Piteball/android_kernel_google_msm
1
0
Fork 0
mirror of https://github.com/followmsi/android_kernel_google_msm.git synced 2024-11-06 23:17:41 +00:00
Code Issues Projects Releases Wiki Activity

vfio: get rid of open-coding kref_put_mutex

Browse source 
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-08-17 21:27:32 -04:00
parent 8ad5db8a8d
commit 6d2cd3ce81
1 changed files with 2 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
drivers/vfio/vfio.c
View file

@ -264,6 +264,7 @@ static struct vfio_group *vfio_create_group(struct iommu_group *iommu_group)
return group; return group;
} }
/* called with vfio.group_lock held */
static void vfio_group_release(struct kref *kref) static void vfio_group_release(struct kref *kref)
{ {
struct vfio_group *group = container_of(kref, struct vfio_group, kref); struct vfio_group *group = container_of(kref, struct vfio_group, kref);
@ -287,13 +288,7 @@ static void vfio_group_release(struct kref *kref)
static void vfio_group_put(struct vfio_group *group) static void vfio_group_put(struct vfio_group *group)
{ {
mutex_lock(&vfio.group_lock); kref_put_mutex(&group->kref, vfio_group_release, &vfio.group_lock);
/*
* Release needs to unlock to unregister the notifier, so only
* unlock if not released.
*/
if (!kref_put(&group->kref, vfio_group_release))
mutex_unlock(&vfio.group_lock);
} }
/* Assume group_lock or group reference is held */ /* Assume group_lock or group reference is held */