From: Jeff Liu <jeff.liu@oracle.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH v3] xfs: probe data buffer from page cache for unwritten extents
Date: Tue, 17 Jul 2012 20:27:52 +0800 [thread overview]
Message-ID: <50055A48.50608@oracle.com> (raw)
In-Reply-To: <20120717071802.GA15473@infradead.org>
On 07/17/2012 03:18 PM, Christoph Hellwig wrote:
> On Tue, Jul 03, 2012 at 03:15:56PM +0800, 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.
>
> The patch looks good. But as question by Mark I wonder if it's a good
> idea to just improve xfs_seek_data, but not xfs_seek_hole.
I definitely would like to improve it.
Thanks,
-Jeff
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prev parent reply other threads:[~2012-07-17 12:28 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
2012-07-19 14:39 ` Jie Liu
2012-07-17 7:18 ` Christoph Hellwig
2012-07-17 12:27 ` Jeff Liu [this message]
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