From a3396b99990d8b4e5797e7b16fdeb64c15ae97bb Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 13 Nov 2024 16:20:44 +0100 Subject: block: add a rq_list type Replace the semi-open coded request list helpers with a proper rq_list type that mirrors the bio_list and has head and tail pointers. Besides better type safety this actually allows to insert at the tail of the list, which will be useful soon. Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20241113152050.157179-5-hch@lst.de Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'include/linux/blkdev.h') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index cd905afaf51a..00212e96261a 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1007,6 +1007,11 @@ extern void blk_put_queue(struct request_queue *); void blk_mark_disk_dead(struct gendisk *disk); #ifdef CONFIG_BLOCK +struct rq_list { + struct request *head; + struct request *tail; +}; + /* * blk_plug permits building a queue of related requests by holding the I/O * fragments for a short period. This allows merging of sequential requests @@ -1019,10 +1024,10 @@ void blk_mark_disk_dead(struct gendisk *disk); * blk_flush_plug() is called. */ struct blk_plug { - struct request *mq_list; /* blk-mq requests */ + struct rq_list mq_list; /* blk-mq requests */ /* if ios_left is > 1, we can batch tag/rq allocations */ - struct request *cached_rq; + struct rq_list cached_rqs; u64 cur_ktime; unsigned short nr_ios; @@ -1684,7 +1689,7 @@ int bdev_thaw(struct block_device *bdev); void bdev_fput(struct file *bdev_file); struct io_comp_batch { - struct request *req_list; + struct rq_list req_list; bool need_ts; void (*complete)(struct io_comp_batch *); }; -- cgit v1.2.3