固定GMAC1 网卡名为 eth3

hc

2024-11-15 a46a1ad097419aeea7350987dd95230f50d90392

 kernel/fs/eventfd.c
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@@ -266,17 +266,17 @@
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 	return sizeof(ucnt);
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 }
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-static ssize_t eventfd_write(struct file *file, const char __user *buf, size_t count,
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-			     loff_t *ppos)
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+static ssize_t eventfd_write(struct kiocb *iocb, struct iov_iter *from)
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 {
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+	struct file *file = iocb->ki_filp;
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 	struct eventfd_ctx *ctx = file->private_data;
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 	ssize_t res;
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 	__u64 ucnt;
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 	DECLARE_WAITQUEUE(wait, current);
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-	if (count < sizeof(ucnt))
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+	if (iov_iter_count(from) < sizeof(ucnt))
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 		return -EINVAL;
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-	if (copy_from_user(&ucnt, buf, sizeof(ucnt)))
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+	if (copy_from_iter(&ucnt, sizeof(ucnt), from) != sizeof(ucnt))
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 		return -EFAULT;
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 	if (ucnt == ULLONG_MAX)
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 		return -EINVAL;
..
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@@ -333,7 +333,7 @@
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 	.release	= eventfd_release,
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 	.poll		= eventfd_poll,
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 	.read_iter	= eventfd_read,
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-	.write		= eventfd_write,
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+	.write_iter	= eventfd_write,
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 	.llseek		= noop_llseek,
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 };
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