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Code Issues Releases Wiki Activity

Btrfs: use wait_event() 

Use wait_event() when possible to avoid code duplication.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Li Zefan 2011-07-14 03:17:00 +00:00 committed by Chris Mason
parent e55179b3d7
commit 72d63ed642
1 changed files with 7 additions and 52 deletions
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59
fs/btrfs/transaction.c
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@ -216,17 +216,11 @@ static void wait_current_trans(struct btrfs_root *root)
spin_lock(&root->fs_info->trans_lock);
cur_trans = root->fs_info->running_transaction;
if (cur_trans && cur_trans->blocked) {
DEFINE_WAIT(wait);
atomic_inc(&cur_trans->use_count);
spin_unlock(&root->fs_info->trans_lock);
while (1) {
prepare_to_wait(&root->fs_info->transaction_wait, &wait,
TASK_UNINTERRUPTIBLE);
if (!cur_trans->blocked)
break;
schedule();
}
finish_wait(&root->fs_info->transaction_wait, &wait);
wait_event(root->fs_info->transaction_wait,
!cur_trans->blocked);
put_transaction(cur_trans);
} else {
spin_unlock(&root->fs_info->trans_lock);
@ -360,15 +354,7 @@ struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *root
static noinline int wait_for_commit(struct btrfs_root *root,
struct btrfs_transaction *commit)
{
DEFINE_WAIT(wait);
while (!commit->commit_done) {
prepare_to_wait(&commit->commit_wait, &wait,
TASK_UNINTERRUPTIBLE);
if (commit->commit_done)
break;
schedule();
}
finish_wait(&commit->commit_wait, &wait);
wait_event(commit->commit_wait, commit->commit_done);
return 0;
}
@ -1085,22 +1071,7 @@ int btrfs_transaction_blocked(struct btrfs_fs_info *info)
static void wait_current_trans_commit_start(struct btrfs_root *root,
struct btrfs_transaction *trans)
{
DEFINE_WAIT(wait);
if (trans->in_commit)
return;
while (1) {
prepare_to_wait(&root->fs_info->transaction_blocked_wait, &wait,
TASK_UNINTERRUPTIBLE);
if (trans->in_commit) {
finish_wait(&root->fs_info->transaction_blocked_wait,
&wait);
break;
}
schedule();
finish_wait(&root->fs_info->transaction_blocked_wait, &wait);
}
wait_event(root->fs_info->transaction_blocked_wait, trans->in_commit);
}
/*
@ -1110,24 +1081,8 @@ static void wait_current_trans_commit_start(struct btrfs_root *root,
static void wait_current_trans_commit_start_and_unblock(struct btrfs_root *root,
struct btrfs_transaction *trans)
{
DEFINE_WAIT(wait);
if (trans->commit_done || (trans->in_commit && !trans->blocked))
return;
while (1) {
prepare_to_wait(&root->fs_info->transaction_wait, &wait,
TASK_UNINTERRUPTIBLE);
if (trans->commit_done ||
(trans->in_commit && !trans->blocked)) {
finish_wait(&root->fs_info->transaction_wait,
&wait);
break;
}
schedule();
finish_wait(&root->fs_info->transaction_wait,
&wait);
}
wait_event(root->fs_info->transaction_wait,
trans->commit_done || (trans->in_commit && !trans->blocked));
}
/*