Replace the fs_info->delayed_workers with the newly created
btrfs_workqueue.

Signed-off-by: Qu Wenruo <[email protected]>
---
Changelog:
v1->v2:
  None
v2->v3:
  None
v3->v4:
  - Use the simplified btrfs_alloc_workqueue API.
---
 fs/btrfs/ctree.h         |  2 +-
 fs/btrfs/delayed-inode.c | 10 +++++-----
 fs/btrfs/disk-io.c       | 10 ++++------
 fs/btrfs/super.c         |  2 +-
 4 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 845615e..698cebc 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1509,7 +1509,7 @@ struct btrfs_fs_info {
         * for the sys_munmap function call path
         */
        struct btrfs_workqueue_struct *fixup_workers;
-       struct btrfs_workers delayed_workers;
+       struct btrfs_workqueue_struct *delayed_workers;
        struct task_struct *transaction_kthread;
        struct task_struct *cleaner_kthread;
        int thread_pool_size;
diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index 8d292fb..e4ad5ea 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -1260,10 +1260,10 @@ void btrfs_remove_delayed_node(struct inode *inode)
 struct btrfs_async_delayed_work {
        struct btrfs_delayed_root *delayed_root;
        int nr;
-       struct btrfs_work work;
+       struct btrfs_work_struct work;
 };
 
-static void btrfs_async_run_delayed_root(struct btrfs_work *work)
+static void btrfs_async_run_delayed_root(struct btrfs_work_struct *work)
 {
        struct btrfs_async_delayed_work *async_work;
        struct btrfs_delayed_root *delayed_root;
@@ -1361,11 +1361,11 @@ static int btrfs_wq_run_delayed_node(struct 
btrfs_delayed_root *delayed_root,
                return -ENOMEM;
 
        async_work->delayed_root = delayed_root;
-       async_work->work.func = btrfs_async_run_delayed_root;
-       async_work->work.flags = 0;
+       btrfs_init_work(&async_work->work, btrfs_async_run_delayed_root,
+                       NULL, NULL);
        async_work->nr = nr;
 
-       btrfs_queue_worker(&root->fs_info->delayed_workers, &async_work->work);
+       btrfs_queue_work(root->fs_info->delayed_workers, &async_work->work);
        return 0;
 }
 
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index e5dec5a..9053df8 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2017,7 +2017,7 @@ static void btrfs_stop_all_workers(struct btrfs_fs_info 
*fs_info)
        btrfs_destroy_workqueue(fs_info->endio_write_workers);
        btrfs_destroy_workqueue(fs_info->endio_freespace_worker);
        btrfs_destroy_workqueue(fs_info->submit_workers);
-       btrfs_stop_workers(&fs_info->delayed_workers);
+       btrfs_destroy_workqueue(fs_info->delayed_workers);
        btrfs_destroy_workqueue(fs_info->caching_workers);
        btrfs_destroy_workqueue(fs_info->readahead_workers);
        btrfs_destroy_workqueue(fs_info->flush_workers);
@@ -2515,9 +2515,8 @@ int open_ctree(struct super_block *sb,
                btrfs_alloc_workqueue("endio-write", flags, max_active, 2);
        fs_info->endio_freespace_worker =
                btrfs_alloc_workqueue("freespace-write", flags, max_active, 0);
-       btrfs_init_workers(&fs_info->delayed_workers, "delayed-meta",
-                          fs_info->thread_pool_size,
-                          &fs_info->generic_worker);
+       fs_info->delayed_workers =
+               btrfs_alloc_workqueue("delayed-meta", flags, max_active, 0);
        fs_info->readahead_workers =
                btrfs_alloc_workqueue("readahead", flags, max_active, 2);
        btrfs_init_workers(&fs_info->qgroup_rescan_workers, "qgroup-rescan", 1,
@@ -2528,7 +2527,6 @@ int open_ctree(struct super_block *sb,
         * return -ENOMEM if any of these fail.
         */
        ret = btrfs_start_workers(&fs_info->generic_worker);
-       ret |= btrfs_start_workers(&fs_info->delayed_workers);
        ret |= btrfs_start_workers(&fs_info->qgroup_rescan_workers);
        if (ret) {
                err = -ENOMEM;
@@ -2541,7 +2539,7 @@ int open_ctree(struct super_block *sb,
              fs_info->endio_write_workers && fs_info->endio_raid56_workers &&
              fs_info->endio_freespace_worker && fs_info->rmw_workers &&
              fs_info->caching_workers && fs_info->readahead_workers &&
-             fs_info->fixup_workers)) {
+             fs_info->fixup_workers && fs_info->delayed_workers)) {
                err = -ENOMEM;
                goto fail_sb_buffer;
        }
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index f7fd00c..83d3477 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1255,7 +1255,7 @@ static void btrfs_resize_thread_pool(struct btrfs_fs_info 
*fs_info,
                                new_pool_size);
        btrfs_workqueue_set_max(fs_info->endio_write_workers, new_pool_size);
        btrfs_workqueue_set_max(fs_info->endio_freespace_worker, new_pool_size);
-       btrfs_set_max_workers(&fs_info->delayed_workers, new_pool_size);
+       btrfs_workqueue_set_max(fs_info->delayed_workers, new_pool_size);
        btrfs_workqueue_set_max(fs_info->readahead_workers, new_pool_size);
        btrfs_set_max_workers(&fs_info->scrub_wr_completion_workers,
                              new_pool_size);
-- 
1.8.5.1

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