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 7FFE73859FA for ; Tue, 12 May 2026 21:38:19 +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=1778621899; cv=none; b=e/bNwNynhk9DadIp9HH64hWN5Y7jfF36QeziPLESM6K20i7K0Zmy6f4xlzgAdueH4+oiLfqsZX7rS9yqpBL+3rLjpgKDu8g0hp5Zb61TVEuy+3cLHi0J0YCh66mTdNsFtICCBEum3PZi81lktYlV00/mwOhWb+FhmaUmnyXr5sA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778621899; c=relaxed/simple; bh=JDmtabrmtkgudonhpGTLj3QWPdOipm5R0sCRut5oLM4=; h=Date:To:From:Subject:Message-Id; b=KpR94QLAORy+GOAy6LkKwP033+ydJOkesaeIECBgsdA26Ktw3t38mO+IDFxufktVo90KeNItybk87oM4M1jS14s1IKLpnD0p3eSj0f/trVCXDHKehldqaFZXarg4O6xZkjuQTrMJR+VM9ixX1kEX6kusGyYy1gSLZ5nGVAO25s4= 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=wPXhvEzk; 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="wPXhvEzk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 14C10C2BCB8; Tue, 12 May 2026 21:38:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1778621899; bh=JDmtabrmtkgudonhpGTLj3QWPdOipm5R0sCRut5oLM4=; h=Date:To:From:Subject:From; b=wPXhvEzkr0PJ1Kl9Fma54UJGOkYkxJAX2ImngSCBI/jAXC8eHRuW4IAPPq/UY5GGd 51gIwQ1yNs1CFyLJvUpS+v1r+IJBhjandfbaYYpz675UsJ96BOcG4n9SK2HkB9Yktf zy3OGJ7G6QL7hf83ZczxRXttBSxCXWYJkvvjVhyY= Date: Tue, 12 May 2026 14:38:18 -0700 To: mm-commits@vger.kernel.org,sj@kernel.org,agarwal.vineet2006@gmail.com,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-damon-sysfs-schemes-fix-double-increment-of-nr_regions.patch added to mm-new branch Message-Id: <20260512213819.14C10C2BCB8@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/damon/sysfs-schemes: fix double increment of nr_regions has been added to the -mm mm-new branch. Its filename is mm-damon-sysfs-schemes-fix-double-increment-of-nr_regions.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-sysfs-schemes-fix-double-increment-of-nr_regions.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. The mm-new branch of mm.git is not included in linux-next If a few days of testing in mm-new is successful, the patch will me moved into mm.git's mm-unstable branch, which is included in linux-next 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 various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Vineet Agarwal Subject: mm/damon/sysfs-schemes: fix double increment of nr_regions Date: Tue, 12 May 2026 09:41:57 +0530 damos_sysfs_populate_region_dir() increments sysfs_regions->nr_regions twice when adding a new region: once explicitly before kobject_init_and_add(), and once again through the post-increment used for the kobject name. As a result, nr_regions no longer matches the actual number of live regions, and region directory names skip numbers (1, 3, 5, ...). Use the already incremented value for naming instead of incrementing nr_regions a second time. Link: https://lore.kernel.org/20260512041157.109845-1-agarwal.vineet2006@gmail.com Fixes: 66178e4ec30a ("mm/damon/sysfs: use damos_walk() for update_schemes_tried_{bytes,regions}") Signed-off-by: Vineet Agarwal Reviewed-by: SeongJae Park Signed-off-by: Andrew Morton --- mm/damon/sysfs-schemes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/damon/sysfs-schemes.c~mm-damon-sysfs-schemes-fix-double-increment-of-nr_regions +++ a/mm/damon/sysfs-schemes.c @@ -2998,7 +2998,7 @@ void damos_sysfs_populate_region_dir(str if (kobject_init_and_add(®ion->kobj, &damon_sysfs_scheme_region_ktype, &sysfs_regions->kobj, "%d", - sysfs_regions->nr_regions++)) { + sysfs_regions->nr_regions)) { kobject_put(®ion->kobj); } } _ Patches currently in -mm which might be from agarwal.vineet2006@gmail.com are selftests-mm-khugepaged-initialize-file-contents-via-mmap.patch mm-khugepaged-return-eagain-for-scan_page_has_private-in-madv_collapse.patch selftests-mm-check-file-initialization-writes-in-split_huge_page_test.patch mm-damon-sysfs-schemes-fix-double-increment-of-nr_regions.patch