[PATCH 4/5] xfs: move xfs_bmap_defer_add to xfs_bmap_item.c

["Darrick J. Wong" <djwong@xxxxxxxxxx>]

From: Darrick J. Wong <djwong@xxxxxxxxxx>

Move the code that adds the incore xfs_bmap_item deferred work data to a
transaction live with the BUI log item code.  This means that the file
mapping code no longer has to know about the inner workings of the BUI
log items.

As a consequence, we can hide the _get_group helper.

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
 libxfs/Makefile     |    1 +
 libxfs/defer_item.c |   15 ++++++++++++++-
 libxfs/defer_item.h |   13 +++++++++++++
 libxfs/xfs_bmap.c   |    6 ++----
 libxfs/xfs_bmap.h   |    3 ---
 5 files changed, 30 insertions(+), 8 deletions(-)
 create mode 100644 libxfs/defer_item.h


diff --git a/libxfs/Makefile b/libxfs/Makefile
index 8e6b2dfdfe1..e1248c2b3ca 100644
--- a/libxfs/Makefile
+++ b/libxfs/Makefile
@@ -20,6 +20,7 @@ PKGHFILES = xfs_fs.h \
 	xfs_log_format.h
 
 HFILES = \
+	defer_item.h \
 	libxfs_io.h \
 	libxfs_api_defs.h \
 	init.h \
diff --git a/libxfs/defer_item.c b/libxfs/defer_item.c
index 78de8491bb5..c9502d30860 100644
--- a/libxfs/defer_item.c
+++ b/libxfs/defer_item.c
@@ -24,6 +24,7 @@
 #include "xfs_da_btree.h"
 #include "xfs_attr.h"
 #include "libxfs.h"
+#include "defer_item.h"
 
 /* Dummy defer item ops, since we don't do logging. */
 
@@ -482,7 +483,7 @@ xfs_bmap_update_create_done(
 }
 
 /* Take an active ref to the AG containing the space we're mapping. */
-void
+static inline void
 xfs_bmap_update_get_group(
 	struct xfs_mount	*mp,
 	struct xfs_bmap_intent	*bi)
@@ -501,6 +502,18 @@ xfs_bmap_update_get_group(
 	bi->bi_pag = xfs_perag_intent_get(mp, agno);
 }
 
+/* Add this deferred BUI to the transaction. */
+void
+xfs_bmap_defer_add(
+	struct xfs_trans	*tp,
+	struct xfs_bmap_intent	*bi)
+{
+	trace_xfs_bmap_defer(bi);
+
+	xfs_bmap_update_get_group(tp->t_mountp, bi);
+	xfs_defer_add(tp, &bi->bi_list, &xfs_bmap_update_defer_type);
+}
+
 /* Release an active AG ref after finishing mapping work. */
 static inline void
 xfs_bmap_update_put_group(
diff --git a/libxfs/defer_item.h b/libxfs/defer_item.h
new file mode 100644
index 00000000000..6d3abf1589c
--- /dev/null
+++ b/libxfs/defer_item.h
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2023-2024 Oracle.  All Rights Reserved.
+ * Author: Darrick J. Wong <djwong@xxxxxxxxxx>
+ */
+#ifndef	__LIBXFS_DEFER_ITEM_H_
+#define	__LIBXFS_DEFER_ITEM_H_
+
+struct xfs_bmap_intent;
+
+void xfs_bmap_defer_add(struct xfs_trans *tp, struct xfs_bmap_intent *bi);
+
+#endif /* __LIBXFS_DEFER_ITEM_H_ */
diff --git a/libxfs/xfs_bmap.c b/libxfs/xfs_bmap.c
index 6b0d6d2e635..69ed4150c5e 100644
--- a/libxfs/xfs_bmap.c
+++ b/libxfs/xfs_bmap.c
@@ -31,6 +31,7 @@
 #include "xfs_refcount.h"
 #include "xfs_rtbitmap.h"
 #include "xfs_health.h"
+#include "defer_item.h"
 
 struct kmem_cache		*xfs_bmap_intent_cache;
 
@@ -6170,10 +6171,7 @@ __xfs_bmap_add(
 	bi->bi_whichfork = whichfork;
 	bi->bi_bmap = *bmap;
 
-	trace_xfs_bmap_defer(bi);
-
-	xfs_bmap_update_get_group(tp->t_mountp, bi);
-	xfs_defer_add(tp, &bi->bi_list, &xfs_bmap_update_defer_type);
+	xfs_bmap_defer_add(tp, bi);
 	return 0;
 }
 
diff --git a/libxfs/xfs_bmap.h b/libxfs/xfs_bmap.h
index b477f92c850..a5e37ef7b75 100644
--- a/libxfs/xfs_bmap.h
+++ b/libxfs/xfs_bmap.h
@@ -243,9 +243,6 @@ struct xfs_bmap_intent {
 	struct xfs_bmbt_irec			bi_bmap;
 };
 
-void xfs_bmap_update_get_group(struct xfs_mount *mp,
-		struct xfs_bmap_intent *bi);
-
 int	xfs_bmap_finish_one(struct xfs_trans *tp, struct xfs_bmap_intent *bi);
 void	xfs_bmap_map_extent(struct xfs_trans *tp, struct xfs_inode *ip,
 		struct xfs_bmbt_irec *imap);