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authoraszlig <aszlig@redmoonstudios.org>2017-07-06 00:37:49 +0200
committeraszlig <aszlig@redmoonstudios.org>2017-07-06 00:41:36 +0200
commitd1e8f105cdb6e8e9449bbef4459d9dd0fd745065 (patch)
treed3a1eab8408ff7bb4799451f4ae96a8ff2387c39 /modules/user/aszlig/system/bfq-by-default.patch
parent03063098c83ea99764474f1acb057c1a1feb6613 (diff)
modules/kernel: Really enable BFQ by default
I previously wrote that patch in a hurry, so I thought it would be
enough to set CONFIG_DEFAULT_IOSCHED to "bfq". But in block/elevator.c
the actual default for blk-mq is a constant and can't be configured via
CONFIG_DEFAULT_IOSCHED.

So we're now patching just that constant and nothing more.

Also, I've enabled CONFIG_DM_MQ_DEFAULT, because the DM devices need to
be switched to blk-mq as well and for example on dnyarri I'm actually
using the device mapper for LUKS.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Diffstat (limited to 'modules/user/aszlig/system/bfq-by-default.patch')
-rw-r--r--modules/user/aszlig/system/bfq-by-default.patch13
1 files changed, 13 insertions, 0 deletions
diff --git a/modules/user/aszlig/system/bfq-by-default.patch b/modules/user/aszlig/system/bfq-by-default.patch
new file mode 100644
index 00000000..c6ee0492
--- /dev/null
+++ b/modules/user/aszlig/system/bfq-by-default.patch
@@ -0,0 +1,13 @@
+diff --git a/block/elevator.c b/block/elevator.c
+index dac99fbfc273..fbcdba53a3aa 100644
+--- a/block/elevator.c
++++ b/block/elevator.c
+@@ -229,7 +229,7 @@ int elevator_init(struct request_queue *q, char *name)
+ 		 */
+ 		if (q->mq_ops) {
+ 			if (q->nr_hw_queues == 1)
+-				e = elevator_get("mq-deadline", false);
++				e = elevator_get("bfq", false);
+ 			if (!e)
+ 				return 0;
+ 		} else