From b5dc5d4d1f4ff9032eb6c21a3c571a1317dc9289 Mon Sep 17 00:00:00 2001 From: Luca Miccio Date: Mon, 9 Oct 2017 16:27:21 +0200 Subject: block,bfq: Disable writeback throttling Similarly to CFQ, BFQ has its write-throttling heuristics, and it is better not to combine them with further write-throttling heuristics of a different nature. So this commit disables write-back throttling for a device if BFQ is used as I/O scheduler for that device. Signed-off-by: Luca Miccio Signed-off-by: Paolo Valente Tested-by: Oleksandr Natalenko Tested-by: Lee Tibbert Signed-off-by: Jens Axboe --- block/bfq-iosched.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'block/bfq-iosched.c') diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c index 70f9177c4f5b..261f98695910 100644 --- a/block/bfq-iosched.c +++ b/block/bfq-iosched.c @@ -108,6 +108,7 @@ #include "blk-mq-tag.h" #include "blk-mq-sched.h" #include "bfq-iosched.h" +#include "blk-wbt.h" #define BFQ_BFQQ_FNS(name) \ void bfq_mark_bfqq_##name(struct bfq_queue *bfqq) \ @@ -4810,7 +4811,7 @@ static int bfq_init_queue(struct request_queue *q, struct elevator_type *e) bfq_init_root_group(bfqd->root_group, bfqd); bfq_init_entity(&bfqd->oom_bfqq.entity, bfqd->root_group); - + wbt_disable_default(q); return 0; out_free: -- cgit v1.2.3