The volfile parser thread safe by guarding the parsing phase in a mutex. Thread safety becomes a problem when there are multiple glfs_t objects created by gfapi and all of them potentially parse the respective volfiles at the same time. Change-Id: I4376019c4956994b72397ab36e6ac3ce849797ec BUG: 1004519 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/5790 Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.org>