Re: [PATCH] libxfs: fix confusing xfs_extent_item variable names

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On Wed, May 10, 2023 at 12:56:17PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@xxxxxxxxxx>
> 
> Change the name of all pointers to xfs_extent_item structures to "xefi"
> to make the name consistent and because the current selections ("new"
> and "free") mean other things in C.
> 
> Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>

Sounds good, thanks!
Reviewed-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>

> ---
>  libxfs/defer_item.c |   41 +++++++++++++++++++++++------------------
>  1 file changed, 23 insertions(+), 18 deletions(-)
> 
> diff --git a/libxfs/defer_item.c b/libxfs/defer_item.c
> index b95b54e5..2e9912f8 100644
> --- a/libxfs/defer_item.c
> +++ b/libxfs/defer_item.c
> @@ -80,18 +80,20 @@ xfs_extent_free_finish_item(
>  	struct xfs_btree_cur		**state)
>  {
>  	struct xfs_owner_info		oinfo = { };
> -	struct xfs_extent_free_item	*free;
> +	struct xfs_extent_free_item	*xefi;
>  	int				error;
> 
> -	free = container_of(item, struct xfs_extent_free_item, xefi_list);
> -	oinfo.oi_owner = free->xefi_owner;
> -	if (free->xefi_flags & XFS_EFI_ATTR_FORK)
> +	xefi = container_of(item, struct xfs_extent_free_item, xefi_list);
> +
> +	oinfo.oi_owner = xefi->xefi_owner;
> +	if (xefi->xefi_flags & XFS_EFI_ATTR_FORK)
>  		oinfo.oi_flags |= XFS_OWNER_INFO_ATTR_FORK;
> -	if (free->xefi_flags & XFS_EFI_BMBT_BLOCK)
> +	if (xefi->xefi_flags & XFS_EFI_BMBT_BLOCK)
>  		oinfo.oi_flags |= XFS_OWNER_INFO_BMBT_BLOCK;
> -	error = xfs_free_extent(tp, free->xefi_startblock,
> -		free->xefi_blockcount, &oinfo, XFS_AG_RESV_NONE);
> -	kmem_cache_free(xfs_extfree_item_cache, free);
> +	error = xfs_free_extent(tp, xefi->xefi_startblock,
> +			xefi->xefi_blockcount, &oinfo, XFS_AG_RESV_NONE);
> +
> +	kmem_cache_free(xfs_extfree_item_cache, xefi);
>  	return error;
>  }
> 
> @@ -107,10 +109,11 @@ STATIC void
>  xfs_extent_free_cancel_item(
>  	struct list_head		*item)
>  {
> -	struct xfs_extent_free_item	*free;
> +	struct xfs_extent_free_item	*xefi;
> 
> -	free = container_of(item, struct xfs_extent_free_item, xefi_list);
> -	kmem_cache_free(xfs_extfree_item_cache, free);
> +	xefi = container_of(item, struct xfs_extent_free_item, xefi_list);
> +
> +	kmem_cache_free(xfs_extfree_item_cache, xefi);
>  }
> 
>  const struct xfs_defer_op_type xfs_extent_free_defer_type = {
> @@ -134,25 +137,27 @@ xfs_agfl_free_finish_item(
>  {
>  	struct xfs_owner_info		oinfo = { };
>  	struct xfs_mount		*mp = tp->t_mountp;
> -	struct xfs_extent_free_item	*free;
> +	struct xfs_extent_free_item	*xefi;
>  	struct xfs_buf			*agbp;
>  	struct xfs_perag		*pag;
>  	int				error;
>  	xfs_agnumber_t			agno;
>  	xfs_agblock_t			agbno;
> 
> -	free = container_of(item, struct xfs_extent_free_item, xefi_list);
> -	ASSERT(free->xefi_blockcount == 1);
> -	agno = XFS_FSB_TO_AGNO(mp, free->xefi_startblock);
> -	agbno = XFS_FSB_TO_AGBNO(mp, free->xefi_startblock);
> -	oinfo.oi_owner = free->xefi_owner;
> +	xefi = container_of(item, struct xfs_extent_free_item, xefi_list);
> +
> +	ASSERT(xefi->xefi_blockcount == 1);
> +	agno = XFS_FSB_TO_AGNO(mp, xefi->xefi_startblock);
> +	agbno = XFS_FSB_TO_AGBNO(mp, xefi->xefi_startblock);
> +	oinfo.oi_owner = xefi->xefi_owner;
> 
>  	pag = libxfs_perag_get(mp, agno);
>  	error = xfs_alloc_read_agf(pag, tp, 0, &agbp);
>  	if (!error)
>  		error = xfs_free_agfl_block(tp, agno, agbno, agbp, &oinfo);
>  	libxfs_perag_put(pag);
> -	kmem_cache_free(xfs_extfree_item_cache, free);
> +
> +	kmem_cache_free(xfs_extfree_item_cache, xefi);
>  	return error;
>  }
> 

-- 
Carlos Maiolino



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