Re: [PATCH 04/13] xfs: clean up icreate quota reservation calls

[Brian Foster <bfoster@redhat.com>]

On Wed, Jan 27, 2021 at 10:01:27PM -0800, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@kernel.org>
> 
> Create a proper helper so that inode creation calls can reserve quota
> with a dedicated function.
> 
> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> ---

Reviewed-by: Brian Foster <bfoster@redhat.com>

>  fs/xfs/xfs_inode.c       |    6 ++----
>  fs/xfs/xfs_quota.h       |   14 ++++++++++----
>  fs/xfs/xfs_symlink.c     |    3 +--
>  fs/xfs/xfs_trans_dquot.c |   18 ++++++++++++++++++
>  4 files changed, 31 insertions(+), 10 deletions(-)
> 
> 
> diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
> index e2a1db4cee43..4bbd2fb628f7 100644
> --- a/fs/xfs/xfs_inode.c
> +++ b/fs/xfs/xfs_inode.c
> @@ -1037,8 +1037,7 @@ xfs_create(
>  	/*
>  	 * Reserve disk quota and the inode.
>  	 */
> -	error = xfs_trans_reserve_quota(tp, mp, udqp, gdqp,
> -						pdqp, resblks, 1, 0);
> +	error = xfs_trans_reserve_quota_icreate(tp, udqp, gdqp, pdqp, resblks);
>  	if (error)
>  		goto out_trans_cancel;
>  
> @@ -1169,8 +1168,7 @@ xfs_create_tmpfile(
>  	if (error)
>  		goto out_release_inode;
>  
> -	error = xfs_trans_reserve_quota(tp, mp, udqp, gdqp,
> -						pdqp, resblks, 1, 0);
> +	error = xfs_trans_reserve_quota_icreate(tp, udqp, gdqp, pdqp, resblks);
>  	if (error)
>  		goto out_trans_cancel;
>  
> diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h
> index a395dabee033..d1e3f94140b4 100644
> --- a/fs/xfs/xfs_quota.h
> +++ b/fs/xfs/xfs_quota.h
> @@ -86,6 +86,9 @@ extern int xfs_trans_reserve_quota_nblks(struct xfs_trans *,
>  extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
>  		struct xfs_mount *, struct xfs_dquot *,
>  		struct xfs_dquot *, struct xfs_dquot *, int64_t, long, uint);
> +int xfs_trans_reserve_quota_icreate(struct xfs_trans *tp,
> +		struct xfs_dquot *udqp, struct xfs_dquot *gdqp,
> +		struct xfs_dquot *pdqp, int64_t dblocks);
>  
>  extern int xfs_qm_vop_dqalloc(struct xfs_inode *, kuid_t, kgid_t,
>  		prid_t, uint, struct xfs_dquot **, struct xfs_dquot **,
> @@ -149,6 +152,13 @@ xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t dblocks)
>  	return 0;
>  }
>  
> +static inline int
> +xfs_trans_reserve_quota_icreate(struct xfs_trans *tp, struct xfs_dquot *udqp,
> +		struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, int64_t dblocks)
> +{
> +	return 0;
> +}
> +
>  #define xfs_qm_vop_create_dqattach(tp, ip, u, g, p)
>  #define xfs_qm_vop_rename_dqattach(it)					(0)
>  #define xfs_qm_vop_chown(tp, ip, old, new)				(NULL)
> @@ -164,10 +174,6 @@ xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t dblocks)
>  #define xfs_qm_unmount_quotas(mp)
>  #endif /* CONFIG_XFS_QUOTA */
>  
> -#define xfs_trans_reserve_quota(tp, mp, ud, gd, pd, nb, ni, f) \
> -	xfs_trans_reserve_quota_bydquots(tp, mp, ud, gd, pd, nb, ni, \
> -				f | XFS_QMOPT_RES_REGBLKS)
> -
>  static inline int
>  xfs_quota_unreserve_blkres(struct xfs_inode *ip, int64_t dblocks)
>  {
> diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
> index 7f96649e918a..d5dee8f409b2 100644
> --- a/fs/xfs/xfs_symlink.c
> +++ b/fs/xfs/xfs_symlink.c
> @@ -215,8 +215,7 @@ xfs_symlink(
>  	/*
>  	 * Reserve disk quota : blocks and inode.
>  	 */
> -	error = xfs_trans_reserve_quota(tp, mp, udqp, gdqp,
> -						pdqp, resblks, 1, 0);
> +	error = xfs_trans_reserve_quota_icreate(tp, udqp, gdqp, pdqp, resblks);
>  	if (error)
>  		goto out_trans_cancel;
>  
> diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
> index 28b8ac701919..22aa875b84f7 100644
> --- a/fs/xfs/xfs_trans_dquot.c
> +++ b/fs/xfs/xfs_trans_dquot.c
> @@ -804,6 +804,24 @@ xfs_trans_reserve_quota_nblks(
>  						nblks, ninos, flags);
>  }
>  
> +/* Change the quota reservations for an inode creation activity. */
> +int
> +xfs_trans_reserve_quota_icreate(
> +	struct xfs_trans	*tp,
> +	struct xfs_dquot	*udqp,
> +	struct xfs_dquot	*gdqp,
> +	struct xfs_dquot	*pdqp,
> +	int64_t			dblocks)
> +{
> +	struct xfs_mount	*mp = tp->t_mountp;
> +
> +	if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
> +		return 0;
> +
> +	return xfs_trans_reserve_quota_bydquots(tp, mp, udqp, gdqp, pdqp,
> +			dblocks, 1, XFS_QMOPT_RES_REGBLKS);
> +}
> +
>  /*
>   * This routine is called to allocate a quotaoff log item.
>   */
>