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block: remove the bd_bdi in struct block_device 

Just retrieve the bdi from the disk.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20210809141744.1203023-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-08-09 16:17:44 +02:00 committed by Jens Axboe
parent edb0872f44
commit a11d7fc2d0
7 changed files with 9 additions and 20 deletions
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7
block/ioctl.c
View File

@ -506,7 +506,7 @@ static int blkdev_common_ioctl(struct block_device *bdev, fmode_t mode,
case BLKFRASET:
if(!capable(CAP_SYS_ADMIN))
return -EACCES;
bdev->bd_bdi->ra_pages = (arg * 512) / PAGE_SIZE;
bdev->bd_disk->bdi->ra_pages = (arg * 512) / PAGE_SIZE;
return 0;
case BLKRRPART:
return blkdev_reread_part(bdev, mode);
@ -556,7 +556,8 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
case BLKFRAGET:
if (!argp)
return -EINVAL;
return put_long(argp, (bdev->bd_bdi->ra_pages*PAGE_SIZE) / 512);
return put_long(argp,
(bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512);
case BLKGETSIZE:
size = i_size_read(bdev->bd_inode);
if ((size >> 9) > ~0UL)
@ -628,7 +629,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
if (!argp)
return -EINVAL;
return compat_put_long(argp,
(bdev->bd_bdi->ra_pages * PAGE_SIZE) / 512);
(bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512);
case BLKGETSIZE:
size = i_size_read(bdev->bd_inode);
if ((size >> 9) > ~0UL)

13
fs/block_dev.c
View File

@ -801,7 +801,6 @@ static struct inode *bdev_alloc_inode(struct super_block *sb)
if (!ei)
return NULL;
memset(&ei->bdev, 0, sizeof(ei->bdev));
ei->bdev.bd_bdi = &noop_backing_dev_info;
return &ei->vfs_inode;
}
@ -826,16 +825,11 @@ static void init_once(void *data)
static void bdev_evict_inode(struct inode *inode)
{
struct block_device *bdev = &BDEV_I(inode)->bdev;
truncate_inode_pages_final(&inode->i_data);
invalidate_inode_buffers(inode); /* is it needed here? */
clear_inode(inode);
/* Detach inode from wb early as bdi_put() may free bdi->wb */
inode_detach_wb(inode);
if (bdev->bd_bdi != &noop_backing_dev_info) {
bdi_put(bdev->bd_bdi);
bdev->bd_bdi = &noop_backing_dev_info;
}
}
static const struct super_operations bdev_sops = {
@ -1084,11 +1078,8 @@ static int blkdev_get_whole(struct block_device *bdev, fmode_t mode)
}
}
if (!bdev->bd_openers) {
if (!bdev->bd_openers)
set_init_blocksize(bdev);
if (bdev->bd_bdi == &noop_backing_dev_info)
bdev->bd_bdi = bdi_get(disk->bdi);
}
if (test_bit(GD_NEED_PART_SCAN, &disk->state))
bdev_disk_changed(disk, false);
bdev->bd_openers++;
@ -1121,8 +1112,6 @@ static int blkdev_get_part(struct block_device *part, fmode_t mode)
disk->open_partitions++;
set_init_blocksize(part);
if (part->bd_bdi == &noop_backing_dev_info)
part->bd_bdi = bdi_get(disk->bdi);
done:
part->bd_openers++;
return 0;

2
fs/nilfs2/super.c
View File

@ -1053,7 +1053,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_time_gran = 1;
sb->s_max_links = NILFS_LINK_MAX;
sb->s_bdi = bdi_get(sb->s_bdev->bd_bdi);
sb->s_bdi = bdi_get(sb->s_bdev->bd_disk->bdi);
err = load_nilfs(nilfs, sb);
if (err)

2
fs/super.c
View File

@ -1203,7 +1203,7 @@ static int set_bdev_super(struct super_block *s, void *data)
{
s->s_bdev = data;
s->s_dev = s->s_bdev->bd_dev;
s->s_bdi = bdi_get(s->s_bdev->bd_bdi);
s->s_bdi = bdi_get(s->s_bdev->bd_disk->bdi);
if (blk_queue_stable_writes(s->s_bdev->bd_disk->queue))
s->s_iflags |= SB_I_STABLE_WRITES;

2
fs/xfs/xfs_buf.c
View File

@ -844,7 +844,7 @@ xfs_buf_readahead_map(
{
struct xfs_buf *bp;
if (bdi_read_congested(target->bt_bdev->bd_bdi))
if (bdi_read_congested(target->bt_bdev->bd_disk->bdi))
return;
xfs_buf_read_map(target, map, nmaps,

2
include/linux/backing-dev.h
View File

@ -143,7 +143,7 @@ static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
sb = inode->i_sb;
#ifdef CONFIG_BLOCK
if (sb_is_blkdev_sb(sb))
return I_BDEV(inode)->bd_bdi;
return I_BDEV(inode)->bd_disk->bdi;
#endif
return sb->s_bdi;
}

1
include/linux/blk_types.h
View File

@ -38,7 +38,6 @@ struct block_device {
u8 bd_partno;
spinlock_t bd_size_lock; /* for bd_inode->i_size updates */
struct gendisk * bd_disk;
struct backing_dev_info *bd_bdi;
/* The counter of freeze processes */
int bd_fsfreeze_count;