staging: lustre: clio: sync write should update mtime

Sync write should update m/ctime promptly, otherwise, stale m/ctime
could be updated on the OST object by the sync write RPC.

Signed-off-by: Niu Yawei <yawei.niu@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7310
Reviewed-on: http://review.whamcloud.com/21063
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/lustre/osc/osc_io.c b/drivers/staging/lustre/lustre/osc/osc_io.c
index 38f7424..0b4cc42 100644 (file)
--- a/drivers/staging/lustre/lustre/osc/osc_io.c
+++ b/drivers/staging/lustre/lustre/osc/osc_io.c
@@ -210,6 +210,18 @@ static int osc_io_submit(const struct lu_env *env,
        if (queued > 0)
                result = osc_queue_sync_pages(env, osc, &list, cmd, brw_flags);
 
+       /* Update c/mtime for sync write. LU-7310 */
+       if (qout->pl_nr > 0 && !result) {
+               struct cl_attr *attr = &osc_env_info(env)->oti_attr;
+               struct cl_object *obj = ios->cis_obj;
+
+               cl_object_attr_lock(obj);
+               attr->cat_mtime = LTIME_S(CURRENT_TIME);
+               attr->cat_ctime = attr->cat_mtime;
+               cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME);
+               cl_object_attr_unlock(obj);
+       }
+
        CDEBUG(D_INFO, "%d/%d %d\n", qin->pl_nr, qout->pl_nr, result);
        return qout->pl_nr > 0 ? 0 : result;
 }