From a537c4ed5e3f8398f42241121ab18345260e2f29 Mon Sep 17 00:00:00 2001
From: fanyong <fanyong>
Date: Wed, 30 Apr 2008 17:23:56 +0000
Subject: [PATCH] Branch b1_6 b=15691 i=huanghua i=tappro

1) Prevent "ll_sa_wrong" from being increased repeatedly when hit ratio is low.
2) Remount client before sanity 123a to eliminate previous test effect.
---
 lustre/llite/statahead.c | 3 ++-
 lustre/tests/sanity.sh   | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/lustre/llite/statahead.c b/lustre/llite/statahead.c
index 2692b96..1e45dd9 100644
--- a/lustre/llite/statahead.c
+++ b/lustre/llite/statahead.c
@@ -908,7 +908,8 @@ void ll_statahead_exit(struct dentry *dentry, int result)
                         sbi->ll_sa_miss++;
                         sai->sai_miss++;
                         sai->sai_consecutive_miss++;
-                        if (sa_low_hit(sai)) {
+                        if (sa_low_hit(sai) &&
+                            sai->sai_thread.t_flags & SVC_RUNNING) {
                                 sbi->ll_sa_wrong++;
                                 CDEBUG(D_READA, "statahead for dir %.*s hit "
                                        "ratio too low: hit/miss %u/%u, "
diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index 0d37861..ddbb039 100644
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -4643,6 +4643,7 @@ test_123a() { # was test 123, statahead(bug 11401)
                 log "testing on UP system. Performance may be not as good as expected."
         fi
 
+        remount_client $MOUNT
         mkdir -p $DIR/$tdir
         error=0
         NUMFREE=`df -i -P $DIR | tail -n 1 | awk '{ print $4 }'`
-- 
1.8.3.1