compat_ioctl: block: handle Persistent Reservations
These were added to blkdev_ioctl() in linux-5.5 but not
blkdev_compat_ioctl, so add them now.
Cc: <stable@vger.kernel.org> # v4.4+
Fixes: bbd3e06436
("block: add an API for Persistent Reservations")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fold in followup patch from Arnd with missing pr.h header include.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -6,6 +6,7 @@
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#include <linux/compat.h>
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#include <linux/elevator.h>
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#include <linux/hdreg.h>
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#include <linux/pr.h>
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#include <linux/slab.h>
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#include <linux/syscalls.h>
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#include <linux/types.h>
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@ -408,6 +409,14 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
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case BLKTRACETEARDOWN: /* compatible */
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ret = blk_trace_ioctl(bdev, cmd, compat_ptr(arg));
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return ret;
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case IOC_PR_REGISTER:
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case IOC_PR_RESERVE:
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case IOC_PR_RELEASE:
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case IOC_PR_PREEMPT:
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case IOC_PR_PREEMPT_ABORT:
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case IOC_PR_CLEAR:
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return blkdev_ioctl(bdev, mode, cmd,
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(unsigned long)compat_ptr(arg));
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default:
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if (disk->fops->compat_ioctl)
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ret = disk->fops->compat_ioctl(bdev, mode, cmd, arg);
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