From: Vitaly Fertman <Vitaly.Fertman@sun.com>
Date: Thu, 26 Aug 2010 13:31:45 +0000 (+0400)
Subject: b=22476 grant_plan upper hard limit.
X-Git-Tag: 2.0.51.0~21
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=a12662ac983309c1d76abe002498074c6ca460b3;p=fs%2Flustre-release.git

b=22476 grant_plan upper hard limit.

i=johann
i=dmitry
---

diff --git a/lustre/ldlm/ldlm_pool.c b/lustre/ldlm/ldlm_pool.c
index 25fe64e..98b9215 100644
--- a/lustre/ldlm/ldlm_pool.c
+++ b/lustre/ldlm/ldlm_pool.c
@@ -238,6 +238,9 @@ static inline void ldlm_pool_recalc_grant_plan(struct ldlm_pool *pl)
         grant_step = ldlm_pool_t2gsp(pl->pl_recalc_period);
         grant_step = ((limit - granted) * grant_step) / 100;
         pl->pl_grant_plan = granted + grant_step;
+        limit = (limit * 5) >> 2;
+        if (pl->pl_grant_plan > limit)
+                pl->pl_grant_plan = limit;
 }
 
 /**
@@ -273,10 +276,6 @@ static inline void ldlm_pool_recalc_slv(struct ldlm_pool *pl)
          */
         slv_factor = (grant_usage << LDLM_POOL_SLV_SHIFT);
         do_div(slv_factor, limit);
-        if (2 * abs(granted - limit) > limit) {
-                slv_factor *= slv_factor;
-                slv_factor = dru(slv_factor, LDLM_POOL_SLV_SHIFT, round_up);
-        }
         slv = slv * slv_factor;
         slv = dru(slv, LDLM_POOL_SLV_SHIFT, round_up);