linux-mm.kvack.org archive mirror
 help / color / mirror / Atom feed
From: Wei Yang <richard.weiyang@gmail.com>
To: Liam.Howlett@oracle.com, akpm@linux-foundation.org, willy@infradead.org
Cc: maple-tree@lists.infradead.org, linux-mm@kvack.org,
	Wei Yang <richard.weiyang@gmail.com>,
	"Liam R . Howlett" <Liam.Howlett@Oracle.com>,
	stable@vger.kernel.org
Subject: [Patch v3 2/3] maple_tree: restart walk on correct status
Date: Wed, 11 Jun 2025 01:12:52 +0000	[thread overview]
Message-ID: <20250611011253.19515-3-richard.weiyang@gmail.com> (raw)
In-Reply-To: <20250611011253.19515-1-richard.weiyang@gmail.com>

Commit a8091f039c1e ("maple_tree: add MAS_UNDERFLOW and MAS_OVERFLOW
states") adds more status during maple tree walk. But it introduce a
typo on the status check during walk.

It expects to mean neither active nor start, we would restart the walk,
while current code means we would always restart the walk.

Fixes: a8091f039c1e ("maple_tree: add MAS_UNDERFLOW and MAS_OVERFLOW states")
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Cc: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.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 b0c345b6e646..7144dbbc3481 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -4930,7 +4930,7 @@ void *mas_walk(struct ma_state *mas)
 {
 	void *entry;
 
-	if (!mas_is_active(mas) || !mas_is_start(mas))
+	if (!mas_is_active(mas) && !mas_is_start(mas))
 		mas->status = ma_start;
 retry:
 	entry = mas_state_walk(mas);
-- 
2.34.1



  parent reply	other threads:[~2025-06-11  1:13 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-11  1:12 [Patch v3 0/3] maple_tree: Fix the replacement of a root leaf node Wei Yang
2025-06-11  1:12 ` [Patch v3 1/3] maple_tree: Fix mt_destroy_walk() on " Wei Yang
2025-06-11  1:12 ` Wei Yang [this message]
2025-06-11  1:12 ` [Patch v3 3/3] maple_tree: assert retrieving new value on a tree containing just a " Wei Yang
2025-06-11  1:37 ` [Patch v3 0/3] maple_tree: Fix the replacement of a root " Andrew Morton
2025-06-11  2:54   ` Wei Yang
2025-06-11  3:55     ` Andrew Morton
2025-06-11  6:15       ` 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=20250611011253.19515-3-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=maple-tree@lists.infradead.org \
    --cc=stable@vger.kernel.org \
    --cc=willy@infradead.org \
    /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;
as well as URLs for NNTP newsgroup(s).