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switch vfio_group_set_container() to fget_light()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-08-27 12:14:05 -04:00
parent 8319aa9127
commit 1d3653a79c
1 changed files with 4 additions and 4 deletions
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8
drivers/vfio/vfio.c
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@ -1017,18 +1017,18 @@ static int vfio_group_set_container(struct vfio_group *group, int container_fd)
struct file *filep; struct file *filep;
struct vfio_container *container; struct vfio_container *container;
struct vfio_iommu_driver *driver; struct vfio_iommu_driver *driver;
int ret = 0; int ret = 0, fput_needed;
if (atomic_read(&group->container_users)) if (atomic_read(&group->container_users))
return -EINVAL; return -EINVAL;
filep = fget(container_fd); filep = fget_light(container_fd, &fput_needed);
if (!filep) if (!filep)
return -EBADF; return -EBADF;
/* Sanity check, is this really our fd? */ /* Sanity check, is this really our fd? */
if (filep->f_op != &vfio_fops) { if (filep->f_op != &vfio_fops) {
fput(filep); fput_light(filep, fput_needed);
return -EINVAL; return -EINVAL;
} }
@ -1054,7 +1054,7 @@ static int vfio_group_set_container(struct vfio_group *group, int container_fd)
unlock_out: unlock_out:
mutex_unlock(&container->group_lock); mutex_unlock(&container->group_lock);
fput(filep); fput_light(filep, fput_needed);
return ret; return ret;
} }