[Cluster-devel] [PATCH 0/8 v5] quota: Unify VFS and XFS quota interfaces

[Cluster-devel] [PATCH 0/8 v5] quota: Unify VFS and XFS quota interfaces

[Jan Kara]

  Hello,

  these are outstanding patches in my series unifying VFS and XFS quota
interfaces so that XFS quotactls work for filesystems with VFS quotas and vice
versa.  This is useful so that userspace doesn't have to care that much about
which filesystem it is using at least when using basic quota functionality. In
particular we should be able to reuse project quota tests in xfstests for ext4.

The patches are based on top of Linus' tree from few days ago which already
contains initial part of the original series.  The patch series can also be
pulled from 'quota_interface' branch of my tree [1].

I'm sending the series as there are two XFS and one GFS2 patches which still
need review before I can add them to my tree for the next merge window.

								Honza

[1] git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git

[Cluster-devel] [PATCH 1/8] quota: Make VFS quotas use new interface for getting quota info

[Jan Kara]

Create new internal interface for getting information about quota which
contains everything needed for both VFS quotas and XFS quotas. Make VFS
use this and hook it up to Q_GETINFO.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/ext3/super.c          |  2 +-
 fs/ext4/super.c          |  2 +-
 fs/quota/dquot.c         | 41 +++++++++++++++++++++++++++--------------
 fs/quota/quota.c         | 25 +++++++++++++++++++++----
 fs/reiserfs/super.c      |  2 +-
 include/linux/quota.h    | 33 ++++++++++++++++++++++++++++++++-
 include/linux/quotaops.h |  2 +-
 7 files changed, 84 insertions(+), 23 deletions(-)

diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index d4dbf3c259b3..f037b4b27300 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -789,7 +789,7 @@ static const struct quotactl_ops ext3_qctl_operations = {
 	.quota_on	= ext3_quota_on,
 	.quota_off	= dquot_quota_off,
 	.quota_sync	= dquot_quota_sync,
-	.get_info	= dquot_get_dqinfo,
+	.get_state	= dquot_get_state,
 	.set_info	= dquot_set_dqinfo,
 	.get_dqblk	= dquot_get_dqblk,
 	.set_dqblk	= dquot_set_dqblk
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index ac64edbe501d..c6e70831e135 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1076,7 +1076,7 @@ static const struct quotactl_ops ext4_qctl_operations = {
 	.quota_on	= ext4_quota_on,
 	.quota_off	= ext4_quota_off,
 	.quota_sync	= dquot_quota_sync,
-	.get_info	= dquot_get_dqinfo,
+	.get_state	= dquot_get_state,
 	.set_info	= dquot_set_dqinfo,
 	.get_dqblk	= dquot_get_dqblk,
 	.set_dqblk	= dquot_set_dqblk
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 0ccd4ba3a246..cf4edd87e854 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2614,26 +2614,39 @@ out:
 EXPORT_SYMBOL(dquot_set_dqblk);
 
 /* Generic routine for getting common part of quota file information */
-int dquot_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
+int dquot_get_state(struct super_block *sb, struct qc_state *state)
 {
 	struct mem_dqinfo *mi;
+	struct qc_type_state *tstate;
+	struct quota_info *dqopt = sb_dqopt(sb);
+	int type;
   
 	mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
-	if (!sb_has_quota_active(sb, type)) {
-		mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
-		return -ESRCH;
+	memset(state, 0, sizeof(*state));
+	for (type = 0; type < MAXQUOTAS; type++) {
+		if (!sb_has_quota_active(sb, type))
+			continue;
+		tstate = state->s_state + type;
+		mi = sb_dqopt(sb)->info + type;
+		tstate->flags = QCI_ACCT_ENABLED;
+		spin_lock(&dq_data_lock);
+		if (mi->dqi_flags & DQF_SYS_FILE)
+			tstate->flags |= QCI_SYSFILE;
+		if (mi->dqi_flags & DQF_ROOT_SQUASH)
+			tstate->flags |= QCI_ROOT_SQUASH;
+		if (sb_has_quota_limits_enabled(sb, type))
+			tstate->flags |= QCI_LIMITS_ENFORCED;
+		tstate->spc_timelimit = mi->dqi_bgrace;
+		tstate->ino_timelimit = mi->dqi_igrace;
+		tstate->ino = dqopt->files[type]->i_ino;
+		tstate->blocks = dqopt->files[type]->i_blocks;
+		tstate->nextents = 1;	/* We don't know... */
+		spin_unlock(&dq_data_lock);
 	}
-	mi = sb_dqopt(sb)->info + type;
-	spin_lock(&dq_data_lock);
-	ii->dqi_bgrace = mi->dqi_bgrace;
-	ii->dqi_igrace = mi->dqi_igrace;
-	ii->dqi_flags = mi->dqi_flags & DQF_GETINFO_MASK;
-	ii->dqi_valid = IIF_ALL;
-	spin_unlock(&dq_data_lock);
 	mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
 	return 0;
 }
-EXPORT_SYMBOL(dquot_get_dqinfo);
+EXPORT_SYMBOL(dquot_get_state);
 
 /* Generic routine for setting common part of quota file information */
 int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
@@ -2677,7 +2690,7 @@ const struct quotactl_ops dquot_quotactl_ops = {
 	.quota_on	= dquot_quota_on,
 	.quota_off	= dquot_quota_off,
 	.quota_sync	= dquot_quota_sync,
-	.get_info	= dquot_get_dqinfo,
+	.get_state	= dquot_get_state,
 	.set_info	= dquot_set_dqinfo,
 	.get_dqblk	= dquot_get_dqblk,
 	.set_dqblk	= dquot_set_dqblk
@@ -2688,7 +2701,7 @@ const struct quotactl_ops dquot_quotactl_sysfile_ops = {
 	.quota_enable	= dquot_quota_enable,
 	.quota_disable	= dquot_quota_disable,
 	.quota_sync	= dquot_quota_sync,
-	.get_info	= dquot_get_dqinfo,
+	.get_state	= dquot_get_state,
 	.set_info	= dquot_set_dqinfo,
 	.get_dqblk	= dquot_get_dqblk,
 	.set_dqblk	= dquot_set_dqblk
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index d14a799c7785..00d50fca1005 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -118,13 +118,30 @@ static int quota_getfmt(struct super_block *sb, int type, void __user *addr)
 
 static int quota_getinfo(struct super_block *sb, int type, void __user *addr)
 {
-	struct if_dqinfo info;
+	struct qc_state state;
+	struct qc_type_state *tstate;
+	struct if_dqinfo uinfo;
 	int ret;
 
-	if (!sb->s_qcop->get_info)
+	/* This checks whether qc_state has enough entries... */
+	BUILD_BUG_ON(MAXQUOTAS > XQM_MAXQUOTAS);
+	if (!sb->s_qcop->get_state)
 		return -ENOSYS;
-	ret = sb->s_qcop->get_info(sb, type, &info);
-	if (!ret && copy_to_user(addr, &info, sizeof(info)))
+	ret = sb->s_qcop->get_state(sb, &state);
+	if (ret)
+		return ret;
+	tstate = state.s_state + type;
+	if (!(tstate->flags & QCI_ACCT_ENABLED))
+		return -ESRCH;
+	memset(&uinfo, 0, sizeof(uinfo));
+	uinfo.dqi_bgrace = tstate->spc_timelimit;
+	uinfo.dqi_igrace = tstate->ino_timelimit;
+	if (tstate->flags & QCI_SYSFILE)
+		uinfo.dqi_flags |= DQF_SYS_FILE;
+	if (tstate->flags & QCI_ROOT_SQUASH)
+		uinfo.dqi_flags |= DQF_ROOT_SQUASH;
+	uinfo.dqi_valid = IIF_ALL;
+	if (!ret && copy_to_user(addr, &uinfo, sizeof(uinfo)))
 		return -EFAULT;
 	return ret;
 }
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 71fbbe3e2dab..68b5f182984e 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -805,7 +805,7 @@ static const struct quotactl_ops reiserfs_qctl_operations = {
 	.quota_on = reiserfs_quota_on,
 	.quota_off = dquot_quota_off,
 	.quota_sync = dquot_quota_sync,
-	.get_info = dquot_get_dqinfo,
+	.get_state = dquot_get_state,
 	.set_info = dquot_set_dqinfo,
 	.get_dqblk = dquot_get_dqblk,
 	.set_dqblk = dquot_set_dqblk,
diff --git a/include/linux/quota.h b/include/linux/quota.h
index d534e8ed308a..6ecac0f3b2ca 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -366,6 +366,37 @@ struct qc_dqblk {
 #define	QC_RT_SPACE	(1<<14)
 #define QC_ACCT_MASK (QC_SPACE | QC_INO_COUNT | QC_RT_SPACE)
 
+#define QCI_SYSFILE		(1 << 0)	/* Quota file is hidden from userspace */
+#define QCI_ROOT_SQUASH		(1 << 1)	/* Root squash turned on */
+#define QCI_ACCT_ENABLED	(1 << 2)	/* Quota accounting enabled */
+#define QCI_LIMITS_ENFORCED	(1 << 3)	/* Quota limits enforced */
+
+/* Structures for communicating via ->get_state */
+struct qc_type_state {
+	unsigned int flags;		/* Flags QCI_* */
+	unsigned int spc_timelimit;	/* Time after which space softlimit is
+					 * enforced */
+	unsigned int ino_timelimit;	/* Ditto for inode softlimit */
+	unsigned int rt_spc_timelimit;	/* Ditto for real-time space */
+	unsigned int spc_warnlimit;	/* Limit for number of space warnings */
+	unsigned int ino_warnlimit;	/* Ditto for inodes */
+	unsigned int rt_spc_warnlimit;	/* Ditto for real-time space */
+	unsigned long long ino;		/* Inode number of quota file */
+	blkcnt_t blocks;		/* Number of 512-byte blocks in the file */
+	blkcnt_t nextents;		/* Number of extents in the file */
+};
+
+struct qc_state {
+	unsigned int s_incoredqs;	/* Number of dquots in core */
+	/*
+	 * Per quota type information. The array should really have
+	 * max(MAXQUOTAS, XQM_MAXQUOTAS) entries. BUILD_BUG_ON in
+	 * quota_getinfo() makes sure XQM_MAXQUOTAS is large enough.  Once VFS
+	 * supports project quotas, this can be changed to MAXQUOTAS
+	 */
+	struct qc_type_state s_state[XQM_MAXQUOTAS];
+};
+
 /* Operations handling requests from userspace */
 struct quotactl_ops {
 	int (*quota_on)(struct super_block *, int, int, struct path *);
@@ -373,10 +404,10 @@ struct quotactl_ops {
 	int (*quota_enable)(struct super_block *, unsigned int);
 	int (*quota_disable)(struct super_block *, unsigned int);
 	int (*quota_sync)(struct super_block *, int);
-	int (*get_info)(struct super_block *, int, struct if_dqinfo *);
 	int (*set_info)(struct super_block *, int, struct if_dqinfo *);
 	int (*get_dqblk)(struct super_block *, struct kqid, struct qc_dqblk *);
 	int (*set_dqblk)(struct super_block *, struct kqid, struct qc_dqblk *);
+	int (*get_state)(struct super_block *, struct qc_state *);
 	int (*get_xstate)(struct super_block *, struct fs_quota_stat *);
 	int (*get_xstatev)(struct super_block *, struct fs_quota_statv *);
 	int (*rm_xquota)(struct super_block *, unsigned int);
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index df73258cca47..6509a29523e2 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -95,7 +95,7 @@ int dquot_quota_on_mount(struct super_block *sb, char *qf_name,
 int dquot_quota_off(struct super_block *sb, int type);
 int dquot_writeback_dquots(struct super_block *sb, int type);
 int dquot_quota_sync(struct super_block *sb, int type);
-int dquot_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
+int dquot_get_state(struct super_block *sb, struct qc_state *state);
 int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
 int dquot_get_dqblk(struct super_block *sb, struct kqid id,
 		struct qc_dqblk *di);
-- 
2.1.4

[Cluster-devel] [PATCH 2/8] quota: Wire up Q_GETXSTATE and Q_GETXSTATV calls to work with ->get_state

[Jan Kara]

Add appropriate conversion functions so that filesystems supporting
->get_state() method can be queried using Q_GETXSTATE and Q_GETXSTATV
calls.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/quota/quota.c | 138 +++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 134 insertions(+), 4 deletions(-)

diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 00d50fca1005..83939ff4c444 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -269,25 +269,152 @@ static int quota_disable(struct super_block *sb, void __user *addr)
 	return sb->s_qcop->quota_disable(sb, flags);
 }
 
+static int quota_state_to_flags(struct qc_state *state)
+{
+	int flags = 0;
+
+	if (state->s_state[USRQUOTA].flags & QCI_ACCT_ENABLED)
+		flags |= FS_QUOTA_UDQ_ACCT;
+	if (state->s_state[USRQUOTA].flags & QCI_LIMITS_ENFORCED)
+		flags |= FS_QUOTA_UDQ_ENFD;
+	if (state->s_state[GRPQUOTA].flags & QCI_ACCT_ENABLED)
+		flags |= FS_QUOTA_GDQ_ACCT;
+	if (state->s_state[GRPQUOTA].flags & QCI_LIMITS_ENFORCED)
+		flags |= FS_QUOTA_GDQ_ENFD;
+	if (state->s_state[PRJQUOTA].flags & QCI_ACCT_ENABLED)
+		flags |= FS_QUOTA_PDQ_ACCT;
+	if (state->s_state[PRJQUOTA].flags & QCI_LIMITS_ENFORCED)
+		flags |= FS_QUOTA_PDQ_ENFD;
+	return flags;
+}
+
+static int quota_getstate(struct super_block *sb, struct fs_quota_stat *fqs)
+{
+	int type;
+	struct qc_state state;
+	int ret;
+
+	ret = sb->s_qcop->get_state(sb, &state);
+	if (ret < 0)
+		return ret;
+
+	memset(fqs, 0, sizeof(*fqs));
+	fqs->qs_version = FS_QSTAT_VERSION;
+	fqs->qs_flags = quota_state_to_flags(&state);
+	/* No quota enabled? */
+	if (!fqs->qs_flags)
+		return -ENOSYS;
+	fqs->qs_incoredqs = state.s_incoredqs;
+	/*
+	 * GETXSTATE quotactl has space for just one set of time limits so
+	 * report them for the first enabled quota type
+	 */
+	for (type = 0; type < XQM_MAXQUOTAS; type++)
+		if (state.s_state[type].flags & QCI_ACCT_ENABLED)
+			break;
+	BUG_ON(type == XQM_MAXQUOTAS);
+	fqs->qs_btimelimit = state.s_state[type].spc_timelimit;
+	fqs->qs_itimelimit = state.s_state[type].ino_timelimit;
+	fqs->qs_rtbtimelimit = state.s_state[type].rt_spc_timelimit;
+	fqs->qs_bwarnlimit = state.s_state[type].spc_warnlimit;
+	fqs->qs_iwarnlimit = state.s_state[type].ino_warnlimit;
+	if (state.s_state[USRQUOTA].flags & QCI_ACCT_ENABLED) {
+		fqs->qs_uquota.qfs_ino = state.s_state[USRQUOTA].ino;
+		fqs->qs_uquota.qfs_nblks = state.s_state[USRQUOTA].blocks;
+		fqs->qs_uquota.qfs_nextents = state.s_state[USRQUOTA].nextents;
+	}
+	if (state.s_state[GRPQUOTA].flags & QCI_ACCT_ENABLED) {
+		fqs->qs_gquota.qfs_ino = state.s_state[GRPQUOTA].ino;
+		fqs->qs_gquota.qfs_nblks = state.s_state[GRPQUOTA].blocks;
+		fqs->qs_gquota.qfs_nextents = state.s_state[GRPQUOTA].nextents;
+	}
+	if (state.s_state[PRJQUOTA].flags & QCI_ACCT_ENABLED) {
+		/*
+		 * Q_XGETQSTAT doesn't have room for both group and project
+		 * quotas.  So, allow the project quota values to be copied out
+		 * only if there is no group quota information available.
+		 */
+		if (!(state.s_state[GRPQUOTA].flags & QCI_ACCT_ENABLED)) {
+			fqs->qs_gquota.qfs_ino = state.s_state[PRJQUOTA].ino;
+			fqs->qs_gquota.qfs_nblks =
+					state.s_state[PRJQUOTA].blocks;
+			fqs->qs_gquota.qfs_nextents =
+					state.s_state[PRJQUOTA].nextents;
+		}
+	}
+	return 0;
+}
+
 static int quota_getxstate(struct super_block *sb, void __user *addr)
 {
 	struct fs_quota_stat fqs;
 	int ret;
 
-	if (!sb->s_qcop->get_xstate)
+	if (!sb->s_qcop->get_xstate && !sb->s_qcop->get_state)
 		return -ENOSYS;
-	ret = sb->s_qcop->get_xstate(sb, &fqs);
+	if (sb->s_qcop->get_state)
+		ret = quota_getstate(sb, &fqs);
+	else
+		ret = sb->s_qcop->get_xstate(sb, &fqs);
 	if (!ret && copy_to_user(addr, &fqs, sizeof(fqs)))
 		return -EFAULT;
 	return ret;
 }
 
+static int quota_getstatev(struct super_block *sb, struct fs_quota_statv *fqs)
+{
+	int type;
+	struct qc_state state;
+	int ret;
+
+	ret = sb->s_qcop->get_state(sb, &state);
+	if (ret < 0)
+		return ret;
+
+	memset(fqs, 0, sizeof(*fqs));
+	fqs->qs_version = FS_QSTAT_VERSION;
+	fqs->qs_flags = quota_state_to_flags(&state);
+	/* No quota enabled? */
+	if (!fqs->qs_flags)
+		return -ENOSYS;
+	fqs->qs_incoredqs = state.s_incoredqs;
+	/*
+	 * GETXSTATV quotactl has space for just one set of time limits so
+	 * report them for the first enabled quota type
+	 */
+	for (type = 0; type < XQM_MAXQUOTAS; type++)
+		if (state.s_state[type].flags & QCI_ACCT_ENABLED)
+			break;
+	BUG_ON(type == XQM_MAXQUOTAS);
+	fqs->qs_btimelimit = state.s_state[type].spc_timelimit;
+	fqs->qs_itimelimit = state.s_state[type].ino_timelimit;
+	fqs->qs_rtbtimelimit = state.s_state[type].rt_spc_timelimit;
+	fqs->qs_bwarnlimit = state.s_state[type].spc_warnlimit;
+	fqs->qs_iwarnlimit = state.s_state[type].ino_warnlimit;
+	if (state.s_state[USRQUOTA].flags & QCI_ACCT_ENABLED) {
+		fqs->qs_uquota.qfs_ino = state.s_state[USRQUOTA].ino;
+		fqs->qs_uquota.qfs_nblks = state.s_state[USRQUOTA].blocks;
+		fqs->qs_uquota.qfs_nextents = state.s_state[USRQUOTA].nextents;
+	}
+	if (state.s_state[GRPQUOTA].flags & QCI_ACCT_ENABLED) {
+		fqs->qs_gquota.qfs_ino = state.s_state[GRPQUOTA].ino;
+		fqs->qs_gquota.qfs_nblks = state.s_state[GRPQUOTA].blocks;
+		fqs->qs_gquota.qfs_nextents = state.s_state[GRPQUOTA].nextents;
+	}
+	if (state.s_state[PRJQUOTA].flags & QCI_ACCT_ENABLED) {
+		fqs->qs_pquota.qfs_ino = state.s_state[PRJQUOTA].ino;
+		fqs->qs_pquota.qfs_nblks = state.s_state[PRJQUOTA].blocks;
+		fqs->qs_pquota.qfs_nextents = state.s_state[PRJQUOTA].nextents;
+	}
+	return 0;
+}
+
 static int quota_getxstatev(struct super_block *sb, void __user *addr)
 {
 	struct fs_quota_statv fqs;
 	int ret;
 
-	if (!sb->s_qcop->get_xstatev)
+	if (!sb->s_qcop->get_xstatev && !sb->s_qcop->get_state)
 		return -ENOSYS;
 
 	memset(&fqs, 0, sizeof(fqs));
@@ -301,7 +428,10 @@ static int quota_getxstatev(struct super_block *sb, void __user *addr)
 	default:
 		return -EINVAL;
 	}
-	ret = sb->s_qcop->get_xstatev(sb, &fqs);
+	if (sb->s_qcop->get_state)
+		ret = quota_getstatev(sb, &fqs);
+	else
+		ret = sb->s_qcop->get_xstatev(sb, &fqs);
 	if (!ret && copy_to_user(addr, &fqs, sizeof(fqs)))
 		return -EFAULT;
 	return ret;
-- 
2.1.4

[Cluster-devel] [PATCH 3/8] xfs: Convert to using ->get_state callback

[Jan Kara]

Convert xfs to use ->get_state callback instead of ->get_xstate and
->get_xstatev.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/xfs/xfs_qm.h          |   4 --
 fs/xfs/xfs_qm_syscalls.c | 176 -----------------------------------------------
 fs/xfs/xfs_quotaops.c    |  98 +++++++++++++++++++-------
 3 files changed, 72 insertions(+), 206 deletions(-)

diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h
index 0d4d3590cf85..996a04064894 100644
--- a/fs/xfs/xfs_qm.h
+++ b/fs/xfs/xfs_qm.h
@@ -168,10 +168,6 @@ extern int		xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t,
 					uint, struct qc_dqblk *);
 extern int		xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
 					struct qc_dqblk *);
-extern int		xfs_qm_scall_getqstat(struct xfs_mount *,
-					struct fs_quota_stat *);
-extern int		xfs_qm_scall_getqstatv(struct xfs_mount *,
-					struct fs_quota_statv *);
 extern int		xfs_qm_scall_quotaon(struct xfs_mount *, uint);
 extern int		xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
 
diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
index 9b965db45800..9a25c9275fb3 100644
--- a/fs/xfs/xfs_qm_syscalls.c
+++ b/fs/xfs/xfs_qm_syscalls.c
@@ -38,7 +38,6 @@
 STATIC int	xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
 STATIC int	xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
 					uint);
-STATIC uint	xfs_qm_export_flags(uint);
 
 /*
  * Turn off quota accounting and/or enforcement for all udquots and/or
@@ -389,159 +388,6 @@ xfs_qm_scall_quotaon(
 	return 0;
 }
 
-
-/*
- * Return quota status information, such as uquota-off, enforcements, etc.
- * for Q_XGETQSTAT command.
- */
-int
-xfs_qm_scall_getqstat(
-	struct xfs_mount	*mp,
-	struct fs_quota_stat	*out)
-{
-	struct xfs_quotainfo	*q = mp->m_quotainfo;
-	struct xfs_inode	*uip = NULL;
-	struct xfs_inode	*gip = NULL;
-	struct xfs_inode	*pip = NULL;
-	bool                    tempuqip = false;
-	bool                    tempgqip = false;
-	bool                    temppqip = false;
-
-	memset(out, 0, sizeof(fs_quota_stat_t));
-
-	out->qs_version = FS_QSTAT_VERSION;
-	out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
-							(XFS_ALL_QUOTA_ACCT|
-							 XFS_ALL_QUOTA_ENFD));
-	uip = q->qi_uquotaip;
-	gip = q->qi_gquotaip;
-	pip = q->qi_pquotaip;
-	if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
-					0, 0, &uip) == 0)
-			tempuqip = true;
-	}
-	if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
-					0, 0, &gip) == 0)
-			tempgqip = true;
-	}
-	/*
-	 * Q_XGETQSTAT doesn't have room for both group and project quotas.
-	 * So, allow the project quota values to be copied out only if
-	 * there is no group quota information available.
-	 */
-	if (!gip) {
-		if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
-			if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
-						0, 0, &pip) == 0)
-				temppqip = true;
-		}
-	} else
-		pip = NULL;
-	if (uip) {
-		out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
-		out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
-		out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
-		if (tempuqip)
-			IRELE(uip);
-	}
-
-	if (gip) {
-		out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
-		out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
-		out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
-		if (tempgqip)
-			IRELE(gip);
-	}
-	if (pip) {
-		out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
-		out->qs_gquota.qfs_nblks = pip->i_d.di_nblocks;
-		out->qs_gquota.qfs_nextents = pip->i_d.di_nextents;
-		if (temppqip)
-			IRELE(pip);
-	}
-	out->qs_incoredqs = q->qi_dquots;
-	out->qs_btimelimit = q->qi_btimelimit;
-	out->qs_itimelimit = q->qi_itimelimit;
-	out->qs_rtbtimelimit = q->qi_rtbtimelimit;
-	out->qs_bwarnlimit = q->qi_bwarnlimit;
-	out->qs_iwarnlimit = q->qi_iwarnlimit;
-
-	return 0;
-}
-
-/*
- * Return quota status information, such as uquota-off, enforcements, etc.
- * for Q_XGETQSTATV command, to support separate project quota field.
- */
-int
-xfs_qm_scall_getqstatv(
-	struct xfs_mount	*mp,
-	struct fs_quota_statv	*out)
-{
-	struct xfs_quotainfo	*q = mp->m_quotainfo;
-	struct xfs_inode	*uip = NULL;
-	struct xfs_inode	*gip = NULL;
-	struct xfs_inode	*pip = NULL;
-	bool                    tempuqip = false;
-	bool                    tempgqip = false;
-	bool                    temppqip = false;
-
-	out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
-							(XFS_ALL_QUOTA_ACCT|
-							 XFS_ALL_QUOTA_ENFD));
-	out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
-	out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
-	out->qs_pquota.qfs_ino = mp->m_sb.sb_pquotino;
-
-	uip = q->qi_uquotaip;
-	gip = q->qi_gquotaip;
-	pip = q->qi_pquotaip;
-	if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
-					0, 0, &uip) == 0)
-			tempuqip = true;
-	}
-	if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
-					0, 0, &gip) == 0)
-			tempgqip = true;
-	}
-	if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
-					0, 0, &pip) == 0)
-			temppqip = true;
-	}
-	if (uip) {
-		out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
-		out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
-		if (tempuqip)
-			IRELE(uip);
-	}
-
-	if (gip) {
-		out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
-		out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
-		if (tempgqip)
-			IRELE(gip);
-	}
-	if (pip) {
-		out->qs_pquota.qfs_nblks = pip->i_d.di_nblocks;
-		out->qs_pquota.qfs_nextents = pip->i_d.di_nextents;
-		if (temppqip)
-			IRELE(pip);
-	}
-	out->qs_incoredqs = q->qi_dquots;
-	out->qs_btimelimit = q->qi_btimelimit;
-	out->qs_itimelimit = q->qi_itimelimit;
-	out->qs_rtbtimelimit = q->qi_rtbtimelimit;
-	out->qs_bwarnlimit = q->qi_bwarnlimit;
-	out->qs_iwarnlimit = q->qi_iwarnlimit;
-
-	return 0;
-}
-
 #define XFS_QC_MASK \
 	(QC_LIMIT_MASK | QC_TIMER_MASK | QC_WARNS_MASK)
 
@@ -873,28 +719,6 @@ out_put:
 	return error;
 }
 
-STATIC uint
-xfs_qm_export_flags(
-	uint flags)
-{
-	uint uflags;
-
-	uflags = 0;
-	if (flags & XFS_UQUOTA_ACCT)
-		uflags |= FS_QUOTA_UDQ_ACCT;
-	if (flags & XFS_GQUOTA_ACCT)
-		uflags |= FS_QUOTA_GDQ_ACCT;
-	if (flags & XFS_PQUOTA_ACCT)
-		uflags |= FS_QUOTA_PDQ_ACCT;
-	if (flags & XFS_UQUOTA_ENFD)
-		uflags |= FS_QUOTA_UDQ_ENFD;
-	if (flags & XFS_GQUOTA_ENFD)
-		uflags |= FS_QUOTA_GDQ_ENFD;
-	if (flags & XFS_PQUOTA_ENFD)
-		uflags |= FS_QUOTA_PDQ_ENFD;
-	return uflags;
-}
-
 
 STATIC int
 xfs_dqrele_inode(
diff --git a/fs/xfs/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c
index 6923905ab33d..df9835396c4f 100644
--- a/fs/xfs/xfs_quotaops.c
+++ b/fs/xfs/xfs_quotaops.c
@@ -23,45 +23,92 @@
 #include "xfs_inode.h"
 #include "xfs_quota.h"
 #include "xfs_trans.h"
+#include "xfs_trace.h"
+#include "xfs_icache.h"
 #include "xfs_qm.h"
 #include <linux/quota.h>
 
 
-STATIC int
-xfs_quota_type(int type)
+static void
+xfs_qm_fill_state(
+	struct qc_type_state *tstate,
+	struct xfs_mount *mp,
+	struct xfs_inode *ip,
+	xfs_ino_t ino)
 {
-	switch (type) {
-	case USRQUOTA:
-		return XFS_DQ_USER;
-	case GRPQUOTA:
-		return XFS_DQ_GROUP;
-	default:
-		return XFS_DQ_PROJ;
+	struct xfs_quotainfo *q = mp->m_quotainfo;
+	bool tempqip = false;
+
+	tstate->ino = ino;
+	if (!ip && ino == NULLFSINO)
+		return;
+	if (!ip) {
+		if (xfs_iget(mp, NULL, ino, 0, 0, &ip))
+			return;
+		tempqip = true;
 	}
+	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_warnlimit = q->qi_bwarnlimit;
+	tstate->ino_warnlimit = q->qi_iwarnlimit;
+	tstate->rt_spc_warnlimit = q->qi_rtbwarnlimit;
+	if (tempqip)
+		IRELE(ip);
 }
 
-STATIC int
-xfs_fs_get_xstate(
-	struct super_block	*sb,
-	struct fs_quota_stat	*fqs)
+/*
+ * Return quota status information, such as enforcements, quota file inode
+ * numbers etc.
+ */
+static int
+xfs_fs_get_quota_state(
+	struct super_block *sb,
+	struct qc_state *state)
 {
-	struct xfs_mount	*mp = XFS_M(sb);
+	struct xfs_mount *mp = XFS_M(sb);
+	struct xfs_quotainfo *q = mp->m_quotainfo;
 
+	memset(state, 0, sizeof(*state));
 	if (!XFS_IS_QUOTA_RUNNING(mp))
-		return -ENOSYS;
-	return xfs_qm_scall_getqstat(mp, fqs);
+		return 0;
+	state->s_incoredqs = q->qi_dquots;
+	if (XFS_IS_UQUOTA_RUNNING(mp))
+		state->s_state[USRQUOTA].flags |= QCI_ACCT_ENABLED;
+	if (XFS_IS_UQUOTA_ENFORCED(mp))
+		state->s_state[USRQUOTA].flags |= QCI_LIMITS_ENFORCED;
+	if (XFS_IS_GQUOTA_RUNNING(mp))
+		state->s_state[GRPQUOTA].flags |= QCI_ACCT_ENABLED;
+	if (XFS_IS_GQUOTA_ENFORCED(mp))
+		state->s_state[GRPQUOTA].flags |= QCI_LIMITS_ENFORCED;
+	if (XFS_IS_PQUOTA_RUNNING(mp))
+		state->s_state[PRJQUOTA].flags |= QCI_ACCT_ENABLED;
+	if (XFS_IS_PQUOTA_ENFORCED(mp))
+		state->s_state[PRJQUOTA].flags |= QCI_LIMITS_ENFORCED;
+
+	xfs_qm_fill_state(&state->s_state[USRQUOTA], mp, q->qi_uquotaip,
+			  mp->m_sb.sb_uquotino);
+	xfs_qm_fill_state(&state->s_state[GRPQUOTA], mp, q->qi_gquotaip,
+			  mp->m_sb.sb_gquotino);
+	xfs_qm_fill_state(&state->s_state[PRJQUOTA], mp, q->qi_pquotaip,
+			  mp->m_sb.sb_pquotino);
+	return 0;
 }
 
 STATIC int
-xfs_fs_get_xstatev(
-	struct super_block	*sb,
-	struct fs_quota_statv	*fqs)
+xfs_quota_type(int type)
 {
-	struct xfs_mount	*mp = XFS_M(sb);
-
-	if (!XFS_IS_QUOTA_RUNNING(mp))
-		return -ENOSYS;
-	return xfs_qm_scall_getqstatv(mp, fqs);
+	switch (type) {
+	case USRQUOTA:
+		return XFS_DQ_USER;
+	case GRPQUOTA:
+		return XFS_DQ_GROUP;
+	default:
+		return XFS_DQ_PROJ;
+	}
 }
 
 static unsigned int
@@ -178,8 +225,7 @@ xfs_fs_set_dqblk(
 }
 
 const struct quotactl_ops xfs_quotactl_operations = {
-	.get_xstatev		= xfs_fs_get_xstatev,
-	.get_xstate		= xfs_fs_get_xstate,
+	.get_state		= xfs_fs_get_quota_state,
 	.quota_enable		= xfs_quota_enable,
 	.quota_disable		= xfs_quota_disable,
 	.rm_xquota		= xfs_fs_rm_xquota,
-- 
2.1.4

[Cluster-devel] [PATCH 3/8] xfs: Convert to using ->get_state callback

[Christoph Hellwig]

> +static void
> +xfs_qm_fill_state(
> +	struct qc_type_state *tstate,
> +	struct xfs_mount *mp,
> +	struct xfs_inode *ip,
> +	xfs_ino_t ino)

> +/*
> + * Return quota status information, such as enforcements, quota file inode
> + * numbers etc.
> + */
> +static int
> +xfs_fs_get_quota_state(
> +	struct super_block *sb,
> +	struct qc_state *state)

We usually tab-align the arguments in XFS prototypes.


Otherwise this patch looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>

[Cluster-devel] [PATCH 3/8] xfs: Convert to using ->get_state callback

[Jan Kara]

On Wed 18-02-15 08:51:54, Christoph Hellwig wrote:
> > +static void
> > +xfs_qm_fill_state(
> > +	struct qc_type_state *tstate,
> > +	struct xfs_mount *mp,
> > +	struct xfs_inode *ip,
> > +	xfs_ino_t ino)
> 
> > +/*
> > + * Return quota status information, such as enforcements, quota file inode
> > + * numbers etc.
> > + */
> > +static int
> > +xfs_fs_get_quota_state(
> > +	struct super_block *sb,
> > +	struct qc_state *state)
> 
> We usually tab-align the arguments in XFS prototypes.
  OK, fixed.

> Otherwise this patch looks good,
> 
> Reviewed-by: Christoph Hellwig <hch@lst.de>
  Thanks.

								Honza
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

[Cluster-devel] [PATCH 4/8] gfs2: Convert to using ->get_state callback

[Jan Kara]

Convert gfs2 to use ->get_state callback instead of ->get_xstate.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/gfs2/quota.c | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 3e193cb36996..c76e031ccbb4 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -1467,32 +1467,34 @@ int gfs2_quotad(void *data)
 	return 0;
 }
 
-static int gfs2_quota_get_xstate(struct super_block *sb,
-				 struct fs_quota_stat *fqs)
+static int gfs2_quota_get_state(struct super_block *sb, struct qc_state *state)
 {
 	struct gfs2_sbd *sdp = sb->s_fs_info;
 
-	memset(fqs, 0, sizeof(struct fs_quota_stat));
-	fqs->qs_version = FS_QSTAT_VERSION;
+	memset(state, 0, sizeof(*state));
 
 	switch (sdp->sd_args.ar_quota) {
 	case GFS2_QUOTA_ON:
-		fqs->qs_flags |= (FS_QUOTA_UDQ_ENFD | FS_QUOTA_GDQ_ENFD);
+		state->s_state[USRQUOTA].flags |= QCI_LIMITS_ENFORCED;
+		state->s_state[GRPQUOTA].flags |= QCI_LIMITS_ENFORCED;
 		/*FALLTHRU*/
 	case GFS2_QUOTA_ACCOUNT:
-		fqs->qs_flags |= (FS_QUOTA_UDQ_ACCT | FS_QUOTA_GDQ_ACCT);
+		state->s_state[USRQUOTA].flags |= QCI_ACCT_ENABLED |
+						  QCI_SYSFILE;
+		state->s_state[GRPQUOTA].flags |= QCI_ACCT_ENABLED |
+						  QCI_SYSFILE;
 		break;
 	case GFS2_QUOTA_OFF:
 		break;
 	}
-
 	if (sdp->sd_quota_inode) {
-		fqs->qs_uquota.qfs_ino = GFS2_I(sdp->sd_quota_inode)->i_no_addr;
-		fqs->qs_uquota.qfs_nblks = sdp->sd_quota_inode->i_blocks;
+		state->s_state[USRQUOTA].ino =
+					GFS2_I(sdp->sd_quota_inode)->i_no_addr;
+		state->s_state[USRQUOTA].blocks = sdp->sd_quota_inode->i_blocks;
 	}
-	fqs->qs_uquota.qfs_nextents = 1; /* unsupported */
-	fqs->qs_gquota = fqs->qs_uquota; /* its the same inode in both cases */
-	fqs->qs_incoredqs = list_lru_count(&gfs2_qd_lru);
+	state->s_state[USRQUOTA].nextents = 1;	/* unsupported */
+	state->s_state[GRPQUOTA] = state->s_state[USRQUOTA];
+	state->s_incoredqs = list_lru_count(&gfs2_qd_lru);
 	return 0;
 }
 
@@ -1637,7 +1639,7 @@ out_put:
 
 const struct quotactl_ops gfs2_quotactl_ops = {
 	.quota_sync     = gfs2_quota_sync,
-	.get_xstate     = gfs2_quota_get_xstate,
+	.get_state	= gfs2_quota_get_state,
 	.get_dqblk	= gfs2_get_dqblk,
 	.set_dqblk	= gfs2_set_dqblk,
 };
-- 
2.1.4

[Cluster-devel] [PATCH 4/8] gfs2: Convert to using ->get_state callback

[Bob Peterson]

----- Original Message -----
> Convert gfs2 to use ->get_state callback instead of ->get_xstate.
> 
> Signed-off-by: Jan Kara <jack@suse.cz>
> ---
>  fs/gfs2/quota.c | 28 +++++++++++++++-------------
>  1 file changed, 15 insertions(+), 13 deletions(-)
> 
> diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
> index 3e193cb36996..c76e031ccbb4 100644
> --- a/fs/gfs2/quota.c
> +++ b/fs/gfs2/quota.c
> @@ -1467,32 +1467,34 @@ int gfs2_quotad(void *data)
>  	return 0;
>  }
>  
> -static int gfs2_quota_get_xstate(struct super_block *sb,
> -				 struct fs_quota_stat *fqs)
> +static int gfs2_quota_get_state(struct super_block *sb, struct qc_state
> *state)
>  {
>  	struct gfs2_sbd *sdp = sb->s_fs_info;
>  
> -	memset(fqs, 0, sizeof(struct fs_quota_stat));
> -	fqs->qs_version = FS_QSTAT_VERSION;
> +	memset(state, 0, sizeof(*state));
>  
>  	switch (sdp->sd_args.ar_quota) {
>  	case GFS2_QUOTA_ON:
> -		fqs->qs_flags |= (FS_QUOTA_UDQ_ENFD | FS_QUOTA_GDQ_ENFD);
> +		state->s_state[USRQUOTA].flags |= QCI_LIMITS_ENFORCED;
> +		state->s_state[GRPQUOTA].flags |= QCI_LIMITS_ENFORCED;
>  		/*FALLTHRU*/
>  	case GFS2_QUOTA_ACCOUNT:
> -		fqs->qs_flags |= (FS_QUOTA_UDQ_ACCT | FS_QUOTA_GDQ_ACCT);
> +		state->s_state[USRQUOTA].flags |= QCI_ACCT_ENABLED |
> +						  QCI_SYSFILE;
> +		state->s_state[GRPQUOTA].flags |= QCI_ACCT_ENABLED |
> +						  QCI_SYSFILE;
>  		break;
>  	case GFS2_QUOTA_OFF:
>  		break;
>  	}
> -
>  	if (sdp->sd_quota_inode) {
> -		fqs->qs_uquota.qfs_ino = GFS2_I(sdp->sd_quota_inode)->i_no_addr;
> -		fqs->qs_uquota.qfs_nblks = sdp->sd_quota_inode->i_blocks;
> +		state->s_state[USRQUOTA].ino =
> +					GFS2_I(sdp->sd_quota_inode)->i_no_addr;
> +		state->s_state[USRQUOTA].blocks = sdp->sd_quota_inode->i_blocks;
>  	}
> -	fqs->qs_uquota.qfs_nextents = 1; /* unsupported */
> -	fqs->qs_gquota = fqs->qs_uquota; /* its the same inode in both cases */
> -	fqs->qs_incoredqs = list_lru_count(&gfs2_qd_lru);
> +	state->s_state[USRQUOTA].nextents = 1;	/* unsupported */
> +	state->s_state[GRPQUOTA] = state->s_state[USRQUOTA];
> +	state->s_incoredqs = list_lru_count(&gfs2_qd_lru);
>  	return 0;
>  }
>  
> @@ -1637,7 +1639,7 @@ out_put:
>  
>  const struct quotactl_ops gfs2_quotactl_ops = {
>  	.quota_sync     = gfs2_quota_sync,
> -	.get_xstate     = gfs2_quota_get_xstate,
> +	.get_state	= gfs2_quota_get_state,
>  	.get_dqblk	= gfs2_get_dqblk,
>  	.set_dqblk	= gfs2_set_dqblk,
>  };
> --
> 2.1.4
> 
> 

ACK

Looks right.

Bob Peterson
Red Hat File Systems

[Cluster-devel] [PATCH 5/8] quota: Remove ->get_xstate and ->get_xstatev callbacks

[Jan Kara]

These callbacks are now unused. Remove them.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/quota/quota.c      | 14 ++++----------
 include/linux/quota.h |  2 --
 2 files changed, 4 insertions(+), 12 deletions(-)

diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 83939ff4c444..20d11cd21247 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -350,12 +350,9 @@ static int quota_getxstate(struct super_block *sb, void __user *addr)
 	struct fs_quota_stat fqs;
 	int ret;
 
-	if (!sb->s_qcop->get_xstate && !sb->s_qcop->get_state)
+	if (!sb->s_qcop->get_state)
 		return -ENOSYS;
-	if (sb->s_qcop->get_state)
-		ret = quota_getstate(sb, &fqs);
-	else
-		ret = sb->s_qcop->get_xstate(sb, &fqs);
+	ret = quota_getstate(sb, &fqs);
 	if (!ret && copy_to_user(addr, &fqs, sizeof(fqs)))
 		return -EFAULT;
 	return ret;
@@ -414,7 +411,7 @@ static int quota_getxstatev(struct super_block *sb, void __user *addr)
 	struct fs_quota_statv fqs;
 	int ret;
 
-	if (!sb->s_qcop->get_xstatev && !sb->s_qcop->get_state)
+	if (!sb->s_qcop->get_state)
 		return -ENOSYS;
 
 	memset(&fqs, 0, sizeof(fqs));
@@ -428,10 +425,7 @@ static int quota_getxstatev(struct super_block *sb, void __user *addr)
 	default:
 		return -EINVAL;
 	}
-	if (sb->s_qcop->get_state)
-		ret = quota_getstatev(sb, &fqs);
-	else
-		ret = sb->s_qcop->get_xstatev(sb, &fqs);
+	ret = quota_getstatev(sb, &fqs);
 	if (!ret && copy_to_user(addr, &fqs, sizeof(fqs)))
 		return -EFAULT;
 	return ret;
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 6ecac0f3b2ca..a07f2ed25284 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -408,8 +408,6 @@ struct quotactl_ops {
 	int (*get_dqblk)(struct super_block *, struct kqid, struct qc_dqblk *);
 	int (*set_dqblk)(struct super_block *, struct kqid, struct qc_dqblk *);
 	int (*get_state)(struct super_block *, struct qc_state *);
-	int (*get_xstate)(struct super_block *, struct fs_quota_stat *);
-	int (*get_xstatev)(struct super_block *, struct fs_quota_statv *);
 	int (*rm_xquota)(struct super_block *, unsigned int);
 };
 
-- 
2.1.4

[Cluster-devel] [PATCH 6/8] quota: Make ->set_info use structure with neccesary info to VFS and XFS

[Jan Kara]

Change ->set_info to take new qc_info structure which contains all the
necessary information both for XFS and VFS. Convert Q_SETINFO handler
to use this structure.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/quota/dquot.c         | 27 ++++++++++++++++-----------
 fs/quota/quota.c         | 21 ++++++++++++++++++++-
 include/linux/quota.h    | 21 +++++++++++++++++++--
 include/linux/quotaops.h |  2 +-
 4 files changed, 56 insertions(+), 15 deletions(-)

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index cf4edd87e854..f37b74eab807 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2649,33 +2649,38 @@ int dquot_get_state(struct super_block *sb, struct qc_state *state)
 EXPORT_SYMBOL(dquot_get_state);
 
 /* Generic routine for setting common part of quota file information */
-int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
+int dquot_set_dqinfo(struct super_block *sb, int type, struct qc_info *ii)
 {
 	struct mem_dqinfo *mi;
 	int err = 0;
 
+	if ((ii->i_fieldmask & QC_WARNS_MASK) ||
+	    (ii->i_fieldmask & QC_RT_SPC_TIMER))
+		return -EINVAL;
 	mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
 	if (!sb_has_quota_active(sb, type)) {
 		err = -ESRCH;
 		goto out;
 	}
 	mi = sb_dqopt(sb)->info + type;
-	if (ii->dqi_valid & IIF_FLAGS) {
-		if (ii->dqi_flags & ~DQF_SETINFO_MASK ||
-		    (ii->dqi_flags & DQF_ROOT_SQUASH &&
+	if (ii->i_fieldmask & QC_FLAGS) {
+		if ((ii->i_flags & QCI_ROOT_SQUASH &&
 		     mi->dqi_format->qf_fmt_id != QFMT_VFS_OLD)) {
 			err = -EINVAL;
 			goto out;
 		}
 	}
 	spin_lock(&dq_data_lock);
-	if (ii->dqi_valid & IIF_BGRACE)
-		mi->dqi_bgrace = ii->dqi_bgrace;
-	if (ii->dqi_valid & IIF_IGRACE)
-		mi->dqi_igrace = ii->dqi_igrace;
-	if (ii->dqi_valid & IIF_FLAGS)
-		mi->dqi_flags = (mi->dqi_flags & ~DQF_SETINFO_MASK) |
-				(ii->dqi_flags & DQF_SETINFO_MASK);
+	if (ii->i_fieldmask & QC_SPC_TIMER)
+		mi->dqi_bgrace = ii->i_spc_timelimit;
+	if (ii->i_fieldmask & QC_INO_TIMER)
+		mi->dqi_igrace = ii->i_ino_timelimit;
+	if (ii->i_fieldmask & QC_FLAGS) {
+		if (ii->i_flags & QCI_ROOT_SQUASH)
+			mi->dqi_flags |= DQF_ROOT_SQUASH;
+		else
+			mi->dqi_flags &= ~DQF_ROOT_SQUASH;
+	}
 	spin_unlock(&dq_data_lock);
 	mark_info_dirty(sb, type);
 	/* Force write to disk */
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 20d11cd21247..741d5a178268 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -149,12 +149,31 @@ static int quota_getinfo(struct super_block *sb, int type, void __user *addr)
 static int quota_setinfo(struct super_block *sb, int type, void __user *addr)
 {
 	struct if_dqinfo info;
+	struct qc_info qinfo;
 
 	if (copy_from_user(&info, addr, sizeof(info)))
 		return -EFAULT;
 	if (!sb->s_qcop->set_info)
 		return -ENOSYS;
-	return sb->s_qcop->set_info(sb, type, &info);
+	if (info.dqi_valid & ~(IIF_FLAGS | IIF_BGRACE | IIF_IGRACE))
+		return -EINVAL;
+	memset(&qinfo, 0, sizeof(qinfo));
+	if (info.dqi_valid & IIF_FLAGS) {
+		if (info.dqi_flags & ~DQF_SETINFO_MASK)
+			return -EINVAL;
+		if (info.dqi_flags & DQF_ROOT_SQUASH)
+			qinfo.i_flags |= QCI_ROOT_SQUASH;
+		qinfo.i_fieldmask |= QC_FLAGS;
+	}
+	if (info.dqi_valid & IIF_BGRACE) {
+		qinfo.i_spc_timelimit = info.dqi_bgrace;
+		qinfo.i_fieldmask |= QC_SPC_TIMER;
+	}
+	if (info.dqi_valid & IIF_IGRACE) {
+		qinfo.i_ino_timelimit = info.dqi_igrace;
+		qinfo.i_fieldmask |= QC_INO_TIMER;
+	}
+	return sb->s_qcop->set_info(sb, type, &qinfo);
 }
 
 static inline qsize_t qbtos(qsize_t blocks)
diff --git a/include/linux/quota.h b/include/linux/quota.h
index a07f2ed25284..3d521199a0bd 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -344,7 +344,10 @@ struct qc_dqblk {
 	int d_rt_spc_warns;	/* # warnings issued wrt RT space */
 };
 
-/* Field specifiers for ->set_dqblk() in struct qc_dqblk */
+/*
+ * Field specifiers for ->set_dqblk() in struct qc_dqblk and also for
+ * ->set_info() in struct qc_info
+ */
 #define	QC_INO_SOFT	(1<<0)
 #define	QC_INO_HARD	(1<<1)
 #define	QC_SPC_SOFT	(1<<2)
@@ -365,6 +368,7 @@ struct qc_dqblk {
 #define	QC_INO_COUNT	(1<<13)
 #define	QC_RT_SPACE	(1<<14)
 #define QC_ACCT_MASK (QC_SPACE | QC_INO_COUNT | QC_RT_SPACE)
+#define QC_FLAGS	(1<<15)
 
 #define QCI_SYSFILE		(1 << 0)	/* Quota file is hidden from userspace */
 #define QCI_ROOT_SQUASH		(1 << 1)	/* Root squash turned on */
@@ -397,6 +401,19 @@ struct qc_state {
 	struct qc_type_state s_state[XQM_MAXQUOTAS];
 };
 
+/* Structure for communicating via ->set_info */
+struct qc_info {
+	int i_fieldmask;	/* mask of fields to change in ->set_info() */
+	unsigned int i_flags;		/* Flags QCI_* */
+	unsigned int i_spc_timelimit;	/* Time after which space softlimit is
+					 * enforced */
+	unsigned int i_ino_timelimit;	/* Ditto for inode softlimit */
+	unsigned int i_rt_spc_timelimit;/* Ditto for real-time space */
+	unsigned int i_spc_warnlimit;	/* Limit for number of space warnings */
+	unsigned int i_ino_warnlimit;	/* Limit for number of inode warnings */
+	unsigned int i_rt_spc_warnlimit;	/* Ditto for real-time space */
+};
+
 /* Operations handling requests from userspace */
 struct quotactl_ops {
 	int (*quota_on)(struct super_block *, int, int, struct path *);
@@ -404,7 +421,7 @@ struct quotactl_ops {
 	int (*quota_enable)(struct super_block *, unsigned int);
 	int (*quota_disable)(struct super_block *, unsigned int);
 	int (*quota_sync)(struct super_block *, int);
-	int (*set_info)(struct super_block *, int, struct if_dqinfo *);
+	int (*set_info)(struct super_block *, int, struct qc_info *);
 	int (*get_dqblk)(struct super_block *, struct kqid, struct qc_dqblk *);
 	int (*set_dqblk)(struct super_block *, struct kqid, struct qc_dqblk *);
 	int (*get_state)(struct super_block *, struct qc_state *);
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 6509a29523e2..9f4b07ba9e8c 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -96,7 +96,7 @@ int dquot_quota_off(struct super_block *sb, int type);
 int dquot_writeback_dquots(struct super_block *sb, int type);
 int dquot_quota_sync(struct super_block *sb, int type);
 int dquot_get_state(struct super_block *sb, struct qc_state *state);
-int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
+int dquot_set_dqinfo(struct super_block *sb, int type, struct qc_info *ii);
 int dquot_get_dqblk(struct super_block *sb, struct kqid id,
 		struct qc_dqblk *di);
 int dquot_set_dqblk(struct super_block *sb, struct kqid id,
-- 
2.1.4

[Cluster-devel] [PATCH 6/8] quota: Make ->set_info use structure with neccesary info to VFS and XFS

[Christoph Hellwig]

On Wed, Feb 18, 2015 at 02:47:52PM +0100, Jan Kara wrote:
> Change ->set_info to take new qc_info structure which contains all the
> necessary information both for XFS and VFS. Convert Q_SETINFO handler
> to use this structure.
> 
> Signed-off-by: Jan Kara <jack@suse.cz>
> ---
>  fs/quota/dquot.c         | 27 ++++++++++++++++-----------
>  fs/quota/quota.c         | 21 ++++++++++++++++++++-
>  include/linux/quota.h    | 21 +++++++++++++++++++--
>  include/linux/quotaops.h |  2 +-
>  4 files changed, 56 insertions(+), 15 deletions(-)
> 
> diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
> index cf4edd87e854..f37b74eab807 100644
> --- a/fs/quota/dquot.c
> +++ b/fs/quota/dquot.c
> @@ -2649,33 +2649,38 @@ int dquot_get_state(struct super_block *sb, struct qc_state *state)
>  EXPORT_SYMBOL(dquot_get_state);
>  
>  /* Generic routine for setting common part of quota file information */
> -int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
> +int dquot_set_dqinfo(struct super_block *sb, int type, struct qc_info *ii)
>  {
>  	struct mem_dqinfo *mi;
>  	int err = 0;
>  
> +	if ((ii->i_fieldmask & QC_WARNS_MASK) ||
> +	    (ii->i_fieldmask & QC_RT_SPC_TIMER))
> +		return -EINVAL;
>  	mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
>  	if (!sb_has_quota_active(sb, type)) {
>  		err = -ESRCH;
>  		goto out;
>  	}
>  	mi = sb_dqopt(sb)->info + type;
> -	if (ii->dqi_valid & IIF_FLAGS) {
> -		if (ii->dqi_flags & ~DQF_SETINFO_MASK ||
> -		    (ii->dqi_flags & DQF_ROOT_SQUASH &&
> +	if (ii->i_fieldmask & QC_FLAGS) {
> +		if ((ii->i_flags & QCI_ROOT_SQUASH &&
>  		     mi->dqi_format->qf_fmt_id != QFMT_VFS_OLD)) {
>  			err = -EINVAL;
>  			goto out;
>  		}
>  	}
>  	spin_lock(&dq_data_lock);
> -	if (ii->dqi_valid & IIF_BGRACE)
> -		mi->dqi_bgrace = ii->dqi_bgrace;
> -	if (ii->dqi_valid & IIF_IGRACE)
> -		mi->dqi_igrace = ii->dqi_igrace;
> -	if (ii->dqi_valid & IIF_FLAGS)
> -		mi->dqi_flags = (mi->dqi_flags & ~DQF_SETINFO_MASK) |
> -				(ii->dqi_flags & DQF_SETINFO_MASK);
> +	if (ii->i_fieldmask & QC_SPC_TIMER)
> +		mi->dqi_bgrace = ii->i_spc_timelimit;
> +	if (ii->i_fieldmask & QC_INO_TIMER)
> +		mi->dqi_igrace = ii->i_ino_timelimit;
> +	if (ii->i_fieldmask & QC_FLAGS) {
> +		if (ii->i_flags & QCI_ROOT_SQUASH)
> +			mi->dqi_flags |= DQF_ROOT_SQUASH;
> +		else
> +			mi->dqi_flags &= ~DQF_ROOT_SQUASH;
> +	}
>  	spin_unlock(&dq_data_lock);
>  	mark_info_dirty(sb, type);
>  	/* Force write to disk */
> diff --git a/fs/quota/quota.c b/fs/quota/quota.c
> index 20d11cd21247..741d5a178268 100644
> --- a/fs/quota/quota.c
> +++ b/fs/quota/quota.c
> @@ -149,12 +149,31 @@ static int quota_getinfo(struct super_block *sb, int type, void __user *addr)
>  static int quota_setinfo(struct super_block *sb, int type, void __user *addr)
>  {
>  	struct if_dqinfo info;
> +	struct qc_info qinfo;
>  
>  	if (copy_from_user(&info, addr, sizeof(info)))
>  		return -EFAULT;
>  	if (!sb->s_qcop->set_info)
>  		return -ENOSYS;
> -	return sb->s_qcop->set_info(sb, type, &info);
> +	if (info.dqi_valid & ~(IIF_FLAGS | IIF_BGRACE | IIF_IGRACE))
> +		return -EINVAL;
> +	memset(&qinfo, 0, sizeof(qinfo));
> +	if (info.dqi_valid & IIF_FLAGS) {
> +		if (info.dqi_flags & ~DQF_SETINFO_MASK)
> +			return -EINVAL;
> +		if (info.dqi_flags & DQF_ROOT_SQUASH)
> +			qinfo.i_flags |= QCI_ROOT_SQUASH;
> +		qinfo.i_fieldmask |= QC_FLAGS;
> +	}
> +	if (info.dqi_valid & IIF_BGRACE) {
> +		qinfo.i_spc_timelimit = info.dqi_bgrace;
> +		qinfo.i_fieldmask |= QC_SPC_TIMER;
> +	}
> +	if (info.dqi_valid & IIF_IGRACE) {
> +		qinfo.i_ino_timelimit = info.dqi_igrace;
> +		qinfo.i_fieldmask |= QC_INO_TIMER;
> +	}
> +	return sb->s_qcop->set_info(sb, type, &qinfo);
>  }
>  
>  static inline qsize_t qbtos(qsize_t blocks)
> diff --git a/include/linux/quota.h b/include/linux/quota.h
> index a07f2ed25284..3d521199a0bd 100644
> --- a/include/linux/quota.h
> +++ b/include/linux/quota.h
> @@ -344,7 +344,10 @@ struct qc_dqblk {
>  	int d_rt_spc_warns;	/* # warnings issued wrt RT space */
>  };
>  
> -/* Field specifiers for ->set_dqblk() in struct qc_dqblk */
> +/*
> + * Field specifiers for ->set_dqblk() in struct qc_dqblk and also for
> + * ->set_info() in struct qc_info
> + */
>  #define	QC_INO_SOFT	(1<<0)
>  #define	QC_INO_HARD	(1<<1)
>  #define	QC_SPC_SOFT	(1<<2)
> @@ -365,6 +368,7 @@ struct qc_dqblk {
>  #define	QC_INO_COUNT	(1<<13)
>  #define	QC_RT_SPACE	(1<<14)
>  #define QC_ACCT_MASK (QC_SPACE | QC_INO_COUNT | QC_RT_SPACE)
> +#define QC_FLAGS	(1<<15)
>  
>  #define QCI_SYSFILE		(1 << 0)	/* Quota file is hidden from userspace */
>  #define QCI_ROOT_SQUASH		(1 << 1)	/* Root squash turned on */
> @@ -397,6 +401,19 @@ struct qc_state {
>  	struct qc_type_state s_state[XQM_MAXQUOTAS];
>  };
>  
> +/* Structure for communicating via ->set_info */
> +struct qc_info {
> +	int i_fieldmask;	/* mask of fields to change in ->set_info() */
> +	unsigned int i_flags;		/* Flags QCI_* */
> +	unsigned int i_spc_timelimit;	/* Time after which space softlimit is
> +					 * enforced */
> +	unsigned int i_ino_timelimit;	/* Ditto for inode softlimit */
> +	unsigned int i_rt_spc_timelimit;/* Ditto for real-time space */
> +	unsigned int i_spc_warnlimit;	/* Limit for number of space warnings */
> +	unsigned int i_ino_warnlimit;	/* Limit for number of inode warnings */
> +	unsigned int i_rt_spc_warnlimit;	/* Ditto for real-time space */
> +};

What does the i_ prefix stand for?

Otherwise this looks fine to me.

[Cluster-devel] [PATCH 6/8] quota: Make ->set_info use structure with neccesary info to VFS and XFS

[Jan Kara]

On Wed 18-02-15 08:53:34, Christoph Hellwig wrote:
> On Wed, Feb 18, 2015 at 02:47:52PM +0100, Jan Kara wrote:
> > Change ->set_info to take new qc_info structure which contains all the
> > necessary information both for XFS and VFS. Convert Q_SETINFO handler
> > to use this structure.
...
> > +/* Structure for communicating via ->set_info */
> > +struct qc_info {
> > +	int i_fieldmask;	/* mask of fields to change in ->set_info() */
> > +	unsigned int i_flags;		/* Flags QCI_* */
> > +	unsigned int i_spc_timelimit;	/* Time after which space softlimit is
> > +					 * enforced */
> > +	unsigned int i_ino_timelimit;	/* Ditto for inode softlimit */
> > +	unsigned int i_rt_spc_timelimit;/* Ditto for real-time space */
> > +	unsigned int i_spc_warnlimit;	/* Limit for number of space warnings */
> > +	unsigned int i_ino_warnlimit;	/* Limit for number of inode warnings */
> > +	unsigned int i_rt_spc_warnlimit;	/* Ditto for real-time space */
> > +};
> 
> What does the i_ prefix stand for?
  It stands for info. I can change it e.g. to qci_ for quotactl info if you
think that would be better...

								Honza
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

[Cluster-devel] [PATCH 7/8] xfs: Add support for Q_SETINFO

[Jan Kara]

Add support to XFS so that time limits can be set through Q_SETINFO
quotactl.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/xfs/xfs_quotaops.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/fs/xfs/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c
index df9835396c4f..bbe8ddf1f700 100644
--- a/fs/xfs/xfs_quotaops.c
+++ b/fs/xfs/xfs_quotaops.c
@@ -111,6 +111,42 @@ xfs_quota_type(int type)
 	}
 }
 
+#define XFS_QC_SETINFO_MASK (QC_TIMER_MASK | QC_WARNS_MASK)
+
+/*
+ * Adjust quota timers & warnings
+ */
+static int
+xfs_fs_set_info(
+	struct super_block *sb,
+	int type,
+	struct qc_info *info)
+{
+	struct xfs_mount *mp = XFS_M(sb);
+	struct qc_dqblk newlim;
+
+	if (sb->s_flags & MS_RDONLY)
+		return -EROFS;
+	if (!XFS_IS_QUOTA_RUNNING(mp))
+		return -ENOSYS;
+	if (!XFS_IS_QUOTA_ON(mp))
+		return -ESRCH;
+	if (info->i_fieldmask & ~XFS_QC_SETINFO_MASK)
+		return -EINVAL;
+	if ((info->i_fieldmask & XFS_QC_SETINFO_MASK) == 0)
+		return 0;
+
+	newlim.d_fieldmask = info->i_fieldmask;
+	newlim.d_spc_timer = info->i_spc_timelimit;
+	newlim.d_ino_timer = info->i_ino_timelimit;
+	newlim.d_rt_spc_timer = info->i_rt_spc_timelimit;
+	newlim.d_ino_warns = info->i_ino_warnlimit;
+	newlim.d_spc_warns = info->i_spc_warnlimit;
+	newlim.d_rt_spc_warns = info->i_rt_spc_warnlimit;
+
+	return xfs_qm_scall_setqlim(mp, 0, xfs_quota_type(type), &newlim);
+}
+
 static unsigned int
 xfs_quota_flags(unsigned int uflags)
 {
@@ -226,6 +262,7 @@ xfs_fs_set_dqblk(
 
 const struct quotactl_ops xfs_quotactl_operations = {
 	.get_state		= xfs_fs_get_quota_state,
+	.set_info		= xfs_fs_set_info,
 	.quota_enable		= xfs_quota_enable,
 	.quota_disable		= xfs_quota_disable,
 	.rm_xquota		= xfs_fs_rm_xquota,
-- 
2.1.4

[Cluster-devel] [PATCH 7/8] xfs: Add support for Q_SETINFO

[Christoph Hellwig]

Looks fine except for the cosmetical argument alignment style issue.

Reviewed-by: Christoph Hellwig <hch@lst.de>

[Cluster-devel] [PATCH 7/8] xfs: Add support for Q_SETINFO

[Jan Kara]

On Wed 18-02-15 08:54:12, Christoph Hellwig wrote:
> Looks fine except for the cosmetical argument alignment style issue.
  OK, fixed.
 
> Reviewed-by: Christoph Hellwig <hch@lst.de>
								Honza
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

[Cluster-devel] [PATCH 8/8] quota: Hook up Q_XSETQLIM for id 0 to ->set_info

[Jan Kara]

Setting timers or warning counts for id 0 via Q_XSETQLIM is used to
actually set time limits and warning limits for all users. Hook up
->set_info to this so that VFS quota time limits get set the same
way as XFS ones.

When doing this Q_XSETQLIM for XFS is effectively split into two
independent transactions - one for setting timers and warning limits and
one for setting space and inode limits. Although this is inefficient, it
is rare enough that it does not matter.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/quota/quota.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 741d5a178268..86ded7375c21 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -517,6 +517,30 @@ static void copy_from_xfs_dqblk(struct qc_dqblk *dst, struct fs_disk_quota *src)
 		dst->d_fieldmask |= QC_RT_SPACE;
 }
 
+static void copy_qcinfo_from_xfs_dqblk(struct qc_info *dst,
+				       struct fs_disk_quota *src)
+{
+	memset(dst, 0, sizeof(*dst));
+	dst->i_spc_timelimit = src->d_btimer;
+	dst->i_ino_timelimit = src->d_itimer;
+	dst->i_rt_spc_timelimit = src->d_rtbtimer;
+	dst->i_ino_warnlimit = src->d_iwarns;
+	dst->i_spc_warnlimit = src->d_bwarns;
+	dst->i_rt_spc_warnlimit = src->d_rtbwarns;
+	if (src->d_fieldmask & FS_DQ_BWARNS)
+		dst->i_fieldmask |= QC_SPC_WARNS;
+	if (src->d_fieldmask & FS_DQ_IWARNS)
+		dst->i_fieldmask |= QC_INO_WARNS;
+	if (src->d_fieldmask & FS_DQ_RTBWARNS)
+		dst->i_fieldmask |= QC_RT_SPC_WARNS;
+	if (src->d_fieldmask & FS_DQ_BTIMER)
+		dst->i_fieldmask |= QC_SPC_TIMER;
+	if (src->d_fieldmask & FS_DQ_ITIMER)
+		dst->i_fieldmask |= QC_INO_TIMER;
+	if (src->d_fieldmask & FS_DQ_RTBTIMER)
+		dst->i_fieldmask |= QC_RT_SPC_TIMER;
+}
+
 static int quota_setxquota(struct super_block *sb, int type, qid_t id,
 			   void __user *addr)
 {
@@ -531,6 +555,21 @@ static int quota_setxquota(struct super_block *sb, int type, qid_t id,
 	qid = make_kqid(current_user_ns(), type, id);
 	if (!qid_valid(qid))
 		return -EINVAL;
+	/* Are we actually setting timer / warning limits for all users? */
+	if (from_kqid(&init_user_ns, qid) == 0 &&
+	    fdq.d_fieldmask & (FS_DQ_WARNS_MASK | FS_DQ_TIMER_MASK)) {
+		struct qc_info qinfo;
+		int ret;
+
+		if (!sb->s_qcop->set_info)
+			return -EINVAL;
+		copy_qcinfo_from_xfs_dqblk(&qinfo, &fdq);
+		ret = sb->s_qcop->set_info(sb, type, &qinfo);
+		if (ret)
+			return ret;
+		/* These are already done */
+		fdq.d_fieldmask &= ~(FS_DQ_WARNS_MASK | FS_DQ_TIMER_MASK);
+	}
 	copy_from_xfs_dqblk(&qdq, &fdq);
 	return sb->s_qcop->set_dqblk(sb, qid, &qdq);
 }
-- 
2.1.4

[Cluster-devel] [PATCH 8/8] quota: Hook up Q_XSETQLIM for id 0 to ->set_info

[Christoph Hellwig]

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>

[Cluster-devel] [PATCH 0/8 v6] quota: Unify VFS and XFS quota interfaces

[Jan Kara]

  Hello,

  these are outstanding patches in my series unifying VFS and XFS quota
interfaces so that XFS quotactls work for filesystems with VFS quotas and vice
versa.  This is useful so that userspace doesn't have to care that much about
which filesystem it is using at least when using basic quota functionality. In
particular we should be able to reuse project quota tests in xfstests for ext4.

The patches are based on top of Linus' tree from today which already contains
initial part of the original series.  The patch series can also be pulled from
'quota_interface' branch of my tree [1].

Since all the patches (except one quota patch) have Reviewed-by tags, I'll
push the patches to my tree in a few days and will send them to Linus for the
next merge window unless someone objects.

								Honza

[1] git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git

[Cluster-devel] [PATCH 3/8] xfs: Convert to using ->get_state callback

[Jan Kara]

Convert xfs to use ->get_state callback instead of ->get_xstate and
->get_xstatev.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/xfs/xfs_qm.h          |   4 --
 fs/xfs/xfs_qm_syscalls.c | 176 -----------------------------------------------
 fs/xfs/xfs_quotaops.c    |  96 +++++++++++++++++++-------
 3 files changed, 71 insertions(+), 205 deletions(-)

diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h
index 0d4d3590cf85..996a04064894 100644
--- a/fs/xfs/xfs_qm.h
+++ b/fs/xfs/xfs_qm.h
@@ -168,10 +168,6 @@ extern int		xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t,
 					uint, struct qc_dqblk *);
 extern int		xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
 					struct qc_dqblk *);
-extern int		xfs_qm_scall_getqstat(struct xfs_mount *,
-					struct fs_quota_stat *);
-extern int		xfs_qm_scall_getqstatv(struct xfs_mount *,
-					struct fs_quota_statv *);
 extern int		xfs_qm_scall_quotaon(struct xfs_mount *, uint);
 extern int		xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
 
diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
index 9b965db45800..9a25c9275fb3 100644
--- a/fs/xfs/xfs_qm_syscalls.c
+++ b/fs/xfs/xfs_qm_syscalls.c
@@ -38,7 +38,6 @@
 STATIC int	xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
 STATIC int	xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
 					uint);
-STATIC uint	xfs_qm_export_flags(uint);
 
 /*
  * Turn off quota accounting and/or enforcement for all udquots and/or
@@ -389,159 +388,6 @@ xfs_qm_scall_quotaon(
 	return 0;
 }
 
-
-/*
- * Return quota status information, such as uquota-off, enforcements, etc.
- * for Q_XGETQSTAT command.
- */
-int
-xfs_qm_scall_getqstat(
-	struct xfs_mount	*mp,
-	struct fs_quota_stat	*out)
-{
-	struct xfs_quotainfo	*q = mp->m_quotainfo;
-	struct xfs_inode	*uip = NULL;
-	struct xfs_inode	*gip = NULL;
-	struct xfs_inode	*pip = NULL;
-	bool                    tempuqip = false;
-	bool                    tempgqip = false;
-	bool                    temppqip = false;
-
-	memset(out, 0, sizeof(fs_quota_stat_t));
-
-	out->qs_version = FS_QSTAT_VERSION;
-	out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
-							(XFS_ALL_QUOTA_ACCT|
-							 XFS_ALL_QUOTA_ENFD));
-	uip = q->qi_uquotaip;
-	gip = q->qi_gquotaip;
-	pip = q->qi_pquotaip;
-	if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
-					0, 0, &uip) == 0)
-			tempuqip = true;
-	}
-	if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
-					0, 0, &gip) == 0)
-			tempgqip = true;
-	}
-	/*
-	 * Q_XGETQSTAT doesn't have room for both group and project quotas.
-	 * So, allow the project quota values to be copied out only if
-	 * there is no group quota information available.
-	 */
-	if (!gip) {
-		if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
-			if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
-						0, 0, &pip) == 0)
-				temppqip = true;
-		}
-	} else
-		pip = NULL;
-	if (uip) {
-		out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
-		out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
-		out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
-		if (tempuqip)
-			IRELE(uip);
-	}
-
-	if (gip) {
-		out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
-		out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
-		out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
-		if (tempgqip)
-			IRELE(gip);
-	}
-	if (pip) {
-		out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
-		out->qs_gquota.qfs_nblks = pip->i_d.di_nblocks;
-		out->qs_gquota.qfs_nextents = pip->i_d.di_nextents;
-		if (temppqip)
-			IRELE(pip);
-	}
-	out->qs_incoredqs = q->qi_dquots;
-	out->qs_btimelimit = q->qi_btimelimit;
-	out->qs_itimelimit = q->qi_itimelimit;
-	out->qs_rtbtimelimit = q->qi_rtbtimelimit;
-	out->qs_bwarnlimit = q->qi_bwarnlimit;
-	out->qs_iwarnlimit = q->qi_iwarnlimit;
-
-	return 0;
-}
-
-/*
- * Return quota status information, such as uquota-off, enforcements, etc.
- * for Q_XGETQSTATV command, to support separate project quota field.
- */
-int
-xfs_qm_scall_getqstatv(
-	struct xfs_mount	*mp,
-	struct fs_quota_statv	*out)
-{
-	struct xfs_quotainfo	*q = mp->m_quotainfo;
-	struct xfs_inode	*uip = NULL;
-	struct xfs_inode	*gip = NULL;
-	struct xfs_inode	*pip = NULL;
-	bool                    tempuqip = false;
-	bool                    tempgqip = false;
-	bool                    temppqip = false;
-
-	out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
-							(XFS_ALL_QUOTA_ACCT|
-							 XFS_ALL_QUOTA_ENFD));
-	out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
-	out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
-	out->qs_pquota.qfs_ino = mp->m_sb.sb_pquotino;
-
-	uip = q->qi_uquotaip;
-	gip = q->qi_gquotaip;
-	pip = q->qi_pquotaip;
-	if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
-					0, 0, &uip) == 0)
-			tempuqip = true;
-	}
-	if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
-					0, 0, &gip) == 0)
-			tempgqip = true;
-	}
-	if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
-					0, 0, &pip) == 0)
-			temppqip = true;
-	}
-	if (uip) {
-		out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
-		out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
-		if (tempuqip)
-			IRELE(uip);
-	}
-
-	if (gip) {
-		out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
-		out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
-		if (tempgqip)
-			IRELE(gip);
-	}
-	if (pip) {
-		out->qs_pquota.qfs_nblks = pip->i_d.di_nblocks;
-		out->qs_pquota.qfs_nextents = pip->i_d.di_nextents;
-		if (temppqip)
-			IRELE(pip);
-	}
-	out->qs_incoredqs = q->qi_dquots;
-	out->qs_btimelimit = q->qi_btimelimit;
-	out->qs_itimelimit = q->qi_itimelimit;
-	out->qs_rtbtimelimit = q->qi_rtbtimelimit;
-	out->qs_bwarnlimit = q->qi_bwarnlimit;
-	out->qs_iwarnlimit = q->qi_iwarnlimit;
-
-	return 0;
-}
-
 #define XFS_QC_MASK \
 	(QC_LIMIT_MASK | QC_TIMER_MASK | QC_WARNS_MASK)
 
@@ -873,28 +719,6 @@ out_put:
 	return error;
 }
 
-STATIC uint
-xfs_qm_export_flags(
-	uint flags)
-{
-	uint uflags;
-
-	uflags = 0;
-	if (flags & XFS_UQUOTA_ACCT)
-		uflags |= FS_QUOTA_UDQ_ACCT;
-	if (flags & XFS_GQUOTA_ACCT)
-		uflags |= FS_QUOTA_GDQ_ACCT;
-	if (flags & XFS_PQUOTA_ACCT)
-		uflags |= FS_QUOTA_PDQ_ACCT;
-	if (flags & XFS_UQUOTA_ENFD)
-		uflags |= FS_QUOTA_UDQ_ENFD;
-	if (flags & XFS_GQUOTA_ENFD)
-		uflags |= FS_QUOTA_GDQ_ENFD;
-	if (flags & XFS_PQUOTA_ENFD)
-		uflags |= FS_QUOTA_PDQ_ENFD;
-	return uflags;
-}
-
 
 STATIC int
 xfs_dqrele_inode(
diff --git a/fs/xfs/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c
index 6923905ab33d..5775acb0589b 100644
--- a/fs/xfs/xfs_quotaops.c
+++ b/fs/xfs/xfs_quotaops.c
@@ -23,45 +23,92 @@
 #include "xfs_inode.h"
 #include "xfs_quota.h"
 #include "xfs_trans.h"
+#include "xfs_trace.h"
+#include "xfs_icache.h"
 #include "xfs_qm.h"
 #include <linux/quota.h>
 
 
-STATIC int
-xfs_quota_type(int type)
+static void
+xfs_qm_fill_state(
+	struct qc_type_state	*tstate,
+	struct xfs_mount	*mp,
+	struct xfs_inode	*ip,
+	xfs_ino_t		ino)
 {
-	switch (type) {
-	case USRQUOTA:
-		return XFS_DQ_USER;
-	case GRPQUOTA:
-		return XFS_DQ_GROUP;
-	default:
-		return XFS_DQ_PROJ;
+	struct xfs_quotainfo *q = mp->m_quotainfo;
+	bool tempqip = false;
+
+	tstate->ino = ino;
+	if (!ip && ino == NULLFSINO)
+		return;
+	if (!ip) {
+		if (xfs_iget(mp, NULL, ino, 0, 0, &ip))
+			return;
+		tempqip = true;
 	}
+	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_warnlimit = q->qi_bwarnlimit;
+	tstate->ino_warnlimit = q->qi_iwarnlimit;
+	tstate->rt_spc_warnlimit = q->qi_rtbwarnlimit;
+	if (tempqip)
+		IRELE(ip);
 }
 
-STATIC int
-xfs_fs_get_xstate(
+/*
+ * Return quota status information, such as enforcements, quota file inode
+ * numbers etc.
+ */
+static int
+xfs_fs_get_quota_state(
 	struct super_block	*sb,
-	struct fs_quota_stat	*fqs)
+	struct qc_state		*state)
 {
-	struct xfs_mount	*mp = XFS_M(sb);
+	struct xfs_mount *mp = XFS_M(sb);
+	struct xfs_quotainfo *q = mp->m_quotainfo;
 
+	memset(state, 0, sizeof(*state));
 	if (!XFS_IS_QUOTA_RUNNING(mp))
-		return -ENOSYS;
-	return xfs_qm_scall_getqstat(mp, fqs);
+		return 0;
+	state->s_incoredqs = q->qi_dquots;
+	if (XFS_IS_UQUOTA_RUNNING(mp))
+		state->s_state[USRQUOTA].flags |= QCI_ACCT_ENABLED;
+	if (XFS_IS_UQUOTA_ENFORCED(mp))
+		state->s_state[USRQUOTA].flags |= QCI_LIMITS_ENFORCED;
+	if (XFS_IS_GQUOTA_RUNNING(mp))
+		state->s_state[GRPQUOTA].flags |= QCI_ACCT_ENABLED;
+	if (XFS_IS_GQUOTA_ENFORCED(mp))
+		state->s_state[GRPQUOTA].flags |= QCI_LIMITS_ENFORCED;
+	if (XFS_IS_PQUOTA_RUNNING(mp))
+		state->s_state[PRJQUOTA].flags |= QCI_ACCT_ENABLED;
+	if (XFS_IS_PQUOTA_ENFORCED(mp))
+		state->s_state[PRJQUOTA].flags |= QCI_LIMITS_ENFORCED;
+
+	xfs_qm_fill_state(&state->s_state[USRQUOTA], mp, q->qi_uquotaip,
+			  mp->m_sb.sb_uquotino);
+	xfs_qm_fill_state(&state->s_state[GRPQUOTA], mp, q->qi_gquotaip,
+			  mp->m_sb.sb_gquotino);
+	xfs_qm_fill_state(&state->s_state[PRJQUOTA], mp, q->qi_pquotaip,
+			  mp->m_sb.sb_pquotino);
+	return 0;
 }
 
 STATIC int
-xfs_fs_get_xstatev(
-	struct super_block	*sb,
-	struct fs_quota_statv	*fqs)
+xfs_quota_type(int type)
 {
-	struct xfs_mount	*mp = XFS_M(sb);
-
-	if (!XFS_IS_QUOTA_RUNNING(mp))
-		return -ENOSYS;
-	return xfs_qm_scall_getqstatv(mp, fqs);
+	switch (type) {
+	case USRQUOTA:
+		return XFS_DQ_USER;
+	case GRPQUOTA:
+		return XFS_DQ_GROUP;
+	default:
+		return XFS_DQ_PROJ;
+	}
 }
 
 static unsigned int
@@ -178,8 +225,7 @@ xfs_fs_set_dqblk(
 }
 
 const struct quotactl_ops xfs_quotactl_operations = {
-	.get_xstatev		= xfs_fs_get_xstatev,
-	.get_xstate		= xfs_fs_get_xstate,
+	.get_state		= xfs_fs_get_quota_state,
 	.quota_enable		= xfs_quota_enable,
 	.quota_disable		= xfs_quota_disable,
 	.rm_xquota		= xfs_fs_rm_xquota,
-- 
2.1.4