Re: [PATCH 1/2] xfs: don't truncate attribute extents if no extents exist

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On Fri, Jun 19, 2015 at 08:14:21AM -0700, Christoph Hellwig wrote:
> > A '-p 2' fsstress run to ENOSPC on a relatively small fs (1GB)
> > reproduces these problems.
> 
> Any chance to add this test case to xfstests?
> 

I think so. I'll look into it.

> >  	/* invalidate and truncate the attribute fork extents */
> > -	if (dp->i_d.di_aformat != XFS_DINODE_FMT_LOCAL) {
> > +	if (xfs_inode_hasattr(dp) &&
> > +	    dp->i_d.di_aformat != XFS_DINODE_FMT_LOCAL) {
> 
> And please add a comment describing the condition here, especially
> as xfs_inode_hasattr doesn't have a very descriptive name.
> 

How about this?

        /*
         * Invalidate and truncate the attribute fork extents. Make sure the
         * fork actually has attributes as otherwise the invalidation has no
         * blocks to read and returns an error. In this case, just do the fork
         * removal below.
         */

Brian

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