[merged mm-stable] maple_tree-add-gap-support-slot-and-pivot-sizes-for-maple-copy.patch removed from -mm tree

[merged mm-stable] maple_tree-add-gap-support-slot-and-pivot-sizes-for-maple-copy.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: maple_tree: add gap support, slot and pivot sizes for maple copy
has been removed from the -mm tree.  Its filename was
     maple_tree-add-gap-support-slot-and-pivot-sizes-for-maple-copy.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Subject: maple_tree: add gap support, slot and pivot sizes for maple copy
Date: Fri, 30 Jan 2026 15:59:21 -0500

Add plumbing work for using maple copy as a normal node for a source of
copy operations.  This is needed later.

Link: https://lkml.kernel.org/r/20260130205935.2559335-17-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Andrew Ballance <andrewjballance@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christian Kujau <lists@nerdbynature.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: SeongJae Park <sj@kernel.org>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/maple_tree.h |    1 +
 lib/maple_tree.c           |    5 +++++
 2 files changed, 6 insertions(+)

--- a/include/linux/maple_tree.h~maple_tree-add-gap-support-slot-and-pivot-sizes-for-maple-copy
+++ a/include/linux/maple_tree.h
@@ -165,6 +165,7 @@ struct maple_copy {
 	} src[4];
 	/* Simulated node */
 	void __rcu *slot[3];
+	unsigned long gap[3];
 	unsigned long min;
 	union {
 		unsigned long pivot[3];
--- a/lib/maple_tree.c~maple_tree-add-gap-support-slot-and-pivot-sizes-for-maple-copy
+++ a/lib/maple_tree.c
@@ -101,6 +101,7 @@ static const unsigned long mt_max[] = {
 	[maple_leaf_64]		= ULONG_MAX,
 	[maple_range_64]	= ULONG_MAX,
 	[maple_arange_64]	= ULONG_MAX,
+	[maple_copy]		= ULONG_MAX,
 };
 #define mt_node_max(x) mt_max[mte_node_type(x)]
 #endif
@@ -110,6 +111,7 @@ static const unsigned char mt_slots[] =
 	[maple_leaf_64]		= MAPLE_RANGE64_SLOTS,
 	[maple_range_64]	= MAPLE_RANGE64_SLOTS,
 	[maple_arange_64]	= MAPLE_ARANGE64_SLOTS,
+	[maple_copy]		= 3,
 };
 #define mt_slot_count(x) mt_slots[mte_node_type(x)]
 
@@ -118,6 +120,7 @@ static const unsigned char mt_pivots[] =
 	[maple_leaf_64]		= MAPLE_RANGE64_SLOTS - 1,
 	[maple_range_64]	= MAPLE_RANGE64_SLOTS - 1,
 	[maple_arange_64]	= MAPLE_ARANGE64_SLOTS - 1,
+	[maple_copy]		= 3,
 };
 #define mt_pivot_count(x) mt_pivots[mte_node_type(x)]
 
@@ -126,6 +129,7 @@ static const unsigned char mt_min_slots[
 	[maple_leaf_64]		= (MAPLE_RANGE64_SLOTS / 2) - 2,
 	[maple_range_64]	= (MAPLE_RANGE64_SLOTS / 2) - 2,
 	[maple_arange_64]	= (MAPLE_ARANGE64_SLOTS / 2) - 1,
+	[maple_copy]		= 1, /* Should never be used */
 };
 #define mt_min_slot_count(x) mt_min_slots[mte_node_type(x)]
 
@@ -627,6 +631,7 @@ static inline unsigned long *ma_gaps(str
 	case maple_arange_64:
 		return node->ma64.gap;
 	case maple_copy:
+		return node->cp.gap;
 	case maple_range_64:
 	case maple_leaf_64:
 	case maple_dense:
_

Patches currently in -mm which might be from Liam.Howlett@oracle.com are