[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 #29 from Anand Avati <aavati at redhat.com> ---
COMMIT: http://review.gluster.org/9922 committed in master by Kaushal M
(kaushal at redhat.com) 
------
commit 1250003956bc9fe7f030f0541f1c823cb282a07a
Author: Kaushal M <kaushal at redhat.com>
Date:   Tue Mar 17 12:06:25 2015 +0530

    glusterd: Remove compilation warning

    In glusterd_peerinfo_destroy, cast the passed 'strcut rcu_head *'
    pointer to 'gd_rcu_head *' before use in caa_container_of() to prevent
    the incompatible-pointer compilation warning.

    Also, refactor peerinfo->head to peerinfo->rcu_head to reduce confusion
    when reading code.

    This change was developed on the git branch at [1]. This commit is a
    combination of the following commits on the development branch.
      aa4a0bc Rename peerinfo->head to peerinfo->rcu_head
      c79144b Cast struct rcu_head * to gd_rcu_head * to prevent warning
      1d222c3 More head -> rcu_head renames

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

    BUG: 1191030
    Change-Id: I7ede02090413839563ce44fdf6289697b28777e7
    Signed-off-by: Kaushal M <kaushal at redhat.com>
    Reviewed-on: http://review.gluster.org/9922
    Reviewed-by: Atin Mukherjee <amukherj at redhat.com>
    Tested-by: Gluster Build System <jenkins at build.gluster.com>

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