[RESEND PATCH v9 2/5] seq_buf: Export seq_buf_printf

From: Vaibhav Jain
Date: Tue Jun 02 2020 - 06:17:30 EST

'seq_buf' provides a very useful abstraction for writing to a string
buffer without needing to worry about it over-flowing. However even
though the API has been stable for couple of years now its still not
exported to kernel loadable modules limiting its usage.

Hence this patch proposes update to 'seq_buf.c' to mark
seq_buf_printf() which is part of the seq_buf API to be exported to
kernel loadable GPL modules. This symbol will be used in later parts
of this patch-set to simplify content creation for a sysfs attribute.

Cc: Piotr Maziarz <piotrx.maziarz@xxxxxxxxxxxxxxx>
Cc: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Acked-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
Signed-off-by: Vaibhav Jain <vaibhav@xxxxxxxxxxxxx>

* Added ack from Steven Rostedt

* None

* Updated the patch title [ Christoph Hellwig ]
* Updated patch description to replace confusing term 'external kernel
modules' to 'kernel lodable modules'.

* Added ack from Steven Rostedt

* New patch in the series
lib/seq_buf.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/lib/seq_buf.c b/lib/seq_buf.c
index 4e865d42ab03..707453f5d58e 100644
--- a/lib/seq_buf.c
+++ b/lib/seq_buf.c
@@ -91,6 +91,7 @@ int seq_buf_printf(struct seq_buf *s, const char *fmt, ...)

return ret;