svn commit: r276750 - in head: share/man/man9 sys/contrib/ipfilter/netinet sys/dev/an sys/dev/bge sys/dev/ce sys/dev/cm sys/dev/cp sys/dev/cs sys/dev/ctau sys/dev/ed sys/dev/ex sys/dev/fe sys/dev/h...

[John-Mark Gurney]

Robert Watson wrote this message on Tue, Jan 06, 2015 at 12:59 +0000:
> Author: rwatson
> Date: Tue Jan  6 12:59:37 2015
> New Revision: 276750
> URL: https://svnweb.freebsd.org/changeset/base/276750
> 
> Log:
>   In order to reduce use of M_EXT outside of the mbuf allocator and
>   socket-buffer implementations, introduce a return value for MCLGET()
>   (and m_cljget() that underlies it) to allow the caller to avoid testing
>   M_EXT itself.  Update all callers to use the return value.
>   
>   With this change, very few network device drivers remain aware of
>   M_EXT; the primary exceptions lie in mbuf-chain pretty printers for
>   debugging, and in a few cases, custom mbuf and cluster allocation
>   implementations.
>   
>   NB: This is a difficult-to-test change as it touches many drivers for
>   which I don't have physical devices.  Instead we've gone for intensive
>   review, but further post-commit review would definitely be appreciated
>   to spot errors where changes could not easily be made mechanically,
>   but were largely mechanical in nature.

Shouldn't this come w/ a FreeBSD version bump for drivers to use?

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."