From: Mark Tinguely <tinguely@sgi.com>
To: jeff.liu@oracle.com
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH v3] xfs: probe data buffer from page cache for unwritten extents
Date: Mon, 09 Jul 2012 11:41:00 -0500 [thread overview]
Message-ID: <4FFB099C.6020809@sgi.com> (raw)
In-Reply-To: <4FF29C2C.2000407@oracle.com>
On 07/03/12 02:15, Jeff Liu wrote:
> Hello,
>
> This is v3 of the patch.
>
> We can trigger BUG() in xfs_seek_data() if met two unwritten without data or hole extents at last version.
> So making the extents map reading in loop could solve it.
>
> Sorry, Am not yet try the repeated holes scenario according to Dave's comments as lack of X64 test env, still
> waiting for it ready. But this patch is already too long delayed, I have worked it out one weeks ago.
> So I'd like to post it because of it could handle repeated hole/unwritten extents well in a loop, and I also improved
> xfstests:286 with those cases for the verification, will post it soon.
>
> v2->v3:
> Tested by Mark, hit BUG() for continuous unwritten extents without data wrote.
> * xfs_seek_data(), remove BUG() and having extents map search in loop.
>
> v1->v2:
> suggested by Mark.
> * xfs_has_unwritten_buffer(), use the input offset instead of bmap->br_startoff to
> calculate page index for data buffer probing.
>
> Thanks,
> -Jeff
>
>
> Signed-off-by: Jie Liu<jeff.liu@oracle.com>
>
> ---
Nice. Up to refining xfs_seek_hole()?
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
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next prev parent reply other threads:[~2012-07-09 16:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-03 7:15 [PATCH v3] xfs: probe data buffer from page cache for unwritten extents Jeff Liu
2012-07-09 16:41 ` Mark Tinguely [this message]
2012-07-19 14:39 ` Jie Liu
2012-07-17 7:18 ` Christoph Hellwig
2012-07-17 12:27 ` Jeff Liu
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