diff options
| author | Jens Axboe <axboe@kernel.dk> | 2021-10-12 18:24:29 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-10-18 23:40:40 +0300 |
| commit | 5a72e899ceb465d731c413d57c6c12cdbf88303c (patch) | |
| tree | b6e745cb41973b698104f1b3b1d20684edb47395 /block/blk-core.c | |
| parent | 013a7f95438144f4ab39a1017a0bff2765d2551a (diff) | |
| download | linux-5a72e899ceb465d731c413d57c6c12cdbf88303c.tar.xz | |
block: add a struct io_comp_batch argument to fops->iopoll()
struct io_comp_batch contains a list head and a completion handler, which
will allow completions to more effciently completed batches of IO.
For now, no functional changes in this patch, we just define the
io_comp_batch structure and add the argument to the file_operations iopoll
handler.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-core.c')
| -rw-r--r-- | block/blk-core.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 20b6cc06461a..d0c2e11411d0 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1078,7 +1078,7 @@ EXPORT_SYMBOL(submit_bio); * Note: the caller must either be the context that submitted @bio, or * be in a RCU critical section to prevent freeing of @bio. */ -int bio_poll(struct bio *bio, unsigned int flags) +int bio_poll(struct bio *bio, struct io_comp_batch *iob, unsigned int flags) { struct request_queue *q = bio->bi_bdev->bd_disk->queue; blk_qc_t cookie = READ_ONCE(bio->bi_cookie); @@ -1096,7 +1096,7 @@ int bio_poll(struct bio *bio, unsigned int flags) if (WARN_ON_ONCE(!queue_is_mq(q))) ret = 0; /* not yet implemented, should not happen */ else - ret = blk_mq_poll(q, cookie, flags); + ret = blk_mq_poll(q, cookie, iob, flags); blk_queue_exit(q); return ret; } @@ -1106,7 +1106,8 @@ EXPORT_SYMBOL_GPL(bio_poll); * Helper to implement file_operations.iopoll. Requires the bio to be stored * in iocb->private, and cleared before freeing the bio. */ -int iocb_bio_iopoll(struct kiocb *kiocb, unsigned int flags) +int iocb_bio_iopoll(struct kiocb *kiocb, struct io_comp_batch *iob, + unsigned int flags) { struct bio *bio; int ret = 0; @@ -1134,7 +1135,7 @@ int iocb_bio_iopoll(struct kiocb *kiocb, unsigned int flags) rcu_read_lock(); bio = READ_ONCE(kiocb->private); if (bio && bio->bi_bdev) - ret = bio_poll(bio, flags); + ret = bio_poll(bio, iob, flags); rcu_read_unlock(); return ret; |