[dm-devel] [PATCH 1/7] lib/vsprintf: add %*pg format specifier

[Joe Perches]

On Tue, 2015-03-31 at 10:06 -0700, Joe Perches wrote:
> On Tue, 2015-03-31 at 20:01 +0400, Dmitry Monakhov wrote:
> > This allow to directly print block_device name.
> > Currently one should use bdevname() with temporal char buf[BDEVNAME_SIZE].
> > This is very ineffective because bloat stack usage for deep IO call-traces

Perhaps it would be useful to update the disk_name/bdevname
functions to take a buffer length along with the char * so
that buffer overflows could not occur.

That would also allow this function to use bdevname directly.