Miao Xie
2010-Mar-25 12:35 UTC
[PATCH 13/18] btrfs: Remove unnecessary finish_wait() in wait_current_trans()
From: Zhao Lei <zhaolei@cn.fujitsu.com>
We only need to call finish_wait() after wait loop.
By the way, this patch makes code of waiting loop similar to
example in wait.h(no functional change)
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
---
fs/btrfs/transaction.c | 15 +++++----------
1 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 2d654c1..4305428 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -147,18 +147,13 @@ static void wait_current_trans(struct btrfs_root *root)
while (1) {
prepare_to_wait(&root->fs_info->transaction_wait, &wait,
TASK_UNINTERRUPTIBLE);
- if (cur_trans->blocked) {
- mutex_unlock(&root->fs_info->trans_mutex);
- schedule();
- mutex_lock(&root->fs_info->trans_mutex);
- finish_wait(&root->fs_info->transaction_wait,
- &wait);
- } else {
- finish_wait(&root->fs_info->transaction_wait,
- &wait);
+ if (!cur_trans->blocked)
break;
- }
+ mutex_unlock(&root->fs_info->trans_mutex);
+ schedule();
+ mutex_lock(&root->fs_info->trans_mutex);
}
+ finish_wait(&root->fs_info->transaction_wait, &wait);
put_transaction(cur_trans);
}
}
--
1.6.5.2
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