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>,
"Liam R . Howlett" <Liam.Howlett@Oracle.com>,
Sidhartha Kumar <sidhartha.kumar@oracle.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Subject: [PATCH 5/7] maple_tree: the type of left subtree is already saved in bnode->type
Date: Wed, 27 Nov 2024 01:27:51 +0000 [thread overview]
Message-ID: <20241127012753.3393-6-richard.weiyang@gmail.com> (raw)
In-Reply-To: <20241127012753.3393-1-richard.weiyang@gmail.com>
mast_sufficient()/mast_overflow() are only used in
mas_spanning_rebalance(). Before doing the check, mast_ascend() has
retrieved the left subtree type and stored in bnode->type.
So we can use the type in bnode->type directly to get minimum slot
count.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
CC: Liam R. Howlett <Liam.Howlett@Oracle.com>
CC: Sidhartha Kumar <sidhartha.kumar@oracle.com>
CC: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
---
lib/maple_tree.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 6cabee1371ec..56e9857ce681 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -2729,7 +2729,7 @@ static inline void mast_combine_cp_right(struct maple_subtree_state *mast)
*/
static inline bool mast_sufficient(struct maple_subtree_state *mast)
{
- if (mast->bn->b_end > mt_min_slot_count(mast->orig_l->node))
+ if (mast->bn->b_end > mt_min_slots[mast->bn->type])
return true;
return false;
@@ -2742,7 +2742,7 @@ static inline bool mast_sufficient(struct maple_subtree_state *mast)
*/
static inline bool mast_overflow(struct maple_subtree_state *mast)
{
- if (mast->bn->b_end >= mt_slot_count(mast->orig_l->node))
+ if (mast->bn->b_end >= mt_slots[mast->bn->type])
return true;
return false;
--
2.34.1
next prev parent reply other threads:[~2024-11-27 1:28 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-27 1:27 [PATCH 0/7] spanning write related cleanup Wei Yang
2024-11-27 1:27 ` [PATCH 1/7] maple_tree: not necessary to check ahead if !content Wei Yang
2024-11-27 1:27 ` [PATCH 2/7] maple_tree: validate we won't split on NULL Wei Yang
2024-11-27 1:27 ` [PATCH 3/7] maple_tree: check mid_split only may have Wei Yang
2024-11-27 1:27 ` [PATCH 4/7] maple_tree: the return value of mast_spanning_rebalance() is not used Wei Yang
2024-11-27 1:27 ` Wei Yang [this message]
2024-11-27 1:27 ` [PATCH 6/7] maple_tree: always need to update max of new left node Wei Yang
2024-11-27 1:27 ` [PATCH 7/7] maple_tree: only ascend left subtree to get the old node for replacement Wei Yang
2024-11-27 13:31 ` [PATCH 0/7] spanning write related cleanup Liam R. Howlett
2024-11-28 1:11 ` Wei Yang
2025-01-17 5:49 ` Wei Yang
2025-01-23 17:52 ` Liam R. Howlett
2025-01-24 1:43 ` Wei Yang
2025-01-27 14:36 ` Liam R. Howlett
2025-01-28 1:36 ` Wei Yang
2025-01-28 2:11 ` Wei Yang
2025-01-31 16:46 ` Wei Yang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20241127012753.3393-6-richard.weiyang@gmail.com \
--to=richard.weiyang@gmail.com \
--cc=Liam.Howlett@oracle.com \
--cc=akpm@linux-foundation.org \
--cc=linux-mm@kvack.org \
--cc=lorenzo.stoakes@oracle.com \
--cc=maple-tree@lists.infradead.org \
--cc=sidhartha.kumar@oracle.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox