diff mbox series

[14/28] xfs: don't count metadata directory files to quota

Message ID 173084396260.1870066.5496086039511886577.stgit@frogsfrogsfrogs (mailing list archive)
State New
Headers show
Series [01/28] xfs: constify the xfs_sb predicates | expand

Commit Message

Darrick J. Wong Nov. 5, 2024, 10:20 p.m. UTC 
From: Darrick J. Wong <djwong@kernel.org>

Files in the metadata directory tree are internal to the filesystem.
Don't count the inodes or the blocks they use in the root dquot because
users do not need to know about their resource usage.  This will also
quiet down complaints about dquot usage not matching du output.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 fs/xfs/xfs_dquot.c       |    1 +
 fs/xfs/xfs_qm.c          |   11 +++++++++++
 fs/xfs/xfs_quota.h       |    5 +++++
 fs/xfs/xfs_trans_dquot.c |    6 ++++++
 4 files changed, 23 insertions(+)
diff mbox series

Patch

diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index c1b211c260a9d5..3bf47458c517af 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -983,6 +983,7 @@  xfs_qm_dqget_inode(
 
 	xfs_assert_ilocked(ip, XFS_ILOCK_EXCL);
 	ASSERT(xfs_inode_dquot(ip, type) == NULL);
+	ASSERT(!xfs_is_metadir_inode(ip));
 
 	id = xfs_qm_id_for_quotatype(ip, type);
 
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index d0674d84af3ec5..ec983cca9adaed 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -304,6 +304,8 @@  xfs_qm_need_dqattach(
 		return false;
 	if (xfs_is_quota_inode(&mp->m_sb, ip->i_ino))
 		return false;
+	if (xfs_is_metadir_inode(ip))
+		return false;
 	return true;
 }
 
@@ -326,6 +328,7 @@  xfs_qm_dqattach_locked(
 		return 0;
 
 	xfs_assert_ilocked(ip, XFS_ILOCK_EXCL);
+	ASSERT(!xfs_is_metadir_inode(ip));
 
 	if (XFS_IS_UQUOTA_ON(mp) && !ip->i_udquot) {
 		error = xfs_qm_dqattach_one(ip, XFS_DQTYPE_USER,
@@ -1204,6 +1207,10 @@  xfs_qm_dqusage_adjust(
 		}
 	}
 
+	/* Metadata directory files are not accounted to user-visible quotas. */
+	if (xfs_is_metadir_inode(ip))
+		goto error0;
+
 	ASSERT(ip->i_delayed_blks == 0);
 
 	if (XFS_IS_REALTIME_INODE(ip)) {
@@ -1754,6 +1761,8 @@  xfs_qm_vop_dqalloc(
 	if (!XFS_IS_QUOTA_ON(mp))
 		return 0;
 
+	ASSERT(!xfs_is_metadir_inode(ip));
+
 	lockflags = XFS_ILOCK_EXCL;
 	xfs_ilock(ip, lockflags);
 
@@ -1883,6 +1892,7 @@  xfs_qm_vop_chown(
 
 	xfs_assert_ilocked(ip, XFS_ILOCK_EXCL);
 	ASSERT(XFS_IS_QUOTA_ON(ip->i_mount));
+	ASSERT(!xfs_is_metadir_inode(ip));
 
 	/* old dquot */
 	prevdq = *IO_olddq;
@@ -1970,6 +1980,7 @@  xfs_qm_vop_create_dqattach(
 		return;
 
 	xfs_assert_ilocked(ip, XFS_ILOCK_EXCL);
+	ASSERT(!xfs_is_metadir_inode(ip));
 
 	if (udqp && XFS_IS_UQUOTA_ON(mp)) {
 		ASSERT(ip->i_udquot == NULL);
diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h
index 23d71a55bbc006..645761997bf2d9 100644
--- a/fs/xfs/xfs_quota.h
+++ b/fs/xfs/xfs_quota.h
@@ -29,6 +29,11 @@  struct xfs_buf;
 	 (XFS_IS_GQUOTA_ON(mp) && (ip)->i_gdquot == NULL) || \
 	 (XFS_IS_PQUOTA_ON(mp) && (ip)->i_pdquot == NULL))
 
+#define XFS_IS_DQDETACHED(ip) \
+	((ip)->i_udquot == NULL && \
+	 (ip)->i_gdquot == NULL && \
+	 (ip)->i_pdquot == NULL)
+
 #define XFS_QM_NEED_QUOTACHECK(mp) \
 	((XFS_IS_UQUOTA_ON(mp) && \
 		(mp->m_sb.sb_qflags & XFS_UQUOTA_CHKD) == 0) || \
diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
index b368e13424c4f4..ca7df018290e0e 100644
--- a/fs/xfs/xfs_trans_dquot.c
+++ b/fs/xfs/xfs_trans_dquot.c
@@ -156,6 +156,8 @@  xfs_trans_mod_ino_dquot(
 	unsigned int			field,
 	int64_t				delta)
 {
+	ASSERT(!xfs_is_metadir_inode(ip) || XFS_IS_DQDETACHED(ip));
+
 	xfs_trans_mod_dquot(tp, dqp, field, delta);
 
 	if (xfs_hooks_switched_on(&xfs_dqtrx_hooks_switch)) {
@@ -247,6 +249,8 @@  xfs_trans_mod_dquot_byino(
 	    xfs_is_quota_inode(&mp->m_sb, ip->i_ino))
 		return;
 
+	ASSERT(!xfs_is_metadir_inode(ip) || XFS_IS_DQDETACHED(ip));
+
 	if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot)
 		xfs_trans_mod_ino_dquot(tp, ip, ip->i_udquot, field, delta);
 	if (XFS_IS_GQUOTA_ON(mp) && ip->i_gdquot)
@@ -962,6 +966,8 @@  xfs_trans_reserve_quota_nblks(
 
 	if (!XFS_IS_QUOTA_ON(mp))
 		return 0;
+	if (xfs_is_metadir_inode(ip))
+		return 0;
 
 	ASSERT(!xfs_is_quota_inode(&mp->m_sb, ip->i_ino));
 	xfs_assert_ilocked(ip, XFS_ILOCK_EXCL);