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| author | Bart Van Assche <bvanassche@acm.org> | 2019-07-01 08:47:29 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-07-02 21:03:27 -0600 |
| commit | c05f42206f4de12b6807270fc669b45472f1bdb7 (patch) | |
| tree | 82aaf5161958336f8ef635f9f7a8daaeddad7f64 /block/kyber-iosched.c | |
| parent | 417232880c8a646739dbf4666a231505a1917fcb (diff) | |
| download | lwn-c05f42206f4de12b6807270fc669b45472f1bdb7.tar.gz lwn-c05f42206f4de12b6807270fc669b45472f1bdb7.zip | |
blk-mq: remove blk_mq_put_ctx()
No code that occurs between blk_mq_get_ctx() and blk_mq_put_ctx() depends
on preemption being disabled for its correctness. Since removing the CPU
preemption calls does not measurably affect performance, simplify the
blk-mq code by removing the blk_mq_put_ctx() function and also by not
disabling preemption in blk_mq_get_ctx().
Cc: Hannes Reinecke <hare@suse.com>
Cc: Omar Sandoval <osandov@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/kyber-iosched.c')
| -rw-r--r-- | block/kyber-iosched.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/block/kyber-iosched.c b/block/kyber-iosched.c index 3c2602601741..34dcea0ef637 100644 --- a/block/kyber-iosched.c +++ b/block/kyber-iosched.c @@ -575,7 +575,6 @@ static bool kyber_bio_merge(struct blk_mq_hw_ctx *hctx, struct bio *bio, spin_lock(&kcq->lock); merged = blk_mq_bio_list_merge(hctx->queue, rq_list, bio, nr_segs); spin_unlock(&kcq->lock); - blk_mq_put_ctx(ctx); return merged; } |