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Re: Rename+crash behaviour of btrfs - nearly ext3!

On Mon, May 17, 2010 at 08:04:21PM +0200, Jakob Unterwurzacher wrote:
> Hi!
> Following Ubuntu's dpkg+ext4 problems I wanted to see if btrfs would
> solve them all. And it nearly does! Now I wonder if the remaining 0.2
> seconds window of exposing 0-size files could be closed too.

That should be a zero second window, we try to force things to disk
during renames.

Could you please try this patch:

diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index c9f1020..9370a71 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -806,7 +806,7 @@ int btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
 	 * if this file hasn't been changed since the last transaction
 	 * commit, we can safely return without doing anything
-	if (last_mod < root->fs_info->last_trans_committed)
+	if (0 && last_mod < root->fs_info->last_trans_committed)
 		return 0;
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