X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Finclude%2Flustre_mdc.h;h=7b09164da97d4c1feba1934f57cb51d76ed70767;hp=c0f070f466adefd8eadae1a7fae4375db0da3285;hb=e709e661395af42471f5ecf3c87f2fa1d3031fbb;hpb=9d9db87afc80ed3e98e1fc05b3ad97a89ebf577a

diff --git a/lustre/include/lustre_mdc.h b/lustre/include/lustre_mdc.h
index c0f070f..7b09164 100644
--- a/lustre/include/lustre_mdc.h
+++ b/lustre/include/lustre_mdc.h
@@ -165,28 +165,42 @@ static inline void mdc_put_rpc_lock(struct mdc_rpc_lock *lck,
 	EXIT;
 }
 
-/* Update the maximum observed easize and cookiesize.  The default easize
- * and cookiesize is initialized to the minimum value but allowed to grow
- * up to a single page in size if required to handle the common case.
+/**
+ * Update the maximum possible easize and cookiesize.
+ *
+ * The values are learned from ptlrpc replies sent by the MDT.  The
+ * default easize and cookiesize is initialized to the minimum value but
+ * allowed to grow up to a single page in size if required to handle the
+ * common case.
+ *
+ * \see client_obd::cl_default_mds_easize and
+ * client_obd::cl_default_mds_cookiesize
+ *
+ * \param[in] exp	export for MDC device
+ * \param[in] body	body of ptlrpc reply from MDT
+ *
  */
 static inline void mdc_update_max_ea_from_body(struct obd_export *exp,
 					       struct mdt_body *body)
 {
 	if (body->mbo_valid & OBD_MD_FLMODEASIZE) {
 		struct client_obd *cli = &exp->exp_obd->u.cli;
+		__u32 def_easize;
+		__u32 def_cookiesize;
 
-		if (cli->cl_max_mds_easize < body->mbo_max_mdsize) {
+		if (cli->cl_max_mds_easize < body->mbo_max_mdsize)
 			cli->cl_max_mds_easize = body->mbo_max_mdsize;
-			cli->cl_default_mds_easize =
-				min_t(__u32, body->mbo_max_mdsize,
-				      PAGE_CACHE_SIZE);
-		}
-		if (cli->cl_max_mds_cookiesize < body->mbo_max_cookiesize) {
+
+		def_easize = min_t(__u32, body->mbo_max_mdsize,
+				   OBD_MAX_DEFAULT_EA_SIZE);
+		cli->cl_default_mds_easize = def_easize;
+
+		if (cli->cl_max_mds_cookiesize < body->mbo_max_cookiesize)
 			cli->cl_max_mds_cookiesize = body->mbo_max_cookiesize;
-			cli->cl_default_mds_cookiesize =
-			    min_t(__u32, body->mbo_max_cookiesize,
-				  PAGE_CACHE_SIZE);
-		}
+
+		def_cookiesize = min_t(__u32, body->mbo_max_cookiesize,
+				       OBD_MAX_DEFAULT_COOKIE_SIZE);
+		cli->cl_default_mds_cookiesize = def_cookiesize;
 	}
 }