Re: [PATCH 3/4] printk/btrfs: Handle more message headers

[David Sterba]

On Thu, Oct 27, 2016 at 05:52:53PM +0200, Petr Mladek wrote:
> The commit 4bcc595ccd80decb4245096e ("printk: reinstate KERN_CONT for
> printing continuation lines") allows to define more message headers
> for a single message. The motivation is that continuous lines might
> get mixed. Therefore it make sense to define the right log level
> for every piece of a cont line.
> 
> The current btrfs_printk() macros do not support continuous lines at
> the moment.  But better be prepared for a custom messages and avoid
> potential "lvl" buffer overflow.

I don't think we'll want to support continued lines. The macros just
print additional information about the filesystem and the message is
supposed to be on one line. If there's multi-line string, the raw printk
calls are used (and currently only for debugging purposes).

Acked-by: David Sterba <dsterba@xxxxxxxx>