b=23175 disable lockless truncate

lockless truncate is suspected to cause bug 23175. Disable it by
default for now to see if the problem happens again.

diff --git a/lustre/llite/llite_internal.h b/lustre/llite/llite_internal.h
index 6e6490d..fecaac5 100644 (file)
--- a/lustre/llite/llite_internal.h
+++ b/lustre/llite/llite_internal.h
@@ -307,7 +307,7 @@ enum stats_track_type {
 /* default value for ll_sb_info->contention_time */
 #define SBI_DEFAULT_CONTENTION_SECONDS     60
 /* default value for lockless_truncate_enable */
-#define SBI_DEFAULT_LOCKLESS_TRUNCATE_ENABLE 1
+#define SBI_DEFAULT_LOCKLESS_TRUNCATE_ENABLE 0 /* see bug 23175 */
 /* default value for ll_direct_io_default */
 #define SBI_DEFAULT_DIRECT_IO_DEFAULT 0