From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A366E21E3D9 for ; Tue, 15 Oct 2024 23:57:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729036677; cv=none; b=op4TWfFAW47WvhIr1RjkrYQ9nEoBSeQyJhDWX8s5S5tNvkVb4oME4B5wNOIRBQ9mb3qGAiy9oaa7Yhq7Vbn9vrpEIXUQfEWCfCeBjD15rNKgZDQjCmlWEBPM7qo1+eeozsn/uUB2FG7P64N90eZwcgC3+6f6zqNflyYPpID0eo0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729036677; c=relaxed/simple; bh=/fQvRKIk3ZOzO6NYWh5R7lEPIMuzwvu1fNqw35ehs5o=; h=Date:To:From:Subject:Message-Id; b=ukUromotl/9oQYVCrGIQUBvCNkXSSlm0KvfPYMgW9CjjxFu32kmSdERPOUXlZLUzBmOZfAZpnTa5lZDPpVOXa6Muh4x/TB1Ja5OO1693K1rCyZtMu9o+I5jJ/mCHRcHysttTUo8jbgAuHN7JHYYm1Yt1+WfxeOgzYUSLmbI2ILA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=ZUrpm02p; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="ZUrpm02p" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3F01DC4CEC6; Tue, 15 Oct 2024 23:57:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1729036677; bh=/fQvRKIk3ZOzO6NYWh5R7lEPIMuzwvu1fNqw35ehs5o=; h=Date:To:From:Subject:From; b=ZUrpm02pY1H6ueKWq+3B2uvnlTC+NTj9ym0Y7f7kd+bxwKry518UGDY0ouD7CcFT4 5X7/WQUIyS3NKaYS7UBCI0gnm5QabqzEq+kSlCR31KjmSMG7WIzhsM41NxCLtY5QGS K1YZ3k+vJlMzKPcgGuYI18gNw1IFVldoSFe417MM= Date: Tue, 15 Oct 2024 16:57:56 -0700 To: mm-commits@vger.kernel.org,sidhartha.kumar@oracle.com,lorenzo.stoakes@oracle.com,Liam.Howlett@Oracle.com,richard.weiyang@gmail.com,akpm@linux-foundation.org From: Andrew Morton Subject: + maple_tree-not-necessary-to-check-index-last-again.patch added to mm-unstable branch Message-Id: <20241015235757.3F01DC4CEC6@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: maple_tree: not necessary to check index/last again has been added to the -mm mm-unstable branch. Its filename is maple_tree-not-necessary-to-check-index-last-again.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/maple_tree-not-necessary-to-check-index-last-again.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Wei Yang Subject: maple_tree: not necessary to check index/last again Date: Tue, 15 Oct 2024 23:39:08 +0000 Patch series "fix mas_new_root()". When overwriting the whole range with NULL, current behavior is not correct. This patch (of 2): Before calling mas_new_root(), the range has been checked. Link: https://lkml.kernel.org/r/20241015233909.23592-1-richard.weiyang@gmail.com Link: https://lkml.kernel.org/r/20241015233909.23592-2-richard.weiyang@gmail.com Signed-off-by: Wei Yang Cc: Liam R. Howlett Cc: Sidhartha Kumar Cc: Lorenzo Stoakes Signed-off-by: Andrew Morton --- lib/maple_tree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/lib/maple_tree.c~maple_tree-not-necessary-to-check-index-last-again +++ a/lib/maple_tree.c @@ -3670,7 +3670,7 @@ static inline void mas_new_root(struct m void __rcu **slots; unsigned long *pivots; - if (!entry && !mas->index && mas->last == ULONG_MAX) { + if (!entry) { mas->depth = 0; mas_set_height(mas); rcu_assign_pointer(mas->tree->ma_root, entry); _ Patches currently in -mm which might be from richard.weiyang@gmail.com are maple_tree-i-is-always-less-than-or-equal-to-mas_end.patch maple_tree-goto-complete-directly-on-a-pivot-of-0.patch maple_tree-remove-maple_big_nodeparent.patch maple_tree-memset-maple_big_node-as-a-whole.patch maple_tree-root-node-could-be-handled-by-p_slot-too.patch maple_tree-clear-request_count-for-new-allocated-one.patch maple_tree-total-is-not-changed-for-nomem_one-case.patch maple_tree-simplify-mas_push_node.patch maple_tree-not-necessary-to-check-index-last-again.patch maple_tree-one-single-entry-couldnt-represent-the-whole-range.patch