Re: [PATCH 07/18] xfs: treat idx as a cursor in xfs_bmap_del_extent_*

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On Tue, Oct 31, 2017 at 04:22:19PM +0200, Christoph Hellwig wrote:
> Stop poking before and after the index and just increment or decrement
> it while doing our operations on it to prepare for a new extent list
> implementation.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---

Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>

>  fs/xfs/libxfs/xfs_bmap.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
> index 10878c495869..5ba0c0368629 100644
> --- a/fs/xfs/libxfs/xfs_bmap.c
> +++ b/fs/xfs/libxfs/xfs_bmap.c
> @@ -4749,12 +4749,12 @@ xfs_bmap_del_extent_delay(
>  						       del->br_blockcount);
>  
>  		got->br_startblock = nullstartblock((int)got_indlen);
> -		xfs_iext_update_extent(ip, state, *idx, got);
>  
>  		new.br_startoff = del_endoff;
>  		new.br_state = got->br_state;
>  		new.br_startblock = nullstartblock((int)new_indlen);
>  
> +		xfs_iext_update_extent(ip, state, *idx, got);
>  		++*idx;
>  		xfs_iext_insert(ip, *idx, 1, &new, state);
>  
> @@ -4831,13 +4831,13 @@ xfs_bmap_del_extent_cow(
>  		 * Deleting the middle of the extent.
>  		 */
>  		got->br_blockcount = del->br_startoff - got->br_startoff;
> -		xfs_iext_update_extent(ip, state, *idx, got);
>  
>  		new.br_startoff = del_endoff;
>  		new.br_blockcount = got_endoff - del_endoff;
>  		new.br_state = got->br_state;
>  		new.br_startblock = del->br_startblock + del->br_blockcount;
>  
> +		xfs_iext_update_extent(ip, state, *idx, got);
>  		++*idx;
>  		xfs_iext_insert(ip, *idx, 1, &new, state);
>  		break;
> @@ -5053,8 +5053,8 @@ xfs_bmap_del_extent_real(
>  			flags |= xfs_ilog_fext(whichfork);
>  		XFS_IFORK_NEXT_SET(ip, whichfork,
>  			XFS_IFORK_NEXTENTS(ip, whichfork) + 1);
> -		xfs_iext_insert(ip, *idx + 1, 1, &new, state);
>  		++*idx;
> +		xfs_iext_insert(ip, *idx, 1, &new, state);
>  		break;
>  	}
>  
> -- 
> 2.14.2
> 
> --
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