Re: per-file NOCOW in 3.7

[Liu Bo <bo.li.liu@oracle.com>]

On Wed, Nov 21, 2012 at 06:25:11PM +0100, David Sterba wrote:
> On Wed, Nov 21, 2012 at 10:48:08AM -0500, Marios Titas wrote:
> > According to the tentative changelog in the wiki, 3.7 will properly
> > support per-file NOCOW. I think this is misleading. In particular, it
> > still does not work correctly in the case when the NOCOW flag of a new
> > flag is being inherited from the directory. I think it would be better
> > to remove that item from the changelog until the the fix [1] is
> > merged.
> > [1] https://patchwork.kernel.org/patch/1438431/
> 
> You're right, the patch is not in 3.7-rc nor in btrfs-next, and fixes a
> real bug.
> 
> Technically it is a regresssion within the 3.7 cycle (so it could even
> go to a late -rc), in any case it's a small change that could also go
> through the stable tree.
> 
> david

Well, I'll resend it for merge with Marios's reported-by and your Reviewed-by.

Don't worry, it's a good fix though.

thanks,
liubo