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dax: unmap/truncate on device shutdown

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Invalidate all mappings of a device-dax instance when the device is
unregistered.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2016-08-04 16:53:50 -07:00
parent 3bc52c45ba
commit 9dc1e4927b
1 changed files with 1 additions and 0 deletions
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drivers/dax/dax.c
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@ -550,6 +550,7 @@ static void unregister_dax_dev(void *dev)
*/
dax_dev->alive = false;
synchronize_rcu();
unmap_mapping_range(dax_dev->inode->i_mapping, 0, 0, 1);
cdev_del(cdev);
device_unregister(dev);
}