From 74d46992e0d9dee7f1f376de0d56d31614c8a17a Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 23 Aug 2017 19:10:32 +0200 Subject: block: replace bi_bdev with a gendisk pointer and partitions index This way we don't need a block_device structure to submit I/O. The block_device has different life time rules from the gendisk and request_queue and is usually only available when the block device node is open. Other callers need to explicitly create one (e.g. the lightnvm passthrough code, or the new nvme multipathing code). For the actual I/O path all that we need is the gendisk, which exists once per block device. But given that the block layer also does partition remapping we additionally need a partition index, which is used for said remapping in generic_make_request. Note that all the block drivers generally want request_queue or sometimes the gendisk, so this removes a layer of indirection all over the stack. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- drivers/s390/block/dcssblk.c | 4 ++-- drivers/s390/block/xpram.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/s390/block') diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 68bae4f6bd88..7abb240847c0 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -856,14 +856,14 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio) blk_queue_split(q, &bio); bytes_done = 0; - dev_info = bio->bi_bdev->bd_disk->private_data; + dev_info = bio->bi_disk->private_data; if (dev_info == NULL) goto fail; if ((bio->bi_iter.bi_sector & 7) != 0 || (bio->bi_iter.bi_size & 4095) != 0) /* Request is not page-aligned. */ goto fail; - if (bio_end_sector(bio) > get_capacity(bio->bi_bdev->bd_disk)) { + if (bio_end_sector(bio) > get_capacity(bio->bi_disk)) { /* Request beyond end of DCSS segment. */ goto fail; } diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c index a48f0d40c1d2..571a0709e1e5 100644 --- a/drivers/s390/block/xpram.c +++ b/drivers/s390/block/xpram.c @@ -183,7 +183,7 @@ static unsigned long xpram_highest_page_index(void) */ static blk_qc_t xpram_make_request(struct request_queue *q, struct bio *bio) { - xpram_device_t *xdev = bio->bi_bdev->bd_disk->private_data; + xpram_device_t *xdev = bio->bi_disk->private_data; struct bio_vec bvec; struct bvec_iter iter; unsigned int index; -- cgit v1.2.3