@@ -1681,8 +1681,7 @@ static void end_workqueue_fn(struct btrfs_work *work)
static int cleaner_kthread(void *arg)
{
- struct btrfs_root *root = arg;
- struct btrfs_fs_info *fs_info = root->fs_info;
+ struct btrfs_fs_info *fs_info = arg;
int again;
while (1) {
@@ -1715,7 +1714,7 @@ static int cleaner_kthread(void *arg)
btrfs_run_delayed_iputs(fs_info);
- again = btrfs_clean_one_deleted_snapshot(root);
+ again = btrfs_clean_one_deleted_snapshot(fs_info);
mutex_unlock(&fs_info->cleaner_mutex);
/*
@@ -3161,7 +3160,7 @@ int open_ctree(struct super_block *sb,
goto fail_sysfs;
}
- fs_info->cleaner_kthread = kthread_run(cleaner_kthread, tree_root,
+ fs_info->cleaner_kthread = kthread_run(cleaner_kthread, fs_info,
"btrfs-cleaner");
if (IS_ERR(fs_info->cleaner_kthread))
goto fail_sysfs;
@@ -2338,10 +2338,10 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans)
* because btrfs_commit_super will poke cleaner thread and it will process it a
* few seconds later.
*/
-int btrfs_clean_one_deleted_snapshot(struct btrfs_root *root)
+int btrfs_clean_one_deleted_snapshot(struct btrfs_fs_info *fs_info)
{
+ struct btrfs_root *root;
int ret;
- struct btrfs_fs_info *fs_info = root->fs_info;
spin_lock(&fs_info->trans_lock);
if (list_empty(&fs_info->dead_roots)) {
@@ -193,7 +193,7 @@ int btrfs_wait_for_commit(struct btrfs_fs_info *fs_info, u64 transid);
void btrfs_add_dead_root(struct btrfs_root *root);
int btrfs_defrag_root(struct btrfs_root *root);
-int btrfs_clean_one_deleted_snapshot(struct btrfs_root *root);
+int btrfs_clean_one_deleted_snapshot(struct btrfs_fs_info *fs_info);
int btrfs_commit_transaction(struct btrfs_trans_handle *trans);
int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans,
int wait_for_unblock);
btrfs_clean_one_deleted_snapshot() will grab needed root from fs_info, thus no need to pass a @root parameter. Also refactor its sole caller, cleaner_kthread() to use fs_info other than root. Signed-off-by: Qu Wenruo <wqu@suse.com> --- fs/btrfs/disk-io.c | 7 +++---- fs/btrfs/transaction.c | 4 ++-- fs/btrfs/transaction.h | 2 +- 3 files changed, 6 insertions(+), 7 deletions(-)