cfq v2 switch bug
PATCH 1/1 cfq v2 switch bug
Hi,
Fix online switching issue with cfq v2. It does deferred clearing of e->elevator_data, which screws up the current io scheduler. It does not have to, so just remove it.
Signed-off-by Jens Axboe <[email protected]>
drivers/block/cfq-iosched.c renamed from opt/kernel/linux-2.6.9-mm1/drivers/block/cfq-iosched.c +0 -2
@@ -1482,7 +1482,6 @@static void cfq_put_cfqd (struct cfq_data *cfqd) {request_queue_t *q = cfqd->queue; -elevator_t *e = q->elevator;struct cfq_queue *cfqq;if (!atomic_dec_and_test (&cfqd->ref))
@@ -1500,7 +1499,6 @@blk_put_queue (q); - e->elevator_data =NULL ;mempool_destroy (cfqd->crq_pool);kfree (cfqd->crq_hash);kfree (cfqd->cfq_hash);
Signature · 1 line
Jens Axboe