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block: remove __blkdev_driver_ioctl

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Just open code it in the few callers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-11-03 11:00:18 +01:00 committed by Jens Axboe
parent 98f49b63e8
commit a7cb3d2f09
5 changed files with 16 additions and 27 deletions
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25
block/ioctl.c
View File

@ -219,23 +219,6 @@ static int compat_put_ulong(compat_ulong_t __user *argp, compat_ulong_t val)
}
#endif
int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,
unsigned cmd, unsigned long arg)
{
struct gendisk *disk = bdev->bd_disk;
if (disk->fops->ioctl)
return disk->fops->ioctl(bdev, mode, cmd, arg);
return -ENOTTY;
}
/*
* For the record: _GPL here is only because somebody decided to slap it
* on the previous export. Sheer idiocy, since it wasn't copyrightable
* at all and could be open-coded without any exports by anybody who cares.
*/
EXPORT_SYMBOL_GPL(__blkdev_driver_ioctl);
#ifdef CONFIG_COMPAT
/*
* This is the equivalent of compat_ptr_ioctl(), to be used by block
@ -594,10 +577,12 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
}
ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp);
if (ret == -ENOIOCTLCMD)
return __blkdev_driver_ioctl(bdev, mode, cmd, arg);
if (ret != -ENOIOCTLCMD)
return ret;
return ret;
if (!bdev->bd_disk->fops->ioctl)
return -ENOTTY;
return bdev->bd_disk->fops->ioctl(bdev, mode, cmd, arg);
}
EXPORT_SYMBOL_GPL(blkdev_ioctl); /* for /dev/raw */

6
drivers/block/pktcdvd.c
View File

@ -2584,9 +2584,11 @@ static int pkt_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
case CDROM_LAST_WRITTEN:
case CDROM_SEND_PACKET:
case SCSI_IOCTL_SEND_COMMAND:
ret = __blkdev_driver_ioctl(pd->bdev, mode, cmd, arg);
if (!bdev->bd_disk->fops->ioctl)
ret = -ENOTTY;
else
ret = bdev->bd_disk->fops->ioctl(bdev, mode, cmd, arg);
break;
default:
pkt_dbg(2, pd, "Unknown ioctl (%x)\n", cmd);
ret = -ENOTTY;

5
drivers/md/bcache/request.c
View File

@ -1230,8 +1230,9 @@ static int cached_dev_ioctl(struct bcache_device *d, fmode_t mode,
if (dc->io_disable)
return -EIO;
return __blkdev_driver_ioctl(dc->bdev, mode, cmd, arg);
if (!dc->bdev->bd_disk->fops->ioctl)
return -ENOTTY;
return dc->bdev->bd_disk->fops->ioctl(dc->bdev, mode, cmd, arg);
}
void bch_cached_dev_request_init(struct cached_dev *dc)

5
drivers/md/dm.c
View File

@ -570,7 +570,10 @@ static int dm_blk_ioctl(struct block_device *bdev, fmode_t mode,
}
}
r = __blkdev_driver_ioctl(bdev, mode, cmd, arg);
if (!bdev->bd_disk->fops->ioctl)
r = -ENOTTY;
else
r = bdev->bd_disk->fops->ioctl(bdev, mode, cmd, arg);
out:
dm_unprepare_ioctl(md, srcu_idx);
return r;

2
include/linux/blkdev.h
View File

@ -1867,8 +1867,6 @@ extern int blkdev_compat_ptr_ioctl(struct block_device *, fmode_t,
#define blkdev_compat_ptr_ioctl NULL
#endif
extern int __blkdev_driver_ioctl(struct block_device *, fmode_t, unsigned int,
unsigned long);
extern int bdev_read_page(struct block_device *, sector_t, struct page *);
extern int bdev_write_page(struct block_device *, sector_t, struct page *,
struct writeback_control *);