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OpenCloudOS-Kernel
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Merge branch 'for-chris' of git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-work into for-linus 

Conflicts:
	fs/btrfs/transaction.c

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2011-06-17 14:16:13 -04:00
parent 7585717f30 ed0ca14021
commit e038dca803
3 changed files with 14 additions and 3 deletions
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1
fs/btrfs/inode.c
View File

@ -3076,6 +3076,7 @@ int btrfs_unlink_subvol(struct btrfs_trans_handle *trans,
ret = btrfs_update_inode(trans, root, dir);
BUG_ON(ret);
btrfs_free_path(path);
return 0;
}

2
fs/btrfs/ioctl.c
View File

@ -482,8 +482,10 @@ static int create_snapshot(struct btrfs_root *root, struct dentry *dentry,
ret = btrfs_snap_reserve_metadata(trans, pending_snapshot);
BUG_ON(ret);
spin_lock(&root->fs_info->trans_lock);
list_add(&pending_snapshot->list,
&trans->transaction->pending_snapshots);
spin_unlock(&root->fs_info->trans_lock);
if (async_transid) {
*async_transid = trans->transid;
ret = btrfs_commit_transaction_async(trans,

14
fs/btrfs/transaction.c
View File

@ -1298,12 +1298,20 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
schedule_timeout(1);
finish_wait(&cur_trans->writer_wait, &wait);
spin_lock(&root->fs_info->trans_lock);
root->fs_info->trans_no_join = 1;
spin_unlock(&root->fs_info->trans_lock);
} while (atomic_read(&cur_trans->num_writers) > 1 ||
(should_grow && cur_trans->num_joined != joined));
/*
* Ok now we need to make sure to block out any other joins while we
* commit the transaction. We could have started a join before setting
* no_join so make sure to wait for num_writers to == 1 again.
*/
spin_lock(&root->fs_info->trans_lock);
root->fs_info->trans_no_join = 1;
spin_unlock(&root->fs_info->trans_lock);
wait_event(cur_trans->writer_wait,
atomic_read(&cur_trans->num_writers) == 1);
/*
* the reloc mutex makes sure that we stop
* the balancing code from coming in and moving