[PATCH] raw: deprecate the raw driver

[Christoph Hellwig]

The raw driver has been replaced by O_DIRECT support on the block device
in 2002.  Deprecate it to prepare for removal in a few kernel releases.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---

Jens, I wonder if we can sneak this into 5.9 to have a longer deprecation
period?

 drivers/char/raw.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 380bf518338ef7..ccf5bd528642da 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -63,6 +63,11 @@ static int raw_open(struct inode *inode, struct file *filp)
 		return 0;
 	}
 
+	pr_warn_ratelimited(
+		"process %s (pid %d) is using the deprecated raw device\n"
+		"support will be removed in Linux 5.14.\n",
+		current->comm, current->pid);
+
 	mutex_lock(&raw_mutex);
 
 	/*
-- 
2.28.0