On Thu, Jan 02, 2020 at 09:40:46PM +0100, Arnd Bergmann wrote:
> As a preparation for removing the 32-bit time_t type and
> all associated interfaces, change xfs to use time64_t and
> ktime_get_real_seconds() for the quota housekeeping.
>
> This avoids one difference between 32-bit and 64-bit kernels,
> raising the theoretical limit for the quota grace period
> to year 2106 on 32-bit instead of year 2038.
>
> Note that common user space tools using the XFS quotactl
> interface instead of the generic one still use the y2038
> dates.
>
> To fix quotas properly, both the on-disk format and user
> space still need to be changed.
>
> Signed-off-by: Arnd Bergmann <a...@arndb.de>
> ---
> This has a small conflict against the series at
> https://www.spinics.net/lists/linux-xfs/msg35409.html
> ("xfs: widen timestamps to deal with y2038") which needs
> to be rebased on top of this.
>
> All other changes to remove time_t and get_seconds()
> are now in linux-next, this is one of the last patches
> needed to remove their definitions for v5.6.
>
> If the widened timestamps make it into v5.6, this patch
> can be dropped.
Not likely. :)
I'll give this series a spin,
Reviewed-by: Darrick J. Wong <darrick.w...@oracle.com>
--D
> ---
> fs/xfs/xfs_dquot.c | 6 +++---
> fs/xfs/xfs_qm.h | 6 +++---
> fs/xfs/xfs_quotaops.c | 6 +++---
> fs/xfs/xfs_trans_dquot.c | 8 +++++---
> 4 files changed, 14 insertions(+), 12 deletions(-)
>
> diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
> index 2bff21ca9d78..9cfd3209f52b 100644
> --- a/fs/xfs/xfs_dquot.c
> +++ b/fs/xfs/xfs_dquot.c
> @@ -137,7 +137,7 @@ xfs_qm_adjust_dqtimers(
> (d->d_blk_hardlimit &&
> (be64_to_cpu(d->d_bcount) >
> be64_to_cpu(d->d_blk_hardlimit)))) {
> - d->d_btimer = cpu_to_be32(get_seconds() +
> + d->d_btimer = cpu_to_be32(ktime_get_real_seconds() +
> mp->m_quotainfo->qi_btimelimit);
> } else {
> d->d_bwarns = 0;
> @@ -160,7 +160,7 @@ xfs_qm_adjust_dqtimers(
> (d->d_ino_hardlimit &&
> (be64_to_cpu(d->d_icount) >
> be64_to_cpu(d->d_ino_hardlimit)))) {
> - d->d_itimer = cpu_to_be32(get_seconds() +
> + d->d_itimer = cpu_to_be32(ktime_get_real_seconds() +
> mp->m_quotainfo->qi_itimelimit);
> } else {
> d->d_iwarns = 0;
> @@ -183,7 +183,7 @@ xfs_qm_adjust_dqtimers(
> (d->d_rtb_hardlimit &&
> (be64_to_cpu(d->d_rtbcount) >
> be64_to_cpu(d->d_rtb_hardlimit)))) {
> - d->d_rtbtimer = cpu_to_be32(get_seconds() +
> + d->d_rtbtimer = cpu_to_be32(ktime_get_real_seconds() +
> mp->m_quotainfo->qi_rtbtimelimit);
> } else {
> d->d_rtbwarns = 0;
> diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h
> index 7823af39008b..4e57edca8bce 100644
> --- a/fs/xfs/xfs_qm.h
> +++ b/fs/xfs/xfs_qm.h
> @@ -64,9 +64,9 @@ struct xfs_quotainfo {
> struct xfs_inode *qi_pquotaip; /* project quota inode */
> struct list_lru qi_lru;
> int qi_dquots;
> - time_t qi_btimelimit; /* limit for blks timer */
> - time_t qi_itimelimit; /* limit for inodes timer */
> - time_t qi_rtbtimelimit;/* limit for rt blks timer */
> + time64_t qi_btimelimit; /* limit for blks timer */
> + time64_t qi_itimelimit; /* limit for inodes timer */
> + time64_t qi_rtbtimelimit;/* limit for rt blks timer */
> xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */
> xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */
> xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */
> diff --git a/fs/xfs/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c
> index c7de17deeae6..38669e827206 100644
> --- a/fs/xfs/xfs_quotaops.c
> +++ b/fs/xfs/xfs_quotaops.c
> @@ -37,9 +37,9 @@ xfs_qm_fill_state(
> tstate->flags |= QCI_SYSFILE;
> tstate->blocks = ip->i_d.di_nblocks;
> tstate->nextents = ip->i_d.di_nextents;
> - tstate->spc_timelimit = q->qi_btimelimit;
> - tstate->ino_timelimit = q->qi_itimelimit;
> - tstate->rt_spc_timelimit = q->qi_rtbtimelimit;
> + tstate->spc_timelimit = (u32)q->qi_btimelimit;
> + tstate->ino_timelimit = (u32)q->qi_itimelimit;
> + tstate->rt_spc_timelimit = (u32)q->qi_rtbtimelimit;
> tstate->spc_warnlimit = q->qi_bwarnlimit;
> tstate->ino_warnlimit = q->qi_iwarnlimit;
> tstate->rt_spc_warnlimit = q->qi_rtbwarnlimit;
> diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
> index a6fe2d8dc40f..d1b9869bc5fa 100644
> --- a/fs/xfs/xfs_trans_dquot.c
> +++ b/fs/xfs/xfs_trans_dquot.c
> @@ -580,7 +580,7 @@ xfs_trans_dqresv(
> {
> xfs_qcnt_t hardlimit;
> xfs_qcnt_t softlimit;
> - time_t timer;
> + time64_t timer;
> xfs_qwarncnt_t warns;
> xfs_qwarncnt_t warnlimit;
> xfs_qcnt_t total_count;
> @@ -635,7 +635,8 @@ xfs_trans_dqresv(
> goto error_return;
> }
> if (softlimit && total_count > softlimit) {
> - if ((timer != 0 && get_seconds() > timer) ||
> + if ((timer != 0 &&
> + ktime_get_real_seconds() > timer) ||
> (warns != 0 && warns >= warnlimit)) {
> xfs_quota_warn(mp, dqp,
> QUOTA_NL_BSOFTLONGWARN);
> @@ -662,7 +663,8 @@ xfs_trans_dqresv(
> goto error_return;
> }
> if (softlimit && total_count > softlimit) {
> - if ((timer != 0 && get_seconds() > timer) ||
> + if ((timer != 0 &&
> + ktime_get_real_seconds() > timer) ||
> (warns != 0 && warns >= warnlimit)) {
> xfs_quota_warn(mp, dqp,
> QUOTA_NL_ISOFTLONGWARN);
> --
> 2.20.0
>
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