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block: push BKL into blktrace ioctls

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The blktrace driver currently needs the BKL, but
we should not need to take that in the block layer,
so just push it down into the driver itself.

It is quite likely that the BKL is not actually
required in blktrace code and could be removed
in a follow-on patch.

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 2010-07-07 16:51:26 +02:00 • committed by Jens Axboe
commit 62c2a7d969
4 changed files with 55 additions and 58 deletions
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2
block/ioctl.c
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@ -320,9 +320,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
case BLKTRACESTOP:
case BLKTRACESETUP:
case BLKTRACETEARDOWN:
lock_kernel();
ret = blk_trace_ioctl(bdev, cmd, (char __user *) arg);
unlock_kernel();
break;
default:
ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);