inline void io_notif_flush(struct io_kiocb *notif)
30 __must_hold(¬if->ctx->uring_lock)
32 struct io_notif_data *nd = io_notif_to_data(notif);
34 /* drop slot's master ref */
35 if (refcount_dec_and_test(&nd->uarg.refcnt))
36 io_req_task_work_add(notif);
39 static inline int io_notif_account_mem(struct io_kiocb *notif, unsigned len)
41 struct io_ring_ctx *ctx = notif->ctx;
42 struct io_notif_data *nd = io_notif_to_data(notif);
43 unsigned nr_pages = (len >> PAGE_SHIFT) + 2;
47 ret = __io_account_mem(ctx->user, nr_pages);
50 nd->account_pages += nr_pages;