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authorDamien Le Moal <damien.lemoal@wdc.com>2021-08-11 06:37:01 +0300
committerJens Axboe <axboe@kernel.dk>2021-08-18 16:21:12 +0300
commit202bc942c5cd4340d37b06c4e0b8b03f9925d818 (patch)
treed035b4446726fef7015c835a569f83bf68d8beb3 /block/bfq-iosched.h
parentba05200fcce0a73fa8db16c514fbaa476d1d9399 (diff)
downloadlinux-202bc942c5cd4340d37b06c4e0b8b03f9925d818.tar.xz
block: Introduce IOPRIO_NR_LEVELS
The BFQ scheduler and ioprio_check_cap() both assume that the RT priority class (IOPRIO_CLASS_RT) can have up to 8 different priority levels, similarly to the BE class (IOPRIO_CLASS_iBE). This is controlled using the IOPRIO_BE_NR macro , which is badly named as the number of levels also applies to the RT class. Introduce the class independent IOPRIO_NR_LEVELS macro, defined to 8, to make things clear. Keep the old IOPRIO_BE_NR macro definition as an alias for IOPRIO_NR_LEVELS. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Link: https://lore.kernel.org/r/20210811033702.368488-6-damien.lemoal@wdc.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/bfq-iosched.h')
-rw-r--r--block/bfq-iosched.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/block/bfq-iosched.h b/block/bfq-iosched.h
index 99c2a3cb081e..385e28a843d1 100644
--- a/block/bfq-iosched.h
+++ b/block/bfq-iosched.h
@@ -931,7 +931,7 @@ struct bfq_group {
void *bfqd;
- struct bfq_queue *async_bfqq[2][IOPRIO_BE_NR];
+ struct bfq_queue *async_bfqq[2][IOPRIO_NR_LEVELS];
struct bfq_queue *async_idle_bfqq;
struct bfq_entity *my_entity;
@@ -948,7 +948,7 @@ struct bfq_group {
struct bfq_entity entity;
struct bfq_sched_data sched_data;
- struct bfq_queue *async_bfqq[2][IOPRIO_BE_NR];
+ struct bfq_queue *async_bfqq[2][IOPRIO_NR_LEVELS];
struct bfq_queue *async_idle_bfqq;
struct rb_root rq_pos_tree;