Commit a1c36b16 authored by Tejun Heo's avatar Tejun Heo Committed by Linus Torvalds

vfio: convert to idr_alloc()

Convert to the much saner new idr interface.
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Acked-by: default avatarAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 6d770931
......@@ -139,23 +139,8 @@ EXPORT_SYMBOL_GPL(vfio_unregister_iommu_driver);
*/
static int vfio_alloc_group_minor(struct vfio_group *group)
{
int ret, minor;
again:
if (unlikely(idr_pre_get(&vfio.group_idr, GFP_KERNEL) == 0))
return -ENOMEM;
/* index 0 is used by /dev/vfio/vfio */
ret = idr_get_new_above(&vfio.group_idr, group, 1, &minor);
if (ret == -EAGAIN)
goto again;
if (ret || minor > MINORMASK) {
if (minor > MINORMASK)
idr_remove(&vfio.group_idr, minor);
return -ENOSPC;
}
return minor;
return idr_alloc(&vfio.group_idr, group, 1, MINORMASK + 1, GFP_KERNEL);
}
static void vfio_free_group_minor(int minor)
......
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