[PATCH] ocfs2: Alloc at least a page for the DLM hash

[linux-2.6-omap-h63xx.git] / fs / ocfs2 / dlm / dlmcommon.h

diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index 0378ddbc8a8cc8f6f652be9a7caf79683294f617..4fc1be3a3fa20ffabea8838190d7cd9ccac3a7f4 100644 (file)
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -37,8 +37,12 @@
 #define DLM_THREAD_SHUFFLE_INTERVAL    5     // flush everything every 5 passes
 #define DLM_THREAD_MS                  200   // flush at least every 200 ms
 
-#define DLM_HASH_SIZE          (1 << 14)
-#define DLM_HASH_PAGES         (DLM_HASH_SIZE / PAGE_SIZE)
+#define DLM_HASH_SIZE_DEFAULT  (1 << 14)
+#if DLM_HASH_SIZE_DEFAULT < PAGE_SIZE
+# define DLM_HASH_PAGES                1
+#else
+# define DLM_HASH_PAGES                (DLM_HASH_SIZE_DEFAULT / PAGE_SIZE)
+#endif
 #define DLM_BUCKETS_PER_PAGE   (PAGE_SIZE / sizeof(struct hlist_head))
 #define DLM_HASH_BUCKETS       (DLM_HASH_PAGES * DLM_BUCKETS_PER_PAGE)