Btrfs: Replace the transaction work queue with kthreads
This creates one kthread for commits and one kthread for
deleting old snapshots. All the work queues are removed.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 869864d..4e7cee2 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -271,13 +271,17 @@
list_for_each(cur, head) {
device = list_entry(cur, struct btrfs_device, dev_list);
if (!device->in_fs_metadata) {
- if (device->bdev) {
- close_bdev_excl(device->bdev);
- fs_devices->open_devices--;
- }
+ struct block_device *bdev;
list_del(&device->dev_list);
list_del(&device->dev_alloc_list);
fs_devices->num_devices--;
+ if (device->bdev) {
+ bdev = device->bdev;
+ fs_devices->open_devices--;
+ mutex_unlock(&uuid_mutex);
+ close_bdev_excl(bdev);
+ mutex_lock(&uuid_mutex);
+ }
kfree(device->name);
kfree(device);
goto again;