Re: [RFC PATCH 08/11] xfs: don't enable large folios on fs-verity sealed inode

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On Tue, Dec 13, 2022 at 06:29:32PM +0100, Andrey Albershteyn wrote:
> fs-verity doesn't work with large folios. Don't enable large folios
> on those inode which are already sealed with fs-verity (indicated by
> diflag).
> 
> Signed-off-by: Andrey Albershteyn <aalbersh@xxxxxxxxxx>
> ---
>  fs/xfs/xfs_iops.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
> index b229d25c1c3d6..a4c8db588690e 100644
> --- a/fs/xfs/xfs_iops.c
> +++ b/fs/xfs/xfs_iops.c
> @@ -1294,7 +1294,12 @@ xfs_setup_inode(
>  	gfp_mask = mapping_gfp_mask(inode->i_mapping);
>  	mapping_set_gfp_mask(inode->i_mapping, (gfp_mask & ~(__GFP_FS)));
>  
> -	mapping_set_large_folios(inode->i_mapping);
> +	/*
> +	 * As fs-verity doesn't support folios so far, we won't enable them on
> +	 * sealed inodes
> +	 */
> +	if (!IS_VERITY(inode))
> +		mapping_set_large_folios(inode->i_mapping);
>  
>  	/*
>  	 * If there is no attribute fork no ACL can exist on this inode,

Looks reasonable to me.

Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>

-- 
Dave Chinner
david@xxxxxxxxxxxxx



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