Avoid excessive time spent in buffer management.

Signed-off-by: Daniel J Blueman <daniel@numascale.com>

diff --git a/fs/buffer.c b/fs/buffer.c
index 20805db..d9b4f4a 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3312,7 +3312,7 @@ static void recalc_bh_state(void)
 	int i;
 	int tot = 0;
 
-	if (__this_cpu_inc_return(bh_accounting.ratelimit) - 1 < 4096)
+	if (__this_cpu_inc_return(bh_accounting.ratelimit) - 1 < 32768)
 		return;
 	__this_cpu_write(bh_accounting.ratelimit, 0);
 	for_each_online_cpu(i)