diff options
| author | Christoph Hellwig <hch@lst.de> | 2022-10-20 08:48:16 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-10-24 02:59:17 +0200 |
| commit | dd6f7f17bf5831ac94d2b8ffe3d67dac201a9b97 (patch) | |
| tree | c2898bdc5199cb3de5027f38df1afd042f6a78c6 /block/elevator.h | |
| parent | blk-wbt: don't enable throttling if default elevator is bfq (diff) | |
| download | linux-dd6f7f17bf5831ac94d2b8ffe3d67dac201a9b97.tar.xz linux-dd6f7f17bf5831ac94d2b8ffe3d67dac201a9b97.zip | |
block: add proper helpers for elevator_type module refcount management
Make sure we have helpers for all relevant module refcount operations on
the elevator_type in elevator.h, and use them. Move the call to the get
helper in blk_mq_elv_switch_none a bit so that it is obvious with a less
verbose comment.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20221020064819.1469928-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/elevator.h')
| -rw-r--r-- | block/elevator.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/block/elevator.h b/block/elevator.h index 75382471222d..774a8f6b99e6 100644 --- a/block/elevator.h +++ b/block/elevator.h @@ -84,6 +84,21 @@ struct elevator_type struct list_head list; }; +static inline bool elevator_tryget(struct elevator_type *e) +{ + return try_module_get(e->elevator_owner); +} + +static inline void __elevator_get(struct elevator_type *e) +{ + __module_get(e->elevator_owner); +} + +static inline void elevator_put(struct elevator_type *e) +{ + module_put(e->elevator_owner); +} + #define ELV_HASH_BITS 6 void elv_rqhash_del(struct request_queue *q, struct request *rq); |