Re: [PATCH 3/3] xfs: preserve DIFLAG2_NREXT64 when setting other inode attributes

[Alli <allison.henderson@oracle.com>]

On Tue, 2022-06-07 at 14:03 -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@kernel.org>
> 
> It is vitally important that we preserve the state of the NREXT64
> inode
> flag when we're changing the other flags2 fields.
> 
> Fixes: 9b7d16e34bbe ("xfs: Introduce XFS_DIFLAG2_NREXT64 and
> associated helpers")
> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
> Reviewed-by: Dave Chinner <dchinner@redhat.com>
> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
> ---
>  fs/xfs/xfs_ioctl.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> 
> diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
> index 5a364a7d58fd..0d67ff8a8961 100644
> --- a/fs/xfs/xfs_ioctl.c
> +++ b/fs/xfs/xfs_ioctl.c
> @@ -1096,7 +1096,8 @@ xfs_flags2diflags2(
>  {
>  	uint64_t		di_flags2 =
>  		(ip->i_diflags2 & (XFS_DIFLAG2_REFLINK |
> -				   XFS_DIFLAG2_BIGTIME));
> +				   XFS_DIFLAG2_BIGTIME |
> +				   XFS_DIFLAG2_NREXT64));
>  
>  	if (xflags & FS_XFLAG_DAX)
>  		di_flags2 |= XFS_DIFLAG2_DAX;
>