LU-13383 ofd: lazy atime update

[fs/lustre-release.git] / lustre / osc / osc_object.c

diff --git a/lustre/osc/osc_object.c b/lustre/osc/osc_object.c
index f092577..a2f840f 100644 (file)
--- a/lustre/osc/osc_object.c
+++ b/lustre/osc/osc_object.c
@@ -379,7 +379,12 @@ static void osc_req_attr_set(const struct lu_env *env, struct cl_object *obj,
                oa->o_mtime = lvb->lvb_mtime;
                oa->o_valid |= OBD_MD_FLMTIME;
        }
-       if ((flags & OBD_MD_FLATIME) != 0) {
+       /* XXX:
+        * I don't understand this part, what for OSC resets atime just
+        * set by VVP layer to 0 so that OST gets 0 instead of actual
+        * atime, bzzz. please inspect this place with extra care.
+        */
+       if ((flags & OBD_MD_FLATIME) && lvb->lvb_atime > oa->o_atime) {
                oa->o_atime = lvb->lvb_atime;
                oa->o_valid |= OBD_MD_FLATIME;
        }