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    Subject[PATCH 3.13.y-ckt 058/138] ocfs2/dlm: clear refmap bit of recovery lock while doing local recovery cleanup
    Date
    3.13.11-ckt36 -stable review patch.  If anyone has any objections, please let me know.

    ---8<------------------------------------------------------------

    From: xuejiufei <xuejiufei@huawei.com>

    commit c95a51807b730e4681e2ecbdfd669ca52601959e upstream.

    When recovery master down, dlm_do_local_recovery_cleanup() only remove
    the $RECOVERY lock owned by dead node, but do not clear the refmap bit.
    Which will make umount thread falling in dead loop migrating $RECOVERY
    to the dead node.

    Signed-off-by: xuejiufei <xuejiufei@huawei.com>
    Reviewed-by: Joseph Qi <joseph.qi@huawei.com>
    Cc: Mark Fasheh <mfasheh@suse.de>
    Cc: Joel Becker <jlbec@evilplan.org>
    Cc: Junxiao Bi <junxiao.bi@oracle.com>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
    Signed-off-by: Kamal Mostafa <kamal@canonical.com>
    ---
    fs/ocfs2/dlm/dlmrecovery.c | 2 ++
    1 file changed, 2 insertions(+)

    diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
    index fe29f79..4b93d96 100644
    --- a/fs/ocfs2/dlm/dlmrecovery.c
    +++ b/fs/ocfs2/dlm/dlmrecovery.c
    @@ -2332,6 +2332,8 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node)
    break;
    }
    }
    + dlm_lockres_clear_refmap_bit(dlm, res,
    + dead_node);
    spin_unlock(&res->spinlock);
    continue;
    }
    --
    2.7.0
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