The patch titled
Subject: maple_tree: print empty for an empty tree on mt_dump()
has been added to the -mm mm-unstable branch. Its filename is
maple_tree-print-empty-for-an-empty-tree-on-mt_dump.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/maple_tree-print-empty-for-an-empty-tree-on-mt_dump.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: Wei Yang <richard.weiyang@xxxxxxxxx>
Subject: maple_tree: print empty for an empty tree on mt_dump()
Date: Thu, 31 Oct 2024 23:16:23 +0000
Patch series "refine storing null", v5.
When overwriting the whole range with NULL, current behavior is not
correct.
This patch (of 5):
Currently for an empty tree, it would print:
maple_tree(0x7ffcd02c6ee0) flags 1, height 0 root (nil)
0: (nil)
This is a little misleading.
Let's print (empty) for an empty tree.
Link: https://lkml.kernel.org/r/20241031231627.14316-1-richard.weiyang@xxxxxxxxx
Link: https://lkml.kernel.org/r/20241031231627.14316-2-richard.weiyang@xxxxxxxxx
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
Reviewed-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
Cc: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/maple_tree.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/lib/maple_tree.c~maple_tree-print-empty-for-an-empty-tree-on-mt_dump
+++ a/lib/maple_tree.c
@@ -7273,10 +7273,12 @@ void mt_dump(const struct maple_tree *mt
pr_info("maple_tree(" PTR_FMT ") flags %X, height %u root " PTR_FMT "\n",
mt, mt->ma_flags, mt_height(mt), entry);
- if (!xa_is_node(entry))
- mt_dump_entry(entry, 0, 0, 0, format);
- else if (entry)
+ if (xa_is_node(entry))
mt_dump_node(mt, entry, 0, mt_node_max(entry), 0, format);
+ else if (entry)
+ mt_dump_entry(entry, 0, 0, 0, format);
+ else
+ pr_info("(empty)\n");
}
EXPORT_SYMBOL_GPL(mt_dump);
_
Patches currently in -mm which might be from richard.weiyang@xxxxxxxxx are
mm-mlock-set-the-correct-prev-on-failure.patch
maple_tree-i-is-always-less-than-or-equal-to-mas_end.patch
maple_tree-goto-complete-directly-on-a-pivot-of-0.patch
maple_tree-remove-maple_big_nodeparent.patch
maple_tree-memset-maple_big_node-as-a-whole.patch
maple_tree-root-node-could-be-handled-by-p_slot-too.patch
maple_tree-clear-request_count-for-new-allocated-one.patch
maple_tree-total-is-not-changed-for-nomem_one-case.patch
maple_tree-simplify-mas_push_node.patch
maple_tree-calculate-new_end-when-needed.patch
maple_tree-remove-sanity-check-from-mas_wr_slot_store.patch
mm-vma-the-pgoff-is-correct-if-can_merge_right.patch
maple_tree-print-empty-for-an-empty-tree-on-mt_dump.patch
maple_tree-the-return-value-of-mas_root_expand-is-not-used.patch
maple_tree-not-necessary-to-check-index-last-again.patch
maple_tree-refine-mas_store_root-on-storing-null.patch
maple_tree-add-a-test-checking-storing-null.patch
