The patch titled
Subject: maple_tree: move mas_wr_end_piv() below mas_wr_extend_null()
has been added to the -mm mm-unstable branch. Its filename is
maple_tree-move-mas_wr_end_piv-below-mas_wr_extend_null.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/maple_tree-move-mas_wr_end_piv-below-mas_wr_extend_null.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>
Subject: maple_tree: move mas_wr_end_piv() below mas_wr_extend_null()
Date: Mon, 24 Jul 2023 14:31:53 -0400
Relocate it and call mas_wr_extend_null() from within mas_wr_end_piv().
Extending the NULL may affect the end pivot value so call
mas_wr_endtend_null() from within mas_wr_end_piv() to keep it all
together.
Link: https://lkml.kernel.org/r/20230724183157.3939892-12-Liam.Howlett@xxxxxxxxxx
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: Peng Zhang <zhangpeng.00@xxxxxxxxxxxxx>
Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/maple_tree.c | 31 +++++++++++++++----------------
1 file changed, 15 insertions(+), 16 deletions(-)
--- a/lib/maple_tree.c~maple_tree-move-mas_wr_end_piv-below-mas_wr_extend_null
+++ a/lib/maple_tree.c
@@ -4180,18 +4180,6 @@ static inline bool mas_wr_slot_store(str
return true;
}
-static inline void mas_wr_end_piv(struct ma_wr_state *wr_mas)
-{
- while ((wr_mas->offset_end < wr_mas->node_end) &&
- (wr_mas->mas->last > wr_mas->pivots[wr_mas->offset_end]))
- wr_mas->offset_end++;
-
- if (wr_mas->offset_end < wr_mas->node_end)
- wr_mas->end_piv = wr_mas->pivots[wr_mas->offset_end];
- else
- wr_mas->end_piv = wr_mas->mas->max;
-}
-
static inline void mas_wr_extend_null(struct ma_wr_state *wr_mas)
{
struct ma_state *mas = wr_mas->mas;
@@ -4228,6 +4216,21 @@ static inline void mas_wr_extend_null(st
}
}
+static inline void mas_wr_end_piv(struct ma_wr_state *wr_mas)
+{
+ while ((wr_mas->offset_end < wr_mas->node_end) &&
+ (wr_mas->mas->last > wr_mas->pivots[wr_mas->offset_end]))
+ wr_mas->offset_end++;
+
+ if (wr_mas->offset_end < wr_mas->node_end)
+ wr_mas->end_piv = wr_mas->pivots[wr_mas->offset_end];
+ else
+ wr_mas->end_piv = wr_mas->mas->max;
+
+ if (!wr_mas->entry)
+ mas_wr_extend_null(wr_mas);
+}
+
static inline unsigned char mas_wr_new_end(struct ma_wr_state *wr_mas)
{
struct ma_state *mas = wr_mas->mas;
@@ -4371,10 +4374,6 @@ static inline void *mas_wr_store_entry(s
/* At this point, we are at the leaf node that needs to be altered. */
mas_wr_end_piv(wr_mas);
-
- if (!wr_mas->entry)
- mas_wr_extend_null(wr_mas);
-
/* New root for a single pointer */
if (unlikely(!mas->index && mas->last == ULONG_MAX)) {
mas_new_root(mas, wr_mas->entry);
_
Patches currently in -mm which might be from Liam.Howlett@xxxxxxxxxx are
mm-mmap-clean-up-validate_mm-calls.patch
maple_tree-relax-lockdep-checks-for-on-stack-trees.patch
mm-mmap-change-detached-vma-locking-scheme.patch
maple_tree-be-more-strict-about-locking.patch
maple_tree-add-benchmarking-for-mas_for_each.patch
maple_tree-add-benchmarking-for-mas_prev.patch
mm-change-do_vmi_align_munmap-tracking-of-vmas-to-remove.patch
mm-remove-prev-check-from-do_vmi_align_munmap.patch
maple_tree-introduce-__mas_set_range.patch
mm-remove-re-walk-from-mmap_region.patch
maple_tree-re-introduce-entry-to-mas_preallocate-arguments.patch
maple_tree-adjust-node-allocation-on-mas_rebalance.patch
mm-use-vma_iter_clear_gfp-in-nommu.patch
mm-set-up-vma-iterator-for-vma_iter_prealloc-calls.patch
maple_tree-move-mas_wr_end_piv-below-mas_wr_extend_null.patch
maple_tree-update-mas_preallocate-testing.patch
maple_tree-refine-mas_preallocate-node-calculations.patch
maple_tree-reduce-resets-during-store-setup.patch
mm-mmap-change-vma-iteration-order-in-do_vmi_align_munmap.patch
