Messages in this thread Patch in this message | | | From | Oleksandr Natalenko <> | Subject | [PATCH] block: increase BLKCG_MAX_POLS | Date | Sat, 17 Jul 2021 14:33:28 +0200 |
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After mq-deadline learnt to deal with cgroups, the BLKCG_MAX_POLS value became too small for all the elevators to be registered properly. The following issue is seen:
``` calling bfq_init+0x0/0x8b @ 1 blkcg_policy_register: BLKCG_MAX_POLS too small initcall bfq_init+0x0/0x8b returned -28 after 507 usecs ```
and BFQ is non-functional.
Increase BLKCG_MAX_POLS to allow space for everyone
Link: https://lore.kernel.org/lkml/8988303.mDXGIdCtx8@natalenko.name/ Signed-off-by: Oleksandr Natalenko <oleksandr@natalenko.name> --- include/linux/blkdev.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 3177181c4326..d3afea47ade6 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -57,7 +57,7 @@ struct blk_keyslot_manager; * Maximum number of blkcg policies allowed to be registered concurrently. * Defined here to simplify include dependency. */ -#define BLKCG_MAX_POLS 5 +#define BLKCG_MAX_POLS 6 typedef void (rq_end_io_fn)(struct request *, blk_status_t); -- 2.32.0
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