linux-kernel - Re: [PATCH v2 8/8] xfs: remove restrictions for fsdax and reflink

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Date:   Thu, 1 Dec 2022 16:06:11 -0800
From:   "Darrick J. Wong" <djwong@...nel.org>
To:     Shiyang Ruan <ruansy.fnst@...itsu.com>
Cc:     linux-kernel@...r.kernel.org, linux-xfs@...r.kernel.org,
        nvdimm@...ts.linux.dev, linux-fsdevel@...r.kernel.org,
        david@...morbit.com, dan.j.williams@...el.com,
        akpm@...ux-foundation.org
Subject: Re: [PATCH v2 8/8] xfs: remove restrictions for fsdax and reflink

On Thu, Dec 01, 2022 at 03:32:53PM +0000, Shiyang Ruan wrote:
> Since the basic function for fsdax and reflink has been implemented,
> remove the restrictions of them for widly test.
> 
> Signed-off-by: Shiyang Ruan <ruansy.fnst@...itsu.com>

Looks ok,
Reviewed-by: Darrick J. Wong <djwong@...nel.org>

--D

> ---
>  fs/xfs/xfs_ioctl.c | 4 ----
>  fs/xfs/xfs_iops.c  | 4 ----
>  2 files changed, 8 deletions(-)
> 
> diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
> index 1f783e979629..13f1b2add390 100644
> --- a/fs/xfs/xfs_ioctl.c
> +++ b/fs/xfs/xfs_ioctl.c
> @@ -1138,10 +1138,6 @@ xfs_ioctl_setattr_xflags(
>  	if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip))
>  		ip->i_diflags2 &= ~XFS_DIFLAG2_REFLINK;
>  
> -	/* Don't allow us to set DAX mode for a reflinked file for now. */
> -	if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip))
> -		return -EINVAL;
> -
>  	/* diflags2 only valid for v3 inodes. */
>  	i_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags);
>  	if (i_flags2 && !xfs_has_v3inodes(mp))
> diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
> index 2e10e1c66ad6..bf0495f7a5e1 100644
> --- a/fs/xfs/xfs_iops.c
> +++ b/fs/xfs/xfs_iops.c
> @@ -1185,10 +1185,6 @@ xfs_inode_supports_dax(
>  	if (!S_ISREG(VFS_I(ip)->i_mode))
>  		return false;
>  
> -	/* Only supported on non-reflinked files. */
> -	if (xfs_is_reflink_inode(ip))
> -		return false;
> -
>  	/* Block size must match page size */
>  	if (mp->m_sb.sb_blocksize != PAGE_SIZE)
>  		return false;
> -- 
> 2.38.1
>