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 0/4] refine mas_end of mas_mab_cp()
Date: Thu, 19 Sep 2024 23:48:28 +0000 [thread overview]
Message-ID: <20240919234832.24237-1-richard.weiyang@gmail.com> (raw)
mas_mab_cp() copy range [mas_start, mas_end] inclusively. For some usage, the
mas_end passed could be refined.
Patch 1: if we know the end of a maple_node, we don't need to copy end + 1.
Patch 2: this one tries to leverage mt_pivot_count() for optimize the code.
Patch 3: the maximum end of a maple_node is mt_pivot_count() instead of
mt_slot_count()
Patch 4: after above cleanup, we are sure mas_end won't exceed mt_pivots[], so
we can remove the check in mas_mab_cp()
Wei Yang (4):
maple_tree: not necessary to copy mas->end + 1
maple_tree: use mt_pivot_count() to replace mt_slot_count() - 1
maple_tree: copy to mt_pivot_count() instead of mt_slot_count()
maple_tree: now we are sure mas_end wouldn't exceed mt_pivots[mt]
lib/maple_tree.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
--
2.34.1
next 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 Wei Yang [this message]
2024-09-19 23:48 ` [PATCH 1/4] maple_tree: not necessary to copy mas->end + 1 Wei Yang
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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