[PATCH 2/3] btrfs: qgroups, remove unnecessary memset before btrfs_init_work

[jeffm@suse.com]

From: Jeff Mahoney <jeffm@suse.com>

btrfs_init_work clears the work struct except for ->wq, so the memset
before calling btrfs_init_work in qgroup_rescan_init is unnecessary.

We'll also initialize ->wq in btrfs_init_work so that it's obvious.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
---
 fs/btrfs/async-thread.c | 1 +
 fs/btrfs/qgroup.c       | 2 --
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
index d5540749f0e5..c614fb7b9b9d 100644
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -354,6 +354,7 @@ void btrfs_init_work(struct btrfs_work *work, btrfs_work_func_t uniq_func,
 	INIT_WORK(&work->normal_work, uniq_func);
 	INIT_LIST_HEAD(&work->ordered_list);
 	work->flags = 0;
+	work->wq = NULL;
 }
 
 static inline void __btrfs_queue_work(struct __btrfs_workqueue *wq,
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index be491b6c020a..8de423a0c7e3 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -2740,8 +2740,6 @@ qgroup_rescan_init(struct btrfs_fs_info *fs_info, u64 progress_objectid,
 	spin_unlock(&fs_info->qgroup_lock);
 	mutex_unlock(&fs_info->qgroup_rescan_lock);
 
-	memset(&fs_info->qgroup_rescan_work, 0,
-	       sizeof(fs_info->qgroup_rescan_work));
 	btrfs_init_work(&fs_info->qgroup_rescan_work,
 			btrfs_qgroup_rescan_helper,
 			btrfs_qgroup_rescan_worker, NULL, NULL);
-- 
2.12.3