git: kernel - Adjust ssb_space_prealloc() use cases

[Sepherosa Ziehau]

Great!

Thanks,
sephe

On Sat, Jul 19, 2014 at 12:37 AM, Matthew Dillon
<dillon at crater.dragonflybsd.org> wrote:
>
> commit a5e9382686e31add8639d621f888ae44457bdda2
> Author: Matthew Dillon <dillon at apollo.backplane.com>
> Date:   Fri Jul 18 09:32:46 2014 -0700
>
>     kernel - Adjust ssb_space_prealloc() use cases
>
>     * Add two flags to the signalsockbuf ssb_flags field.
>
>       SSB_PREALLOC  - Indicates that data preallocation tracking is being used
>       SSB_STOPSUPP      - Indicates that SSB_STOP flow control is being used
>
>     * unix domain sockets set SSB_STOPSUPP, tcp and sctp sockets
>       set SSB_PREALLOC.
>
>     * sendfile() requires that either SSB_PREALLOC or SSB_STOPSUPP be specified.
>
>     * Code now conditionalizes the use of ssb_space() vs ssb_space_prealloc()
>       based on the presence of the SSB_PREALLOC flag.
>
>     Reported-by: sephe
>
> Summary of changes:
>  sys/kern/uipc_socket2.c   |  9 +++++++--
>  sys/kern/uipc_syscalls.c  | 38 ++++++++++++++++++++++++++++++--------
>  sys/kern/uipc_usrreq.c    | 12 +++++++++++-
>  sys/netinet/sctp_usrreq.c |  3 +++
>  sys/netinet/tcp_usrreq.c  |  4 ++--
>  sys/sys/socketvar.h       |  2 ++
>  6 files changed, 55 insertions(+), 13 deletions(-)
>
> http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/a5e9382686e31add8639d621f888ae44457bdda2
>
>
> --
> DragonFly BSD source repository



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