From: Dave Chinner <david@fromorbit.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH 5/8] xfs: split direct IO write path from xfs_file_aio_write
Date: Fri, 7 Jan 2011 20:21:36 +1100 [thread overview]
Message-ID: <20110107092136.GM8322@dastard> (raw)
In-Reply-To: <20110107085830.GC10829@infradead.org>
On Fri, Jan 07, 2011 at 03:58:30AM -0500, Christoph Hellwig wrote:
> > +This also clearly indicates that XFS
> > + * does not fall back to buffered IO in the direct IO write path.
>
> I don't think this comment belongs into the function header. It's
> already present in the right place anyway, so it can just be removed.
OK.
> > + xfs_buftarg_t *target = XFS_IS_REALTIME_INODE(ip) ?
> > + mp->m_rtdev_targp : mp->m_ddev_targp;
>
> struct xfs_buftarg, please.
Was copy-n-paste. Will fix.
> > + trace_xfs_file_direct_write(ip, count, iocb->ki_pos, 0);
> > + ret = generic_file_direct_write(iocb, iovp,
> > + &nr_segs, pos, &iocb->ki_pos, count, ocount);
> > +
> > + /* No fallback to buffered IO on errors for XFS. */
> > + return ret;
>
> I'd add an
>
> ASSERT(ret < 0 || ret == count);
>
> here to make sure we don't get problems due to changes in the core
> direct I/O code.
Yup, good idea.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2011-01-07 9:19 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-04 4:48 [PATCH 0/8] xfs: prevent corruption due to overlapping AIO DIO V2 Dave Chinner
2011-01-04 4:48 ` [PATCH 1/8] xfs: ensure sync write errors are returned Dave Chinner
2011-01-05 1:53 ` Alex Elder
2011-01-07 8:45 ` Christoph Hellwig
2011-01-07 9:07 ` Dave Chinner
2011-01-04 4:48 ` [PATCH 2/8] xfs: factor common post-write isize handling code Dave Chinner
2011-01-05 1:54 ` Alex Elder
2011-01-04 4:48 ` [PATCH 4/8] xfs: introduce xfs_rw_lock() helpers for locking the inode Dave Chinner
2011-01-05 1:54 ` Alex Elder
2011-01-05 7:55 ` Dave Chinner
2011-01-04 4:48 ` [PATCH 5/8] xfs: split direct IO write path from xfs_file_aio_write Dave Chinner
2011-01-05 1:54 ` Alex Elder
2011-01-05 7:36 ` Dave Chinner
2011-01-07 8:58 ` Christoph Hellwig
2011-01-07 9:21 ` Dave Chinner [this message]
2011-01-04 4:48 ` [PATCH 6/8] xfs: split buffered " Dave Chinner
2011-01-05 1:55 ` Alex Elder
2011-01-04 4:48 ` [PATCH 7/8] xfs: factor common write setup code Dave Chinner
2011-01-05 1:55 ` Alex Elder
2011-01-07 8:53 ` Christoph Hellwig
2011-01-07 9:20 ` Dave Chinner
2011-01-04 4:48 ` [PATCH 8/8] xfs: serialise unaligned direct IOs Dave Chinner
2011-01-05 1:55 ` Alex Elder
2011-01-05 1:53 ` [PATCH 0/8] xfs: prevent corruption due to overlapping AIO DIO V2 Alex Elder
-- strict thread matches above, loose matches on Subject: below --
2011-01-07 11:30 [PATCH 0/8] xfs: prevent corruption due to overlapping AIO DIO V3 Dave Chinner
2011-01-07 11:30 ` [PATCH 5/8] xfs: split direct IO write path from xfs_file_aio_write Dave Chinner
2011-01-10 19:24 ` Christoph Hellwig
2011-01-10 23:37 [PATCH 0/8] xfs: prevent corruption due to overlapping AIO DIO V4 Dave Chinner
2011-01-10 23:37 ` [PATCH 5/8] xfs: split direct IO write path from xfs_file_aio_write Dave Chinner
2011-01-11 21:44 ` Alex Elder
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