block: adjust default budget for blk-iopoll

It's not exported, I doubt we'll have a reason to change this...

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/block/blk-iopoll.c b/block/blk-iopoll.c
index df6f192..0671d46 100644 (file)
--- a/block/blk-iopoll.c
+++ b/block/blk-iopoll.c
@@ -17,6 +17,8 @@
 int blk_iopoll_enabled = 1;
 EXPORT_SYMBOL(blk_iopoll_enabled);
 
+static unsigned int blk_iopoll_budget __read_mostly = 256;
+
 static DEFINE_PER_CPU(struct list_head, blk_cpu_iopoll);
 
 /**
@@ -78,8 +80,8 @@ EXPORT_SYMBOL(blk_iopoll_complete);
 static void blk_iopoll_softirq(struct softirq_action *h)
 {
        struct list_head *list = &__get_cpu_var(blk_cpu_iopoll);
+       int rearm = 0, budget = blk_iopoll_budget;
        unsigned long start_time = jiffies;
-       int rearm = 0, budget = 64;
 
        local_irq_disable();