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| author | Luca Miccio <lucmiccio@gmail.com> | 2017-10-09 16:27:21 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-25 14:26:26 +0100 |
| commit | 7535afccf97c9dd1559e0b2d7586a522020e5522 (patch) | |
| tree | 380a6fcfb42147c81cff84dd15925c8d01935408 | |
| parent | afdbec5d3c652e8d731861c460eee96ef9498315 (diff) | |
| download | linux-exynos-7535afccf97c9dd1559e0b2d7586a522020e5522.tar.gz linux-exynos-7535afccf97c9dd1559e0b2d7586a522020e5522.tar.bz2 linux-exynos-7535afccf97c9dd1559e0b2d7586a522020e5522.zip | |
block,bfq: Disable writeback throttling
[ Upstream commit b5dc5d4d1f4ff9032eb6c21a3c571a1317dc9289 ]
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 <lucmiccio@gmail.com>
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Tested-by: Lee Tibbert <lee.tibbert@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | block/bfq-iosched.c | 3 | ||||
| -rw-r--r-- | block/blk-wbt.c | 2 |
2 files changed, 3 insertions, 2 deletions
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c index a4783da90ba8..0f860cf0d56d 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) \ @@ -4775,7 +4776,7 @@ 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: diff --git a/block/blk-wbt.c b/block/blk-wbt.c index 6a9a0f03a67b..e59d59c11ebb 100644 --- a/block/blk-wbt.c +++ b/block/blk-wbt.c @@ -654,7 +654,7 @@ void wbt_set_write_cache(struct rq_wb *rwb, bool write_cache_on) } /* - * Disable wbt, if enabled by default. Only called from CFQ. + * Disable wbt, if enabled by default. */ void wbt_disable_default(struct request_queue *q) { |