Re: [PATCH] libxfs: Fix a couple of sparse complaints

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On Fri, Jul 13, 2018 at 11:18:31AM +0200, Carlos Maiolino wrote:
> No significant changes, just silence a couple of sparse errors.
> 
> Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
> ---
>  fs/xfs/libxfs/xfs_ag_resv.h | 2 +-
>  fs/xfs/libxfs/xfs_ialloc.c  | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/xfs/libxfs/xfs_ag_resv.h b/fs/xfs/libxfs/xfs_ag_resv.h
> index 4619b554ee90..dc953fc84b2f 100644
> --- a/fs/xfs/libxfs/xfs_ag_resv.h
> +++ b/fs/xfs/libxfs/xfs_ag_resv.h
> @@ -28,7 +28,7 @@ xfs_ag_resv_rmapbt_alloc(
>  	struct xfs_mount	*mp,
>  	xfs_agnumber_t		agno)
>  {
> -	struct xfs_alloc_arg	args = {0};
> +	struct xfs_alloc_arg	args = { NULL };
>  	struct xfs_perag	*pag;
>  
>  	args.len = 1;
> diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
> index 0d968e8143aa..0680fea1d47d 100644
> --- a/fs/xfs/libxfs/xfs_ialloc.c
> +++ b/fs/xfs/libxfs/xfs_ialloc.c
> @@ -2539,7 +2539,7 @@ xfs_agi_verify(
>  		return __this_address;
>  
>  	for (i = 0; i < XFS_AGI_UNLINKED_BUCKETS; i++) {
> -		if (agi->agi_unlinked[i] == NULLAGINO)
> +		if (be32_to_cpu(agi->agi_unlinked[i]) == NULLAGINO)

iirc there's enough macro magic in the kernel that
be32_to_cpu(NULLAGINO) will get encoded as a constant so we don't have
to byteswap every bucket in the agi_unlinked array.

--D

>  			continue;
>  		if (!xfs_verify_ino(mp, be32_to_cpu(agi->agi_unlinked[i])))
>  			return __this_address;
> -- 
> 2.14.3
> 
> --
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