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-rw-r--r--block/compat_ioctl.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 67eb93c..f87615d 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -774,9 +774,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
bdi = blk_get_backing_dev_info(bdev);
if (bdi == NULL)
return -ENOTTY;
- lock_kernel();
bdi->ra_pages = (arg * 512) / PAGE_CACHE_SIZE;
- unlock_kernel();
return 0;
case BLKGETSIZE:
size = bdev->bd_inode->i_size;
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