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| author | Jens Axboe <axboe@kernel.dk> | 2021-10-12 09:24:29 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-10-18 14:40:40 -0600 |
| commit | 5a72e899ceb465d731c413d57c6c12cdbf88303c (patch) | |
| tree | b6e745cb41973b698104f1b3b1d20684edb47395 /include/linux/blkdev.h | |
| parent | 013a7f95438144f4ab39a1017a0bff2765d2551a (diff) | |
| download | lwn-5a72e899ceb465d731c413d57c6c12cdbf88303c.tar.gz lwn-5a72e899ceb465d731c413d57c6c12cdbf88303c.zip | |
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 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index b0a322172965..fd9771a1da09 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -569,8 +569,9 @@ blk_status_t errno_to_blk_status(int errno); #define BLK_POLL_ONESHOT (1 << 0) /* do not sleep to wait for the expected completion time */ #define BLK_POLL_NOSLEEP (1 << 1) -int bio_poll(struct bio *bio, unsigned int flags); -int iocb_bio_iopoll(struct kiocb *kiocb, unsigned int flags); +int bio_poll(struct bio *bio, struct io_comp_batch *iob, unsigned int flags); +int iocb_bio_iopoll(struct kiocb *kiocb, struct io_comp_batch *iob, + unsigned int flags); static inline struct request_queue *bdev_get_queue(struct block_device *bdev) { @@ -1298,6 +1299,14 @@ int fsync_bdev(struct block_device *bdev); int freeze_bdev(struct block_device *bdev); int thaw_bdev(struct block_device *bdev); +struct io_comp_batch { + struct request *req_list; + bool need_ts; + void (*complete)(struct io_comp_batch *); +}; + +#define DEFINE_IO_COMP_BATCH(name) struct io_comp_batch name = { } + #define rq_list_add(listptr, rq) do { \ (rq)->rq_next = *(listptr); \ *(listptr) = rq; \ |