LU-15117 ofd: don't take lock for dt_bufs_get()

[fs/lustre-release.git] / lustre / osd-zfs / osd_io.c

diff --git a/lustre/osd-zfs/osd_io.c b/lustre/osd-zfs/osd_io.c
index f267367..74644c9 100644 (file)
--- a/lustre/osd-zfs/osd_io.c
+++ b/lustre/osd-zfs/osd_io.c
@@ -589,14 +589,18 @@ static int osd_bufs_get(const struct lu_env *env, struct dt_object *dt,
        struct osd_object *obj  = osd_dt_obj(dt);
        int                rc;
 
-       LASSERT(dt_object_exists(dt));
-       LASSERT(obj->oo_dn);
+       down_read(&obj->oo_guard);
+
+       if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
+               GOTO(out, rc = -ENOENT);
 
        if (rw & DT_BUFS_TYPE_WRITE)
                rc = osd_bufs_get_write(env, obj, offset, len, lnb, maxlnb);
        else
                rc = osd_bufs_get_read(env, obj, offset, len, lnb, maxlnb);
 
+out:
+       up_read(&obj->oo_guard);
        return rc;
 }