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Re: [PATCH v6 07/10] xfs: add inode id filtering to eofblocks scan

To: Mark Tinguely <tinguely@xxxxxxx>
Subject: Re: [PATCH v6 07/10] xfs: add inode id filtering to eofblocks scan
From: Brian Foster <bfoster@xxxxxxxxxx>
Date: Tue, 06 Nov 2012 12:57:30 -0500
Cc: xfs@xxxxxxxxxxx
In-reply-to: <50993DAC.9070100@xxxxxxx>
References: <1352213447-59791-1-git-send-email-bfoster@xxxxxxxxxx> <1352213447-59791-8-git-send-email-bfoster@xxxxxxxxxx> <50993DAC.9070100@xxxxxxx>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120911 Thunderbird/15.0.1
On 11/06/2012 11:41 AM, Mark Tinguely wrote:
> On 11/06/12 08:50, Brian Foster wrote:
>> Support inode ID filtering in the eofblocks scan. The caller must
>> set the associated XFS_EOF_FLAGS_*ID bit and ID field.
>> Signed-off-by: Brian Foster<bfoster@xxxxxxxxxx>
>> ---
> turn 0;
>> +    if (eofb&&
>         vvvvvvv
>> +        (eofb->eof_flags&  (XFS_EOF_FLAGS_UID|XFS_EOF_FLAGS_GID|
>> +                   XFS_EOF_FLAGS_PRID))&&
>         ^^^^^^
> Not a big deal but wouldn't xfs_inode_match_id() also check these flags?

Yes it does, but at this point in the patch xfs_inode_match_id() is
implemented in an opt-in way that would alter the codepath (i.e., it
would always return 0 if no ID flags were specified and skip every inode).

I thought about defining another directive to combine the ID flags and
clean that up a bit, but as you probably noticed, the following patch
reimplements xfs_inode_match_id() such that it opts-out inodes and
allows this check in xfs_inode_free_eofblocks() to go away.


>> +        !xfs_inode_match_id(ip, eofb))
>> +        return 0;
>> +
> Consider this
> Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>

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