v4.19.13 snapshot.
diff --git a/fs/xfs/xfs_trans_inode.c b/fs/xfs/xfs_trans_inode.c
new file mode 100644
index 0000000..5429273
--- /dev/null
+++ b/fs/xfs/xfs_trans_inode.c
@@ -0,0 +1,155 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2000,2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ */
+#include "xfs.h"
+#include "xfs_fs.h"
+#include "xfs_shared.h"
+#include "xfs_format.h"
+#include "xfs_log_format.h"
+#include "xfs_trans_resv.h"
+#include "xfs_mount.h"
+#include "xfs_inode.h"
+#include "xfs_trans.h"
+#include "xfs_trans_priv.h"
+#include "xfs_inode_item.h"
+#include "xfs_trace.h"
+
+#include <linux/iversion.h>
+
+/*
+ * Add a locked inode to the transaction.
+ *
+ * The inode must be locked, and it cannot be associated with any transaction.
+ * If lock_flags is non-zero the inode will be unlocked on transaction commit.
+ */
+void
+xfs_trans_ijoin(
+ struct xfs_trans *tp,
+ struct xfs_inode *ip,
+ uint lock_flags)
+{
+ xfs_inode_log_item_t *iip;
+
+ ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
+ if (ip->i_itemp == NULL)
+ xfs_inode_item_init(ip, ip->i_mount);
+ iip = ip->i_itemp;
+
+ ASSERT(iip->ili_lock_flags == 0);
+ iip->ili_lock_flags = lock_flags;
+
+ /*
+ * Get a log_item_desc to point at the new item.
+ */
+ xfs_trans_add_item(tp, &iip->ili_item);
+}
+
+/*
+ * Transactional inode timestamp update. Requires the inode to be locked and
+ * joined to the transaction supplied. Relies on the transaction subsystem to
+ * track dirty state and update/writeback the inode accordingly.
+ */
+void
+xfs_trans_ichgtime(
+ struct xfs_trans *tp,
+ struct xfs_inode *ip,
+ int flags)
+{
+ struct inode *inode = VFS_I(ip);
+ struct timespec64 tv;
+
+ ASSERT(tp);
+ ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
+
+ tv = current_time(inode);
+
+ if (flags & XFS_ICHGTIME_MOD)
+ inode->i_mtime = tv;
+ if (flags & XFS_ICHGTIME_CHG)
+ inode->i_ctime = tv;
+}
+
+/*
+ * This is called to mark the fields indicated in fieldmask as needing
+ * to be logged when the transaction is committed. The inode must
+ * already be associated with the given transaction.
+ *
+ * The values for fieldmask are defined in xfs_inode_item.h. We always
+ * log all of the core inode if any of it has changed, and we always log
+ * all of the inline data/extents/b-tree root if any of them has changed.
+ */
+void
+xfs_trans_log_inode(
+ xfs_trans_t *tp,
+ xfs_inode_t *ip,
+ uint flags)
+{
+ struct inode *inode = VFS_I(ip);
+
+ ASSERT(ip->i_itemp != NULL);
+ ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
+
+ /*
+ * Don't bother with i_lock for the I_DIRTY_TIME check here, as races
+ * don't matter - we either will need an extra transaction in 24 hours
+ * to log the timestamps, or will clear already cleared fields in the
+ * worst case.
+ */
+ if (inode->i_state & (I_DIRTY_TIME | I_DIRTY_TIME_EXPIRED)) {
+ spin_lock(&inode->i_lock);
+ inode->i_state &= ~(I_DIRTY_TIME | I_DIRTY_TIME_EXPIRED);
+ spin_unlock(&inode->i_lock);
+ }
+
+ /*
+ * Record the specific change for fdatasync optimisation. This
+ * allows fdatasync to skip log forces for inodes that are only
+ * timestamp dirty. We do this before the change count so that
+ * the core being logged in this case does not impact on fdatasync
+ * behaviour.
+ */
+ ip->i_itemp->ili_fsync_fields |= flags;
+
+ /*
+ * First time we log the inode in a transaction, bump the inode change
+ * counter if it is configured for this to occur. While we have the
+ * inode locked exclusively for metadata modification, we can usually
+ * avoid setting XFS_ILOG_CORE if no one has queried the value since
+ * the last time it was incremented. If we have XFS_ILOG_CORE already
+ * set however, then go ahead and bump the i_version counter
+ * unconditionally.
+ */
+ if (!test_and_set_bit(XFS_LI_DIRTY, &ip->i_itemp->ili_item.li_flags) &&
+ IS_I_VERSION(VFS_I(ip))) {
+ if (inode_maybe_inc_iversion(VFS_I(ip), flags & XFS_ILOG_CORE))
+ flags |= XFS_ILOG_CORE;
+ }
+
+ tp->t_flags |= XFS_TRANS_DIRTY;
+
+ /*
+ * Always OR in the bits from the ili_last_fields field.
+ * This is to coordinate with the xfs_iflush() and xfs_iflush_done()
+ * routines in the eventual clearing of the ili_fields bits.
+ * See the big comment in xfs_iflush() for an explanation of
+ * this coordination mechanism.
+ */
+ flags |= ip->i_itemp->ili_last_fields;
+ ip->i_itemp->ili_fields |= flags;
+}
+
+int
+xfs_trans_roll_inode(
+ struct xfs_trans **tpp,
+ struct xfs_inode *ip)
+{
+ int error;
+
+ xfs_trans_log_inode(*tpp, ip, XFS_ILOG_CORE);
+ error = xfs_trans_roll(tpp);
+ if (!error)
+ xfs_trans_ijoin(*tpp, ip, 0);
+ return error;
+}