// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/nospec.h>
#include <linux/hugetlb.h>
#include <linux/compat.h>
#include <linux/io_uring.h>
#include <linux/io_uring/cmd.h>
#include <uapi/linux/io_uring.h>
#include "filetable.h"
#include "io_uring.h"
#include "openclose.h"
#include "rsrc.h"
#include "memmap.h"
#include "register.h"
struct io_rsrc_update {
struct file *file;
u64 arg;
u32 nr_args;
u32 offset;
};
static struct io_rsrc_node *io_sqe_buffer_register(struct io_ring_ctx *ctx,
struct iovec *iov);
static int hpage_acct_ref(struct io_ring_ctx *ctx, struct page *hpage,
bool *acct_new)
{
unsigned long key = (unsigned long) hpage;
unsigned long count;
void *entry;
int ret;
lockdep_assert_held(&ctx->uring_lock);
entry = xa_load(&ctx->hpage_acct, key);
if (entry) {
*acct_new = false;
count = xa_to_value(entry) + 1;
} else {
ret = xa_reserve(&ctx->hpage_acct, ke
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