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| author | Jens Axboe <axboe@kernel.dk> | 2021-11-13 19:18:32 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-11-29 14:38:44 +0100 |
| commit | 5a9d041ba2f6da468c891ca0fe263758e2c12091 (patch) | |
| tree | b3d5bcc519faf89478dfd375f9f1590f1e759216 /block/blk-mq-sched.c | |
| parent | block: only allocate poll_stats if there's a user of them (diff) | |
| download | linux-5a9d041ba2f6da468c891ca0fe263758e2c12091.tar.xz linux-5a9d041ba2f6da468c891ca0fe263758e2c12091.zip | |
block: move io_context creation into where it's needed
The only user of the io_context for IO is BFQ, yet we put the checking
and logic of it into the normal IO path.
Put the creation into blk_mq_sched_assign_ioc(), and have BFQ use that
helper.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq-sched.c')
| -rw-r--r-- | block/blk-mq-sched.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c index ba21449439cc..b942b38000e5 100644 --- a/block/blk-mq-sched.c +++ b/block/blk-mq-sched.c @@ -24,6 +24,10 @@ void blk_mq_sched_assign_ioc(struct request *rq) struct io_context *ioc; struct io_cq *icq; + /* create task io_context, if we don't have one already */ + if (unlikely(!current->io_context)) + create_task_io_context(current, GFP_ATOMIC, q->node); + /* * May not have an IO context if it's a passthrough request */ @@ -43,6 +47,7 @@ void blk_mq_sched_assign_ioc(struct request *rq) get_io_context(icq->ioc); rq->elv.icq = icq; } +EXPORT_SYMBOL_GPL(blk_mq_sched_assign_ioc); /* * Mark a hardware queue as needing a restart. For shared queues, maintain |