[PATCH 1/2] btrfs: Cleanup the btrfs_workqueue related function type

[quwen...@cn.fujitsu.com]

The new btrfs_workqueue still use open-coded function defition,
this patch will change them into btrfs_func_t type which is much the
same as kernel workqueue.

Signed-off-by: Qu Wenruo <quwen...@cn.fujitsu.com>
---
 fs/btrfs/async-thread.c |  6 +++---
 fs/btrfs/async-thread.h | 20 +++++++++++---------
 2 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
index a709585..d8c07e5 100644
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -255,9 +255,9 @@ static void normal_work_helper(struct work_struct *arg)
 }
 
 void btrfs_init_work(struct btrfs_work *work,
-                    void (*func)(struct btrfs_work *),
-                    void (*ordered_func)(struct btrfs_work *),
-                    void (*ordered_free)(struct btrfs_work *))
+                    btrfs_func_t func,
+                    btrfs_func_t ordered_func,
+                    btrfs_func_t ordered_free)
 {
        work->func = func;
        work->ordered_func = ordered_func;
diff --git a/fs/btrfs/async-thread.h b/fs/btrfs/async-thread.h
index 08d7174..0a891cd 100644
--- a/fs/btrfs/async-thread.h
+++ b/fs/btrfs/async-thread.h
@@ -23,11 +23,13 @@
 struct btrfs_workqueue;
 /* Internal use only */
 struct __btrfs_workqueue;
+struct btrfs_work;
+typedef void (*btrfs_func_t)(struct btrfs_work *arg);
 
 struct btrfs_work {
-       void (*func)(struct btrfs_work *arg);
-       void (*ordered_func)(struct btrfs_work *arg);
-       void (*ordered_free)(struct btrfs_work *arg);
+       btrfs_func_t func;
+       btrfs_func_t ordered_func;
+       btrfs_func_t ordered_free;
 
        /* Don't touch things below */
        struct work_struct normal_work;
@@ -37,13 +39,13 @@ struct btrfs_work {
 };
 
 struct btrfs_workqueue *btrfs_alloc_workqueue(char *name,
-                                                    int flags,
-                                                    int max_active,
-                                                    int thresh);
+                                             int flags,
+                                             int max_active,
+                                             int thresh);
 void btrfs_init_work(struct btrfs_work *work,
-                    void (*func)(struct btrfs_work *),
-                    void (*ordered_func)(struct btrfs_work *),
-                    void (*ordered_free)(struct btrfs_work *));
+                    btrfs_func_t func,
+                    btrfs_func_t ordered_func,
+                    btrfs_func_t ordered_free);
 void btrfs_queue_work(struct btrfs_workqueue *wq,
                      struct btrfs_work *work);
 void btrfs_destroy_workqueue(struct btrfs_workqueue *wq);
-- 
1.9.0
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