block: kill disk_{check|set|clear|alloc}_badblocks

These actions are completely managed by a block driver or can use the
badblocks api directly.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

block/genhd.c

@@ -506,16 +506,6 @@ static int exact_lock(dev_t devt, void *data)
 	return 0;
 }
 
-int disk_alloc_badblocks(struct gendisk *disk)
-{
-	disk->bb = kzalloc(sizeof(*(disk->bb)), GFP_KERNEL);
-	if (!disk->bb)
-		return -ENOMEM;
-
-	return badblocks_init(disk->bb, 1);
-}
-EXPORT_SYMBOL(disk_alloc_badblocks);
-
 static void register_disk(struct gendisk *disk)
 {
 	struct device *ddev = disk_to_dev(disk);
@@ -682,38 +672,6 @@ void del_gendisk(struct gendisk *disk)
 }
 EXPORT_SYMBOL(del_gendisk);
 
-/*
- * The gendisk usage of badblocks does not track acknowledgements for
- * badblocks. We always assume they are acknowledged.
- */
-int disk_check_badblocks(struct gendisk *disk, sector_t s, int sectors,
-		   sector_t *first_bad, int *bad_sectors)
-{
-	if (!disk->bb)
-		return 0;
-
-	return badblocks_check(disk->bb, s, sectors, first_bad, bad_sectors);
-}
-EXPORT_SYMBOL(disk_check_badblocks);
-
-int disk_set_badblocks(struct gendisk *disk, sector_t s, int sectors)
-{
-	if (!disk->bb)
-		return 0;
-
-	return badblocks_set(disk->bb, s, sectors, 1);
-}
-EXPORT_SYMBOL(disk_set_badblocks);
-
-int disk_clear_badblocks(struct gendisk *disk, sector_t s, int sectors)
-{
-	if (!disk->bb)
-		return 0;
-
-	return badblocks_clear(disk->bb, s, sectors);
-}
-EXPORT_SYMBOL(disk_clear_badblocks);
-
 /* sysfs access to bad-blocks list. */
 static ssize_t disk_badblocks_show(struct device *dev,
 					struct device_attribute *attr,

include/linux/genhd.h

@@ -435,11 +435,6 @@ extern void add_disk(struct gendisk *disk);
 extern void del_gendisk(struct gendisk *gp);
 extern struct gendisk *get_gendisk(dev_t dev, int *partno);
 extern struct block_device *bdget_disk(struct gendisk *disk, int partno);
-int disk_alloc_badblocks(struct gendisk *disk);
-extern int disk_check_badblocks(struct gendisk *disk, sector_t s, int sectors,
-		   sector_t *first_bad, int *bad_sectors);
-extern int disk_set_badblocks(struct gendisk *disk, sector_t s, int sectors);
-extern int disk_clear_badblocks(struct gendisk *disk, sector_t s, int sectors);
 
 extern void set_device_ro(struct block_device *bdev, int flag);
 extern void set_disk_ro(struct gendisk *disk, int flag);