[dm-devel] [RFC] [PATCH 0/7] fs: add blkdev name format specifier

[Jens Axboe]

On 03/31/2015 10:01 AM, Dmitry Monakhov wrote:
> Currently in order to print block_device name one should  use blkdev() helper
> which requires temproral buffer of size BDEVNAME_SIZE (32bytes). This is very
> ineffective because result in stack usage bloating for deep IO call traces where
> stack usage is close to maximum values.
>
> It is reasonable to introduce dedicated format specifier for block_device name,
> unfortunately "%pb", "%pB", "%pd" and "%pD" are already reserved for other data types
> I've pick "%pg" ala geometry. If some one want to offer sane spacifier name
> please let me know.
>
> Since this is RFC version I've pick rough patch split policy (based on subsystem).
> Please let me know if patchset should be split in different way.

I think this is looks good, nice improvement. I can take the lib and 
block parts, Al can pick up the fs bits.

-- 
Jens Axboe