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maple_tree: root node could be handled by !p_slot too

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For a root node, mte_parent_slot() return 0, this exactly fits the
following !p_slot check.

So we can remove the special handling for root node.

Link: https://lkml.kernel.org/r/20240913063128.27391-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Wei Yang 2024-09-13 06:31:28 +00:00 committed by Andrew Morton
parent 0f85eb3395
commit 0cc8d68abe
1 changed files with 1 additions and 3 deletions
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4
lib/maple_tree.c
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@ -2155,9 +2155,7 @@ static inline bool mas_prev_sibling(struct ma_state *mas)
{
unsigned int p_slot = mte_parent_slot(mas->node);
if (mte_is_root(mas->node))
return false;
/* For root node, p_slot is set to 0 by mte_parent_slot(). */
if (!p_slot)
return false;