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);
23 static inline struct io_notif_data *io_notif_to_data(struct io_kiocb *notif)
25 return io_kiocb_to_cmd(notif, struct io_notif_data);
28 static inline void io_notif_flush(struct io_kiocb *notif)
29 __must_hold(¬if->ctx->uring_lock)
31 struct io_notif_data *nd = io_notif_to_data(notif);
33 /* drop slot's master ref */
34 if (refcount_dec_and_test(&nd->uarg.refcnt))
35 io_req_task_work_add(notif);
38 static inline int io_notif_account_mem(struct io_kiocb *notif, unsigned len)
40 struct io_ring_ctx *ctx = notif->ctx;
41 struct io_notif_data *nd = io_notif_to_data(notif);
42 unsigned nr_pages = (len >> PAGE_SHIFT) + 2;
46 ret = __io_account_mem(ctx->user, nr_pages);
49 nd->account_pages += nr_pages;