Re: [PATCH 14/18] xfs: refactor quota exceeded test

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On Tuesday 30 June 2020 9:13:20 PM IST Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> 
> Refactor the open-coded test for whether or not we're over quota.
>

The changes look good to me.

Reviewed-by: Chandan Babu R <chandanrlinux@xxxxxxxxx>

> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
>  fs/xfs/xfs_dquot.c |   95 ++++++++++++++++------------------------------------
>  1 file changed, 30 insertions(+), 65 deletions(-)
> 
> 
> diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
> index 35a113d1b42b..ef34c82c28a0 100644
> --- a/fs/xfs/xfs_dquot.c
> +++ b/fs/xfs/xfs_dquot.c
> @@ -97,6 +97,33 @@ xfs_qm_adjust_dqlimits(
>  		xfs_dquot_set_prealloc_limits(dq);
>  }
>  
> +/*
> + * Determine if this quota counter is over either limit and set the quota
> + * timers as appropriate.
> + */
> +static inline void
> +xfs_qm_adjust_res_timer(
> +	struct xfs_dquot_res	*res,
> +	struct xfs_def_qres	*dres)
> +{
> +	bool			over;
> +
> +#ifdef DEBUG
> +	if (res->hardlimit)
> +		ASSERT(res->softlimit <= res->hardlimit);
> +#endif
> +
> +	over = (res->softlimit && res->count > res->softlimit) ||
> +	       (res->hardlimit && res->count > res->hardlimit);
> +
> +	if (over && res->timer == 0)
> +		res->timer = ktime_get_real_seconds() + dres->timelimit;
> +	else if (!over && res->timer != 0)
> +		res->timer = 0;
> +	else if (!over && res->timer == 0)
> +		res->warnings = 0;
> +}
> +
>  /*
>   * Check the limits and timers of a dquot and start or reset timers
>   * if necessary.
> @@ -121,71 +148,9 @@ xfs_qm_adjust_dqtimers(
>  	ASSERT(dq->q_id);
>  	defq = xfs_get_defquota(qi, xfs_dquot_type(dq));
>  
> -#ifdef DEBUG
> -	if (dq->q_blk.hardlimit)
> -		ASSERT(dq->q_blk.softlimit <= dq->q_blk.hardlimit);
> -	if (dq->q_ino.hardlimit)
> -		ASSERT(dq->q_ino.softlimit <= dq->q_ino.hardlimit);
> -	if (dq->q_rtb.hardlimit)
> -		ASSERT(dq->q_rtb.softlimit <= dq->q_rtb.hardlimit);
> -#endif
> -
> -	if (!dq->q_blk.timer) {
> -		if ((dq->q_blk.softlimit &&
> -		     (dq->q_blk.count > dq->q_blk.softlimit)) ||
> -		    (dq->q_blk.hardlimit &&
> -		     (dq->q_blk.count > dq->q_blk.hardlimit))) {
> -			dq->q_blk.timer = ktime_get_real_seconds() +
> -					defq->dfq_blk.timelimit;
> -		} else {
> -			dq->q_blk.warnings = 0;
> -		}
> -	} else {
> -		if ((!dq->q_blk.softlimit ||
> -		     (dq->q_blk.count <= dq->q_blk.softlimit)) &&
> -		    (!dq->q_blk.hardlimit ||
> -		    (dq->q_blk.count <= dq->q_blk.hardlimit))) {
> -			dq->q_blk.timer = 0;
> -		}
> -	}
> -
> -	if (!dq->q_ino.timer) {
> -		if ((dq->q_ino.softlimit &&
> -		     (dq->q_ino.count > dq->q_ino.softlimit)) ||
> -		    (dq->q_ino.hardlimit &&
> -		     (dq->q_ino.count > dq->q_ino.hardlimit))) {
> -			dq->q_ino.timer = ktime_get_real_seconds() +
> -					defq->dfq_ino.timelimit;
> -		} else {
> -			dq->q_ino.warnings = 0;
> -		}
> -	} else {
> -		if ((!dq->q_ino.softlimit ||
> -		     (dq->q_ino.count <= dq->q_ino.softlimit))  &&
> -		    (!dq->q_ino.hardlimit ||
> -		     (dq->q_ino.count <= dq->q_ino.hardlimit))) {
> -			dq->q_ino.timer = 0;
> -		}
> -	}
> -
> -	if (!dq->q_rtb.timer) {
> -		if ((dq->q_rtb.softlimit &&
> -		     (dq->q_rtb.count > dq->q_rtb.softlimit)) ||
> -		    (dq->q_rtb.hardlimit &&
> -		     (dq->q_rtb.count > dq->q_rtb.hardlimit))) {
> -			dq->q_rtb.timer = ktime_get_real_seconds() +
> -					defq->dfq_rtb.timelimit;
> -		} else {
> -			dq->q_rtb.warnings = 0;
> -		}
> -	} else {
> -		if ((!dq->q_rtb.softlimit ||
> -		     (dq->q_rtb.count <= dq->q_rtb.softlimit)) &&
> -		    (!dq->q_rtb.hardlimit ||
> -		     (dq->q_rtb.count <= dq->q_rtb.hardlimit))) {
> -			dq->q_rtb.timer = 0;
> -		}
> -	}
> +	xfs_qm_adjust_res_timer(&dq->q_blk, &defq->dfq_blk);
> +	xfs_qm_adjust_res_timer(&dq->q_ino, &defq->dfq_ino);
> +	xfs_qm_adjust_res_timer(&dq->q_rtb, &defq->dfq_rtb);
>  }
>  
>  /*
> 
> 


-- 
chandan






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