linux-ext4 - Re: [PATCH 2/3] xfs: don't use ioends for direct write completions

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Message-ID: <20160205223626.GN459@dastard>
Date:	Sat, 6 Feb 2016 09:36:26 +1100
From:	Dave Chinner <david@...morbit.com>
To:	"Darrick J. Wong" <darrick.wong@...cle.com>
Cc:	Christoph Hellwig <hch@....de>, linux-fsdevel@...r.kernel.org,
	xfs@....sgi.com, linux-ext4@...r.kernel.org,
	ocfs2-devel@....oracle.com
Subject: Re: [PATCH 2/3] xfs: don't use ioends for direct write completions

On Fri, Feb 05, 2016 at 01:57:18PM -0800, Darrick J. Wong wrote:
> On Wed, Feb 03, 2016 at 07:40:15PM +0100, Christoph Hellwig wrote:
> > -	struct kiocb		*iocb,
> > -	loff_t			offset,
> > -	ssize_t			size,
> > -	void			*private)
> > -{
> > -	struct inode		*inode = file_inode(iocb->ki_filp);
> > -	struct xfs_ioend	*ioend = private;
> > +		trace_xfs_end_io_direct_write_append(ip, offset, size);
> >  
> > -	if (size <= 0)
> > -		return 0;
> > -
> > -	trace_xfs_gbmap_direct_endio(XFS_I(inode), offset, size,
> > -				     ioend ? ioend->io_type : 0, NULL);
> > -
> > -	if (!ioend) {
> > -		ASSERT(offset + size <= i_size_read(inode));
> > -		return 0;
> > +		tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS);
> > +		error = xfs_trans_reserve(tp, &M_RES(mp)->tr_fsyncts, 0, 0);
> > +		if (error) {
> > +			xfs_trans_cancel(tp);
> > +			return error;
> > +		}
> > +		error = xfs_setfilesize(ip, tp, offset, size);
> 
> Don't we need a xfs_trans_commit() here?

No, xfs_setfilesize() does that.

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com
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