[Sheepdog] [PATCH v2] Use RCU to avoid race on current_vnode_info

[Liu Yuan]

On 05/06/2012 06:43 AM, Yunkai Zhang wrote:

> We have discussed this issue in maillist:
> http://lists.wpkg.org/pipermail/sheepdog/2012-May/003315.html
> 
> This patch depends on a third-party usersapce RCU library, we
> can get it from here: http://lttng.org/urcu.
> 
> Signed-off-by: Yunkai Zhang <yunkai.me at gmail.com>
> ---
>  configure.ac       |    3 ++-
>  sheep/Makefile.am  |    7 +++++--
>  sheep/group.c      |   46 +++++++++++++++++++++++++++++++++-------------
>  sheep/sdnet.c      |    7 +++++--
>  sheep/sheep.c      |    5 +++++
>  sheep/sheep_priv.h |    4 +---
>  sheep/work.c       |    3 +++
>  7 files changed, 54 insertions(+), 21 deletions(-)
> 
> diff --git a/configure.ac b/configure.ac
> index 7a5eedf..b7af48f 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -77,6 +77,7 @@ AM_MISSING_PROG(AUTOM4TE, autom4te, $missing_dir)
>  
>  # Checks for libraries.
>  AC_CHECK_LIB([socket], [socket])
> +PKG_CHECK_MODULES([liburcu],[liburcu])


Use AC_CHECK_LIB()

I don't review the patch yet, I'll give it a look later.

Thanks,
Yuan