Please try this one: --- >From 5e86146296fbcd7593da1d9d39b9685a5e6b83be Mon Sep 17 00:00:00 2001 From: Christoph Hellwig <hch@xxxxxx> Date: Sat, 11 Jul 2020 08:46:10 +0200 Subject: debugfs: add a proxy stub for ->read_iter debugfs registrations typically go through a set of proxy ops to deal with refcounting, which need to support every method that can be supported. Add ->read_iter to the proxy ops to prepare for seq_file to be switch to ->read_iter. Reported-by: Jon Hunter <jonathanh@xxxxxxxxxx> Signed-off-by: Christoph Hellwig <hch@xxxxxx> --- fs/debugfs/file.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c index 8ba32c2feb1b73..dcd7bdaf67417f 100644 --- a/fs/debugfs/file.c +++ b/fs/debugfs/file.c @@ -231,6 +231,10 @@ FULL_PROXY_FUNC(read, ssize_t, filp, loff_t *ppos), ARGS(filp, buf, size, ppos)); +FULL_PROXY_FUNC(read_iter, ssize_t, iocb->ki_filp, + PROTO(struct kiocb *iocb, struct iov_iter *iter), + ARGS(iocb, iter)); + FULL_PROXY_FUNC(write, ssize_t, filp, PROTO(struct file *filp, const char __user *buf, size_t size, loff_t *ppos), @@ -286,6 +290,8 @@ static void __full_proxy_fops_init(struct file_operations *proxy_fops, proxy_fops->llseek = full_proxy_llseek; if (real_fops->read) proxy_fops->read = full_proxy_read; + if (real_fops->read_iter) + proxy_fops->read_iter = full_proxy_read_iter; if (real_fops->write) proxy_fops->write = full_proxy_write; if (real_fops->poll) -- 2.26.2
