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Btrfs: Remove unnecessary finish_wait() in wait_current_trans() 

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>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Zhao Lei 2010-03-25 12:35:14 +00:00 committed by Chris Mason
parent 90d2c51dbb
commit 471fa17dff
1 changed files with 5 additions and 10 deletions
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15
fs/btrfs/transaction.c
View File

@ -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);
}
}