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block: remove bdev_stack_limits

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This function is just a tiny wrapper around blk_stack_limit and has
two callers.  Simplify the stack a bit by open coding it in the two
callers.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Tested-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-07-20 08:12:50 +02:00 committed by Jens Axboe
parent 3093a47972
commit 9efa82ef2b
3 changed files with 4 additions and 26 deletions
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25
block/blk-settings.c
View File

@ -614,28 +614,6 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
}
EXPORT_SYMBOL(blk_stack_limits);
/**
* bdev_stack_limits - adjust queue limits for stacked drivers
* @t: the stacking driver limits (top device)
* @bdev: the component block_device (bottom)
* @start: first data sector within component device
*
* Description:
* Merges queue limits for a top device and a block_device. Returns
* 0 if alignment didn't change. Returns -1 if adding the bottom
* device caused misalignment.
*/
int bdev_stack_limits(struct queue_limits *t, struct block_device *bdev,
sector_t start)
{
struct request_queue *bq = bdev_get_queue(bdev);
start += get_start_sect(bdev);
return blk_stack_limits(t, &bq->limits, start);
}
EXPORT_SYMBOL(bdev_stack_limits);
/**
* disk_stack_limits - adjust queue limits for stacked drivers
* @disk: MD/DM gendisk (top)
@ -651,7 +629,8 @@ void disk_stack_limits(struct gendisk *disk, struct block_device *bdev,
{
struct request_queue *t = disk->queue;
if (bdev_stack_limits(&t->limits, bdev, offset >> 9) < 0) {
if (blk_stack_limits(&t->limits, &bdev_get_queue(bdev)->limits,
get_start_sect(bdev) + (offset >> 9)) < 0) {
char top[BDEVNAME_SIZE], bottom[BDEVNAME_SIZE];
disk_name(disk, 0, top);

3
drivers/md/dm-table.c
View File

@ -458,7 +458,8 @@ static int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev,
return 0;
}
if (bdev_stack_limits(limits, bdev, start) < 0)
if (blk_stack_limits(limits, &q->limits,
get_start_sect(bdev) + start) < 0)
DMWARN("%s: adding target device %s caused an alignment inconsistency: "
"physical_block_size=%u, logical_block_size=%u, "
"alignment_offset=%u, start=%llu",

2
include/linux/blkdev.h
View File

@ -1139,8 +1139,6 @@ extern void blk_set_default_limits(struct queue_limits *lim);
extern void blk_set_stacking_limits(struct queue_limits *lim);
extern int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
sector_t offset);
extern int bdev_stack_limits(struct queue_limits *t, struct block_device *bdev,
sector_t offset);
extern void disk_stack_limits(struct gendisk *disk, struct block_device *bdev,
sector_t offset);
extern void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b);