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block: push down BKL into .locked_ioctl

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As a preparation for the removal of the big kernel
lock in the block layer, this removes the BKL
from the common ioctl handling code, moving it
into every single driver still using it.

Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Arnd Bergmann 2010-07-08 10:18:46 +02:00 • committed by Jens Axboe
commit 8a6cfeb6de
30 changed files with 253 additions and 85 deletions
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11
block/ioctl.c
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@ -163,18 +163,10 @@ int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,
unsigned cmd, unsigned long arg)
{
struct gendisk *disk = bdev->bd_disk;
int ret;
if (disk->fops->ioctl)
return disk->fops->ioctl(bdev, mode, cmd, arg);
if (disk->fops->locked_ioctl) {
lock_kernel();
ret = disk->fops->locked_ioctl(bdev, mode, cmd, arg);
unlock_kernel();
return ret;
}
return -ENOTTY;
}
/*
@ -185,8 +177,7 @@ int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,
EXPORT_SYMBOL_GPL(__blkdev_driver_ioctl);
/*
* always keep this in sync with compat_blkdev_ioctl() and
* compat_blkdev_locked_ioctl()
* always keep this in sync with compat_blkdev_ioctl()
*/
int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
unsigned long arg)