From: johann <johann>
Date: Tue, 22 Sep 2009 22:43:40 +0000 (+0000)
Subject: Branch b1_8
X-Git-Tag: v1_8_2_01~1^2~81
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=9580b6e8425127eac4d590ed291bd8dfa81621cb;p=fs%2Flustre-release.git

Branch b1_8
b=18505
i=adilger
i=andrew

Limit number of locks based on low mem on 32-bit systems.
---

diff --git a/lustre/include/liblustre.h b/lustre/include/liblustre.h
index 9ef8337..8571201 100644
--- a/lustre/include/liblustre.h
+++ b/lustre/include/liblustre.h
@@ -360,7 +360,8 @@ void get_random_bytes(void *ptr, int size);
 /* memory */
 
 /* memory size: used for some client tunables */
-#define num_physpages (256 * 1024) /* 1GB */
+#define num_physpages      (256 * 1024) /* 1GB */
+#define CFS_NUM_CACHEPAGES num_physpages
 
 static inline int copy_from_user(void *a,void *b, int c)
 {
diff --git a/lustre/ldlm/ldlm_pool.c b/lustre/ldlm/ldlm_pool.c
index fbe9641a..36abfa0 100644
--- a/lustre/ldlm/ldlm_pool.c
+++ b/lustre/ldlm/ldlm_pool.c
@@ -113,7 +113,7 @@
 /*
  * 50 ldlm locks for 1MB of RAM.
  */
-#define LDLM_POOL_HOST_L ((num_physpages >> (20 - CFS_PAGE_SHIFT)) * 50)
+#define LDLM_POOL_HOST_L ((CFS_NUM_CACHEPAGES >> (20 - CFS_PAGE_SHIFT)) * 50)
 
 /*
  * Maximal possible grant step plan in %.
diff --git a/lustre/mds/handler.c b/lustre/mds/handler.c
index 268f275..c85210f 100644
--- a/lustre/mds/handler.c
+++ b/lustre/mds/handler.c
@@ -2596,7 +2596,7 @@ static int mdt_setup(struct obd_device *obd, obd_count len, void *buf)
                 mds_max_threads = mds_min_threads = mds_num_threads;
         } else {
                 /* Base min threads on memory and cpus */
-                mds_min_threads = num_possible_cpus() * num_physpages >>
+                mds_min_threads = num_possible_cpus() * CFS_NUM_CACHEPAGES >>
                         (27 - CFS_PAGE_SHIFT);
                 if (mds_min_threads < MDS_THREADS_MIN)
                         mds_min_threads = MDS_THREADS_MIN;
diff --git a/lustre/ost/ost_handler.c b/lustre/ost/ost_handler.c
index bb93ce9..b95ed35 100644
--- a/lustre/ost/ost_handler.c
+++ b/lustre/ost/ost_handler.c
@@ -2052,7 +2052,7 @@ static int ost_setup(struct obd_device *obd, obd_count len, void *buf)
                 oss_max_threads = oss_min_threads = oss_num_threads;
         } else {
                 /* Base min threads on memory and cpus */
-                oss_min_threads = num_possible_cpus() * num_physpages >>
+                oss_min_threads = num_possible_cpus() * CFS_NUM_CACHEPAGES >>
                         (27 - CFS_PAGE_SHIFT);
                 if (oss_min_threads < OSS_THREADS_MIN)
                         oss_min_threads = OSS_THREADS_MIN;