Branch b1_8_gate

Add ChangeLog entry.
b=11817

diff --git a/lustre/ChangeLog b/lustre/ChangeLog
index 33d18fe..c2a1547 100644 (file)
--- a/lustre/ChangeLog
+++ b/lustre/ChangeLog
@@ -73,7 +73,7 @@ Severity   : major
 Bugzilla   : 16750
 Description: service mount cannot take device name with ":"
 Details    : Only when device name contains ":/" will mount treat it as
-             client mount.
+            client mount.
 
 Severity   : normal
 Bugzilla   : 15927
@@ -551,6 +551,13 @@ Description: assertion failure in ldlm_handle2lock()
 Details    : fix a race between class_handle_unhash() and class_handle2object()
             introduced in lustre 1.6.5 by bug 13622.
 
+Severity   : enhancement
+Bugzilla   : 11817
+Description: superblock lock contention with many SMP cores on one client
+Details    : several client filesystem locks were highly contended on SMP
+            NUMA systems with 8 or more cores.  Per-CPU datastructures
+            and more efficient locking implemented to reduce contention.
+
 Severity   : minor
 Frequency  : rare
 Bugzilla   : 12755
@@ -2218,10 +2225,10 @@ Details    : Lov_mds_md was not free in an error handler in mds_create_object.
             be freed no matter whether fsfilt_commit success or not.
 
 Severity   : minor
-Frequency  : only with huge numbers of clients
+Frequency  : only with large numbers of cores on a single node
 Bugzilla   : 11817
 Description: Prevents from taking the superblock lock in llap_from_page for
-            a soon died page.
+            a soon killed page.
 Details    : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
             for llap_from_page call in ll_removepage() prevents from taking
             the superblock lock for a soon died page.