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/ctree.h b/fs/btrfs/ctree.h
index e9bbb53..244fe86 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -23,7 +23,6 @@
#include <linux/mm.h>
#include <linux/highmem.h>
#include <linux/fs.h>
-#include <linux/workqueue.h>
#include <linux/completion.h>
#include <linux/backing-dev.h>
#include <asm/kmap_types.h>
@@ -519,15 +518,14 @@
struct backing_dev_info bdi;
spinlock_t hash_lock;
struct mutex trans_mutex;
+ struct mutex transaction_kthread_mutex;
+ struct mutex cleaner_mutex;
struct mutex alloc_mutex;
struct mutex chunk_mutex;
struct mutex drop_mutex;
struct list_head trans_list;
struct list_head hashers;
struct list_head dead_roots;
- struct list_head end_io_work_list;
- struct work_struct end_io_work;
- spinlock_t end_io_work_lock;
atomic_t nr_async_submits;
/*
@@ -543,13 +541,10 @@
struct btrfs_workers workers;
struct btrfs_workers endio_workers;
struct btrfs_workers submit_workers;
+ struct task_struct *transaction_kthread;
+ struct task_struct *cleaner_kthread;
int thread_pool_size;
-#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
- struct work_struct trans_work;
-#else
- struct delayed_work trans_work;
-#endif
struct kobject super_kobj;
struct completion kobj_unregister;
int do_barriers;