Re: [PATCH v2] xfs: Check the return value of xfs_trans_get_buf()

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On Tue, 2011-09-20 at 11:00 -0400, Christoph Hellwig wrote:
> On Tue, Sep 20, 2011 at 08:56:55AM -0500, Chandra Seetharaman wrote:
> > --- a/fs/xfs/xfs_attr_leaf.c
> > +++ b/fs/xfs/xfs_attr_leaf.c
> > @@ -2948,6 +2948,8 @@ xfs_attr_leaf_freextent(xfs_trans_t **trans, xfs_inode_t *dp,
> >  			bp = xfs_trans_get_buf(*trans,
> >  					dp->i_mount->m_ddev_targp,
> >  					dblkno, dblkcnt, XBF_LOCK);
> > +			if (!bp)
> > +				return ENOMEM;
> >  			xfs_trans_binval(*trans, bp);
> 
> xfs_trans_binval only really does anything if the buffer was in memory.
> 
> We have a few callers using that patterm, and I think they should simply
> switch to not reading the buffer in if it's not there yet, e.g.
> using something like an xfs_trans_incore.

Hi Christoph,

I do not understand. Can you elaborate on what needs to be done.

Thanks

Chandra
> 


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