LU-5556 target: limit bulk transfer time

[fs/lustre-release.git] / lustre / ost / ost_handler.c

diff --git a/lustre/ost/ost_handler.c b/lustre/ost/ost_handler.c
index ae982d0..ed4a5fb 100644 (file)
--- a/lustre/ost/ost_handler.c
+++ b/lustre/ost/ost_handler.c
@@ -2010,9 +2010,12 @@ static int ost_rw_hpreq_lock_match(struct ptlrpc_request *req,
        if (!ostid_res_name_eq(&ioo->ioo_oid, &lock->l_resource->lr_name))
                RETURN(0);
 
-        mode = LCK_PW;
-        if (opc == OST_READ)
-                mode |= LCK_PR;
+       /* a bulk write can only hold a reference on a PW extent lock */
+       mode = LCK_PW;
+       if (opc == OST_READ)
+               /* whereas a bulk read can be protected by either a PR or PW
+                * extent lock */
+               mode |= LCK_PR;
         if (!(lock->l_granted_mode & mode))
                 RETURN(0);