Re: [PATCH 09/18] xfs: stop using q_core warning counters in the quota code

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On Tuesday 30 June 2020 9:12:48 PM IST Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> 
> Add warning counter fields to the incore dquot, and use that instead of
> the ones in qcore.  This eliminates a bunch of endian conversions and
> will eventually allow us to remove qcore entirely.
>

The changes are logically correct.

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

> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
>  fs/xfs/xfs_dquot.c       |   14 +++++++++++---
>  fs/xfs/xfs_dquot.h       |    8 ++++++++
>  fs/xfs/xfs_qm.c          |   12 ++++++------
>  fs/xfs/xfs_qm_syscalls.c |   12 ++++++------
>  fs/xfs/xfs_trans_dquot.c |    6 +++---
>  5 files changed, 34 insertions(+), 18 deletions(-)
> 
> 
> diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
> index 02eae8c2ba1b..a1edb49ceda5 100644
> --- a/fs/xfs/xfs_dquot.c
> +++ b/fs/xfs/xfs_dquot.c
> @@ -139,7 +139,7 @@ xfs_qm_adjust_dqtimers(
>  			d->d_btimer = cpu_to_be32(ktime_get_real_seconds() +
>  					defq->btimelimit);
>  		} else {
> -			d->d_bwarns = 0;
> +			dq->q_blk.warnings = 0;
>  		}
>  	} else {
>  		if ((!dq->q_blk.softlimit ||
> @@ -158,7 +158,7 @@ xfs_qm_adjust_dqtimers(
>  			d->d_itimer = cpu_to_be32(ktime_get_real_seconds() +
>  					defq->itimelimit);
>  		} else {
> -			d->d_iwarns = 0;
> +			dq->q_ino.warnings = 0;
>  		}
>  	} else {
>  		if ((!dq->q_ino.softlimit ||
> @@ -177,7 +177,7 @@ xfs_qm_adjust_dqtimers(
>  			d->d_rtbtimer = cpu_to_be32(ktime_get_real_seconds() +
>  					defq->rtbtimelimit);
>  		} else {
> -			d->d_rtbwarns = 0;
> +			dq->q_rtb.warnings = 0;
>  		}
>  	} else {
>  		if ((!dq->q_rtb.softlimit ||
> @@ -542,6 +542,10 @@ xfs_dquot_from_disk(
>  	dqp->q_ino.count = be64_to_cpu(ddqp->d_icount);
>  	dqp->q_rtb.count = be64_to_cpu(ddqp->d_rtbcount);
>  
> +	dqp->q_blk.warnings = be16_to_cpu(ddqp->d_bwarns);
> +	dqp->q_ino.warnings = be16_to_cpu(ddqp->d_iwarns);
> +	dqp->q_rtb.warnings = be16_to_cpu(ddqp->d_rtbwarns);
> +
>  	/*
>  	 * Reservation counters are defined as reservation plus current usage
>  	 * to avoid having to add every time.
> @@ -573,6 +577,10 @@ xfs_dquot_to_disk(
>  	ddqp->d_bcount = cpu_to_be64(dqp->q_blk.count);
>  	ddqp->d_icount = cpu_to_be64(dqp->q_ino.count);
>  	ddqp->d_rtbcount = cpu_to_be64(dqp->q_rtb.count);
> +
> +	ddqp->d_bwarns = cpu_to_be16(dqp->q_blk.warnings);
> +	ddqp->d_iwarns = cpu_to_be16(dqp->q_ino.warnings);
> +	ddqp->d_rtbwarns = cpu_to_be16(dqp->q_rtb.warnings);
>  }
>  
>  /* Allocate and initialize the dquot buffer for this in-core dquot. */
> diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h
> index 23e05b0d7567..5840bc54b772 100644
> --- a/fs/xfs/xfs_dquot.h
> +++ b/fs/xfs/xfs_dquot.h
> @@ -37,6 +37,14 @@ struct xfs_dquot_res {
>  	/* Absolute and preferred limits. */
>  	xfs_qcnt_t		hardlimit;
>  	xfs_qcnt_t		softlimit;
> +
> +	/*
> +	 * For root dquots, this is the maximum number of warnings that will
> +	 * be issued for this quota type.  Otherwise, this is the number of
> +	 * warnings issued against this quota.  Note that none of this is
> +	 * implemented.
> +	 */
> +	xfs_qwarncnt_t		warnings;
>  };
>  
>  /*
> diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
> index b47bba204240..4e233cfef46d 100644
> --- a/fs/xfs/xfs_qm.c
> +++ b/fs/xfs/xfs_qm.c
> @@ -616,12 +616,12 @@ xfs_qm_init_timelimits(
>  		defq->itimelimit = be32_to_cpu(ddqp->d_itimer);
>  	if (ddqp->d_rtbtimer)
>  		defq->rtbtimelimit = be32_to_cpu(ddqp->d_rtbtimer);
> -	if (ddqp->d_bwarns)
> -		defq->bwarnlimit = be16_to_cpu(ddqp->d_bwarns);
> -	if (ddqp->d_iwarns)
> -		defq->iwarnlimit = be16_to_cpu(ddqp->d_iwarns);
> -	if (ddqp->d_rtbwarns)
> -		defq->rtbwarnlimit = be16_to_cpu(ddqp->d_rtbwarns);
> +	if (dqp->q_blk.warnings)
> +		defq->bwarnlimit = dqp->q_blk.warnings;
> +	if (dqp->q_ino.warnings)
> +		defq->iwarnlimit = dqp->q_ino.warnings;
> +	if (dqp->q_rtb.warnings)
> +		defq->rtbwarnlimit = dqp->q_rtb.warnings;
>  
>  	xfs_qm_dqdestroy(dqp);
>  }
> diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
> index ab596d389e3e..5d3bccdbd3bf 100644
> --- a/fs/xfs/xfs_qm_syscalls.c
> +++ b/fs/xfs/xfs_qm_syscalls.c
> @@ -548,11 +548,11 @@ xfs_qm_scall_setqlim(
>  	 * Update warnings counter(s) if requested
>  	 */
>  	if (newlim->d_fieldmask & QC_SPC_WARNS)
> -		ddq->d_bwarns = cpu_to_be16(newlim->d_spc_warns);
> +		dqp->q_blk.warnings = newlim->d_spc_warns;
>  	if (newlim->d_fieldmask & QC_INO_WARNS)
> -		ddq->d_iwarns = cpu_to_be16(newlim->d_ino_warns);
> +		dqp->q_ino.warnings = newlim->d_ino_warns;
>  	if (newlim->d_fieldmask & QC_RT_SPC_WARNS)
> -		ddq->d_rtbwarns = cpu_to_be16(newlim->d_rt_spc_warns);
> +		dqp->q_rtb.warnings = newlim->d_rt_spc_warns;
>  
>  	if (id == 0) {
>  		if (newlim->d_fieldmask & QC_SPC_WARNS)
> @@ -627,13 +627,13 @@ xfs_qm_scall_getquota_fill_qc(
>  	dst->d_ino_count = dqp->q_ino.reserved;
>  	dst->d_spc_timer = be32_to_cpu(dqp->q_core.d_btimer);
>  	dst->d_ino_timer = be32_to_cpu(dqp->q_core.d_itimer);
> -	dst->d_ino_warns = be16_to_cpu(dqp->q_core.d_iwarns);
> -	dst->d_spc_warns = be16_to_cpu(dqp->q_core.d_bwarns);
> +	dst->d_ino_warns = dqp->q_ino.warnings;
> +	dst->d_spc_warns = dqp->q_blk.warnings;
>  	dst->d_rt_spc_hardlimit = XFS_FSB_TO_B(mp, dqp->q_rtb.hardlimit);
>  	dst->d_rt_spc_softlimit = XFS_FSB_TO_B(mp, dqp->q_rtb.softlimit);
>  	dst->d_rt_space = XFS_FSB_TO_B(mp, dqp->q_rtb.reserved);
>  	dst->d_rt_spc_timer = be32_to_cpu(dqp->q_core.d_rtbtimer);
> -	dst->d_rt_spc_warns = be16_to_cpu(dqp->q_core.d_rtbwarns);
> +	dst->d_rt_spc_warns = dqp->q_rtb.warnings;
>  
>  	/*
>  	 * Internally, we don't reset all the timers when quota enforcement
> diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
> index b36d747989a7..21ed8eda3c80 100644
> --- a/fs/xfs/xfs_trans_dquot.c
> +++ b/fs/xfs/xfs_trans_dquot.c
> @@ -592,7 +592,7 @@ xfs_trans_dqresv(
>  		if (!softlimit)
>  			softlimit = defq->bsoftlimit;
>  		timer = be32_to_cpu(dqp->q_core.d_btimer);
> -		warns = be16_to_cpu(dqp->q_core.d_bwarns);
> +		warns = dqp->q_blk.warnings;
>  		warnlimit = defq->bwarnlimit;
>  		resbcountp = &dqp->q_blk.reserved;
>  	} else {
> @@ -604,7 +604,7 @@ xfs_trans_dqresv(
>  		if (!softlimit)
>  			softlimit = defq->rtbsoftlimit;
>  		timer = be32_to_cpu(dqp->q_core.d_rtbtimer);
> -		warns = be16_to_cpu(dqp->q_core.d_rtbwarns);
> +		warns = dqp->q_rtb.warnings;
>  		warnlimit = defq->rtbwarnlimit;
>  		resbcountp = &dqp->q_rtb.reserved;
>  	}
> @@ -639,7 +639,7 @@ xfs_trans_dqresv(
>  		if (ninos > 0) {
>  			total_count = dqp->q_ino.reserved + ninos;
>  			timer = be32_to_cpu(dqp->q_core.d_itimer);
> -			warns = be16_to_cpu(dqp->q_core.d_iwarns);
> +			warns = dqp->q_ino.warnings;
>  			warnlimit = defq->iwarnlimit;
>  			hardlimit = dqp->q_ino.hardlimit;
>  			if (!hardlimit)
> 
> 


-- 
chandan






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