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| author | Jens Axboe <axboe@kernel.dk> | 2018-11-15 12:22:51 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-11-16 08:34:06 -0700 |
| commit | 344e9ffcbd1898e1dc04085564a6e05c30ea8199 (patch) | |
| tree | ba71320bc66d1158790acf1cdeedd21d2da9dead /block/elevator.c | |
| parent | dabcefab45d36ecb5a22f16577bb0f298876a22d (diff) | |
| download | linux-344e9ffcbd1898e1dc04085564a6e05c30ea8199.tar.bz2 | |
block: add queue_is_mq() helper
Various spots check for q->mq_ops being non-NULL, but provide
a helper to do this instead.
Where the ->mq_ops != NULL check is redundant, remove it.
Since mq == rq-based now that legacy is gone, get rid of the
queue_is_rq_based() and just use queue_is_mq() everywhere.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/elevator.c')
| -rw-r--r-- | block/elevator.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/block/elevator.c b/block/elevator.c index 796436270682..f05e90d4e695 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -667,7 +667,7 @@ static int __elevator_change(struct request_queue *q, const char *name) /* * Special case for mq, turn off scheduling */ - if (q->mq_ops && !strncmp(name, "none", 4)) + if (!strncmp(name, "none", 4)) return elevator_switch(q, NULL); strlcpy(elevator_name, name, sizeof(elevator_name)); @@ -685,8 +685,7 @@ static int __elevator_change(struct request_queue *q, const char *name) static inline bool elv_support_iosched(struct request_queue *q) { - if (q->mq_ops && q->tag_set && (q->tag_set->flags & - BLK_MQ_F_NO_SCHED)) + if (q->tag_set && (q->tag_set->flags & BLK_MQ_F_NO_SCHED)) return false; return true; } @@ -696,7 +695,7 @@ ssize_t elv_iosched_store(struct request_queue *q, const char *name, { int ret; - if (!q->mq_ops || !elv_support_iosched(q)) + if (!queue_is_mq(q) || !elv_support_iosched(q)) return count; ret = __elevator_change(q, name); @@ -713,7 +712,7 @@ ssize_t elv_iosched_show(struct request_queue *q, char *name) struct elevator_type *__e; int len = 0; - if (!queue_is_rq_based(q)) + if (!queue_is_mq(q)) return sprintf(name, "none\n"); if (!q->elevator) @@ -732,7 +731,7 @@ ssize_t elv_iosched_show(struct request_queue *q, char *name) } spin_unlock(&elv_list_lock); - if (q->mq_ops && q->elevator) + if (q->elevator) len += sprintf(name+len, "none"); len += sprintf(len+name, "\n"); |