Re: [PATCH] libxfs: Remove pointless crc flag check from xfs_agfl_verify

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On Thu, Jan 16, 2025 at 05:32:56PM +0100, cem@xxxxxxxxxx wrote:
> From: Carlos Maiolino <cem@xxxxxxxxxx>
> 
> Just a small clean up.
> xfs_agfl_verify() is only called from xfs_agfl_{read,write}_verify()
> helpers.
> Both of them already check if crc is enabled, there seems to be no
> reason for checking for it again.

...but it does get called via ->verify_struct, which in turn is called
by online fsck and buffer log item "precommit" if
CONFIG_XFS_DEBUG_EXPENSIVE=y, so please don't remove this check.

--D

> Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
> ---
>  fs/xfs/libxfs/xfs_alloc.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
> index 3d33e17f2e5c..619e6d6570f8 100644
> --- a/fs/xfs/libxfs/xfs_alloc.c
> +++ b/fs/xfs/libxfs/xfs_alloc.c
> @@ -787,9 +787,6 @@ xfs_agfl_verify(
>  	__be32		*agfl_bno = xfs_buf_to_agfl_bno(bp);
>  	int		i;
>  
> -	if (!xfs_has_crc(mp))
> -		return NULL;
> -
>  	if (!xfs_verify_magic(bp, agfl->agfl_magicnum))
>  		return __this_address;
>  	if (!uuid_equal(&agfl->agfl_uuid, &mp->m_sb.sb_meta_uuid))
> -- 
> 2.47.1
> 
> 




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