orangefs: leave files in the page cache for a few micro seconds at least

Signed-off-by: Mike Marshall <hubcap@omnibond.com>

fs/orangefs/orangefs-mod.c

@@ -31,7 +31,7 @@ static ulong module_parm_debug_mask;
 __u64 orangefs_gossip_debug_mask;
 int op_timeout_secs = ORANGEFS_DEFAULT_OP_TIMEOUT_SECS;
 int slot_timeout_secs = ORANGEFS_DEFAULT_SLOT_TIMEOUT_SECS;
-int orangefs_cache_timeout_msecs = 50;
+int orangefs_cache_timeout_msecs = 500;
 int orangefs_dcache_timeout_msecs = 50;
 int orangefs_getattr_timeout_msecs = 50;