LU-4008 mdt: Use actual size for layout lock intents

The intent for layout looks up the size of the lov xattr. That size
should be used for the reply buffer instead of the maximum size ever
seen.

Signed-off-by: Matt Ezell <ezellma@ornl.gov>
Signed-off-by: James Simmons <uja.ornl@gmail.com>
Change-Id: I9550aa47313502288b018f5cac0d59931ce76d21
Reviewed-on: http://review.whamcloud.com/9571
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>

diff --git a/lustre/mdt/mdt_handler.c b/lustre/mdt/mdt_handler.c
index abb526a..13ffb22 100644 (file)
--- a/lustre/mdt/mdt_handler.c
+++ b/lustre/mdt/mdt_handler.c
@@ -3279,8 +3279,7 @@ static int mdt_intent_layout(enum mdt_it_code opcode,
        struct layout_intent *layout;
        struct lu_fid *fid;
        struct mdt_object *obj = NULL;
-       struct md_object *child = NULL;
-       int rc;
+       int rc = 0;
        ENTRY;
 
        if (opcode != MDT_IT_LAYOUT) {
@@ -3297,11 +3296,10 @@ static int mdt_intent_layout(enum mdt_it_code opcode,
                RETURN(PTR_ERR(obj));
 
        if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
-               child = mdt_object_child(obj);
-
                /* get the length of lsm */
-               rc = mo_xattr_get(info->mti_env, child, &LU_BUF_NULL,
-                                 XATTR_NAME_LOV);
+               rc = mdt_attr_get_eabuf_size(info, obj);
+               if (rc < 0)
+                       RETURN(rc);
 
                if (rc > info->mti_mdt->mdt_max_mdsize)
                        info->mti_mdt->mdt_max_mdsize = rc;
@@ -3310,8 +3308,7 @@ static int mdt_intent_layout(enum mdt_it_code opcode,
        mdt_object_put(info->mti_env, obj);
 
        (*lockp)->l_lvb_type = LVB_T_LAYOUT;
-       req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
-                       ldlm_lvbo_size(*lockp));
+       req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER, rc);
        rc = req_capsule_server_pack(info->mti_pill);
        if (rc != 0)
                RETURN(-EINVAL);