From: Wei Yang <richard.weiyang@gmail.com>
To: akpm@linux-foundation.org, Liam.Howlett@oracle.com
Cc: maple-tree@lists.infradead.org, linux-mm@kvack.org,
Wei Yang <richard.weiyang@gmail.com>
Subject: [PATCH 1/4] maple_tree: not necessary to copy mas->end + 1
Date: Thu, 19 Sep 2024 23:48:29 +0000 [thread overview]
Message-ID: <20240919234832.24237-2-richard.weiyang@gmail.com> (raw)
In-Reply-To: <20240919234832.24237-1-richard.weiyang@gmail.com>
mas_mab_cp() copy range [mas_start, mas_end] inclusively, so we just
need to copy to mas->end which points to the last valid data in maple
node.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
---
lib/maple_tree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index a4796101decc..51f49b29b8b0 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -2099,7 +2099,7 @@ static noinline_for_kasan void mas_store_b_node(struct ma_wr_state *wr_mas,
goto b_end;
/* Copy end data to the end of the node. */
- mas_mab_cp(mas, slot, mas->end + 1, b_node, ++b_end);
+ mas_mab_cp(mas, slot, mas->end, b_node, ++b_end);
b_node->b_end--;
return;
--
2.34.1
next prev parent reply other threads:[~2024-09-20 0:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-19 23:48 [PATCH 0/4] refine mas_end of mas_mab_cp() Wei Yang
2024-09-19 23:48 ` Wei Yang [this message]
2024-09-19 23:48 ` [PATCH 2/4] maple_tree: use mt_pivot_count() to replace mt_slot_count() - 1 Wei Yang
2024-09-19 23:48 ` [PATCH 3/4] maple_tree: copy to mt_pivot_count() instead of mt_slot_count() Wei Yang
2024-09-19 23:48 ` [PATCH 4/4] maple_tree: now we are sure mas_end wouldn't exceed mt_pivots[mt] Wei Yang
2024-09-23 19:57 ` [PATCH 0/4] refine mas_end of mas_mab_cp() Liam R. Howlett
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