[Ocfs2-devel] [PATCH] ocfs2: fix deadlock due to wrong locking order

[alex chen <alex.chen@huawei.com>]

On 2014/9/25 14:39, Junxiao Bi wrote:
> Yes, this should be fixed. How about the following fix?
> 
> diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
> index c534cb0..682732f 100644
> --- a/fs/ocfs2/file.c
> +++ b/fs/ocfs2/file.c
> @@ -833,14 +833,17 @@ static int ocfs2_write_zero_page(struct inode
> *inode, u64 abs_from,
>         di->i_mtime = di->i_ctime = cpu_to_le64(inode->i_mtime.tv_sec);
>         di->i_ctime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
>         di->i_mtime_nsec = di->i_ctime_nsec;
> -       ocfs2_journal_dirty(handle, di_bh);
> -       ocfs2_update_inode_fsync_trans(handle, inode, 1);
> +       if (handle) {
> +               ocfs2_journal_dirty(handle, di_bh);
> +               ocfs2_update_inode_fsync_trans(handle, inode, 1);
> +       }
> 
>  out_unlock:
>         unlock_page(page);
>         page_cache_release(page);
>  out_commit_trans:
> -       ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
> +       if (handle)
> +               ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
>  out:
>         return ret;
>  }
> 
> 
> Thanks,
> Junxiao.

OK, thanks.
	--Alex