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From: Eric Sandeen <sandeen@redhat.com>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: linux-xfs <linux-xfs@vger.kernel.org>
Subject: Re: [PATCH] xfs_repair: stop using ->data_entry_p()
Date: Mon, 20 Jan 2020 08:29:17 -0600	[thread overview]
Message-ID: <57ab702d-0a66-8323-5e87-08aa315cf9c7@redhat.com> (raw)
In-Reply-To: <20200118043947.GO8257@magnolia>

On 1/17/20 10:39 PM, Darrick J. Wong wrote:
> On Fri, Jan 17, 2020 at 05:17:11PM -0600, Eric Sandeen wrote:
>> The ->data_entry_p() op went away in v5.5 kernelspace, so rework
>> xfs_repair to use ->data_entry_offset instead, in preparation
>> for the v5.5 libxfs backport.
>>
>> This could later be cleaned up to use offsets as was done
>> in kernel commit 8073af5153c for example.
> 
> See, now that you've said that, I start wondering why not do that?

Because this is the fast/safe path to getting the libxfs merge done IMHO ;)

...


>> @@ -1834,7 +1834,7 @@ longform_dir2_entry_check_data(
>>  			       (dep->name[0] == '.' && dep->namelen == 1));
>>  			add_inode_ref(current_irec, current_ino_offset);
>>  			if (da_bno != 0 ||
>> -			    dep != M_DIROPS(mp)->data_entry_p(d)) {
>> +			    dep != (void *)d + M_DIROPS(mp)->data_entry_offset) {
> 
> Er.... void pointer arithmetic?

er, let me take another look at that.

-eric



  reply	other threads:[~2020-01-20 14:29 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-17 23:17 [PATCH] xfs_repair: stop using ->data_entry_p() Eric Sandeen
2020-01-18  4:39 ` Darrick J. Wong
2020-01-20 14:29   ` Eric Sandeen [this message]
2020-01-21 18:37     ` Darrick J. Wong
2020-01-22  0:41       ` Darrick J. Wong
2020-01-20  8:58 ` Christoph Hellwig

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