[Bugs] [Bug 1191030] Use rcu to protect concurrent access to data structures in GlusterD

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1191030



--- Comment #10 from Anand Avati <aavati at redhat.com> ---
COMMIT: http://review.gluster.org/9605 committed in master by Krishnan
Parthasarathi (kparthas at redhat.com) 
------
commit 30357bcfcd4a7c92e0e59ff58a26d48c8416c564
Author: Kaushal M <kaushal at redhat.com>
Date:   Tue Jan 6 15:12:59 2015 +0530

    build, glusterd: Add liburcu to build system

    This patch adds liburcu related checks to the build system and updates
    the spec file to require 'userspace-rcu'.

    liburcu >= 0.7 is required to build GlusterFS, but 0.8 and above is
    preferred. For cases when liburcu 0.7.x is the available version, some
    function definitions (currently just one) from liburcu-0.8.6 have been
    made available in /contrib/userspace-rcu/.

    This change was developed on the git branch at [1]. This commit is a
    combination of the following commits on the development branch.
      a5cd6bd Add userspace-rcu checks to configure.ac
      fe5ced3 Add URCU libs to glusterd libtool flags
      1e43302 Add local definition of cds_list_add_tail_rcu for
              liburcu-0.7
      98da755 Move local definition of cds_list_add_tail_rcu into contrib
      8c44dfd Update spec file to include userspace-rcu0466e33 Rename
      rculist-additional.h to rculist-extra.h
      947c7b3 Add rculist-extra.h to dist
      19f32ad Address review comments 9605/1

    [1]: https://github.com/kshlm/glusterfs/tree/urcu

    Change-Id: Ifbb617d0dacce8fa01214f894badb9d8cdcaf56f
    BUG: 1191030
    Signed-off-by: Kaushal M <kaushal at redhat.com>
    Reviewed-on: http://review.gluster.org/9605
    Tested-by: Gluster Build System <jenkins at build.gluster.com>
    Reviewed-by: Atin Mukherjee <amukherj at redhat.com>
    Reviewed-by: Niels de Vos <ndevos at redhat.com>
    Reviewed-by: Krishnan Parthasarathi <kparthas at redhat.com>
    Tested-by: Krishnan Parthasarathi <kparthas at redhat.com>

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