Re: [RFC PATCH v4 6/8] xfs: correct the truncate blocksize of realtime inode

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On 2024/5/31 21:36, Christoph Hellwig wrote:
> On Wed, May 29, 2024 at 05:52:04PM +0800, Zhang Yi wrote:
>> +	if (xfs_inode_has_bigrtalloc(ip))
>> +		first_unmap_block = xfs_rtb_roundup_rtx(mp, first_unmap_block);
> 
> Given that first_unmap_block is a xfs_fileoff_t and not a xfs_rtblock_t,
> this looks a bit confusing.  I'd suggest to just open code the
> arithmetics in xfs_rtb_roundup_rtx.  For future proofing my also
> use xfs_inode_alloc_unitsize() as in the hunk below instead of hard
> coding the rtextsize.  I.e.:
> 
> 	first_unmap_block = XFS_B_TO_FSB(mp,
> 		roundup_64(new_size, xfs_inode_alloc_unitsize(ip)));
> 
Sure, makes sense to me.

Thanks,
Yi.





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