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authorLinus Torvalds <torvalds@linux-foundation.org>2013-01-20 16:44:28 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-01-20 16:44:28 -0800
commit226364766f936d249e408de03821468c1bf11dda (patch)
tree3b4feabb40a87f311ae92bb973c18293d05597e8 /drivers/block
parent3a142ed962958d3063f648738a3384ab90017100 (diff)
parent1fb9341ac34825aa40354e74d9a2c69df7d2c304 (diff)
downloadlinaro-lsk-226364766f936d249e408de03821468c1bf11dda.tar.gz
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull module fixes and a virtio block fix from Rusty Russell: "Various minor fixes, but a slightly more complex one to fix the per-cpu overload problem introduced recently by kvm id changes." * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: module: put modules in list much earlier. module: add new state MODULE_STATE_UNFORMED. module: prevent warning when finit_module a 0 sized file virtio-blk: Don't free ida when disk is in use
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/virtio_blk.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 9d8409c0208..8ad21a25bc0 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -889,6 +889,7 @@ static void virtblk_remove(struct virtio_device *vdev)
{
struct virtio_blk *vblk = vdev->priv;
int index = vblk->index;
+ int refc;
/* Prevent config work handler from accessing the device. */
mutex_lock(&vblk->config_lock);
@@ -903,11 +904,15 @@ static void virtblk_remove(struct virtio_device *vdev)
flush_work(&vblk->config_work);
+ refc = atomic_read(&disk_to_dev(vblk->disk)->kobj.kref.refcount);
put_disk(vblk->disk);
mempool_destroy(vblk->pool);
vdev->config->del_vqs(vdev);
kfree(vblk);
- ida_simple_remove(&vd_index_ida, index);
+
+ /* Only free device id if we don't have any users */
+ if (refc == 1)
+ ida_simple_remove(&vd_index_ida, index);
}
#ifdef CONFIG_PM