LU-5287 export: hold exp_lock when modify exp_flags

[fs/lustre-release.git] / lustre / ldlm / ldlm_lib.c

diff --git a/lustre/ldlm/ldlm_lib.c b/lustre/ldlm/ldlm_lib.c
index 0c878dc..0eb34d7 100644 (file)
--- a/lustre/ldlm/ldlm_lib.c
+++ b/lustre/ldlm/ldlm_lib.c
@@ -1068,8 +1068,10 @@ dont_check_exports:
         * OBD_CONNECT_MNE_SWAB flag around forever, just so long as we need
         * interop with unpatched 2.2 clients.  For newer clients, servers
         * will never do MNE swabbing, let the client handle that.  LU-1644 */
         * OBD_CONNECT_MNE_SWAB flag around forever, just so long as we need
         * interop with unpatched 2.2 clients.  For newer clients, servers
         * will never do MNE swabbing, let the client handle that.  LU-1644 */

+       spin_lock(&export->exp_lock);

        export->exp_need_mne_swab = !ptlrpc_req_need_swab(req) &&
                        !(data->ocd_connect_flags & OBD_CONNECT_MNE_SWAB);
        export->exp_need_mne_swab = !ptlrpc_req_need_swab(req) &&
                        !(data->ocd_connect_flags & OBD_CONNECT_MNE_SWAB);

+       spin_unlock(&export->exp_lock);

 #endif
 
         LASSERT(target->u.obt.obt_magic == OBT_MAGIC);
 #endif
 
         LASSERT(target->u.obt.obt_magic == OBT_MAGIC);