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 2E63A7DA6A for ; Sun, 20 Jul 2025 02:02:06 +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=1752976926; cv=none; b=eb0+p6FoNwPNZ0BUyZ15/a/AaP0dZmShR62kYaYdz4JaGN2vJgVQqjWvRchJ/m4+vYhbCcqozL+OSmjC8VlJRQUr+55Dk82INahlYe2Lkc5TDcOJ/gIn9vr3R6ESEzZHzTeAlk0PUl9Kr2B5qNFirvAH4/Nz+jYiHKEMCdtrj2I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752976926; c=relaxed/simple; bh=ML1FnbMWBIom2CobhLszZxLVzpInUwsWArtymhTpDy8=; h=Date:To:From:Subject:Message-Id; b=SOaS6Go9N4I8ccnMM8KsQF1Zewn/LavvD+z3vdST9NYqZ8/5A3n6zcGDRsRXJQhK+pruzPBv6+oQvZjr+gGYQAoOYWySyiaKzvwj4ZgJ9pF/MGCPHL1feHKPDFaLXmKISsRv3drcxVc9X+OMzqT55/S8l9jcZRPWOOLcJzUbkv0= 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=gKLOSc52; 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="gKLOSc52" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0251CC4CEF4; Sun, 20 Jul 2025 02:02:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1752976926; bh=ML1FnbMWBIom2CobhLszZxLVzpInUwsWArtymhTpDy8=; h=Date:To:From:Subject:From; b=gKLOSc52400on8hmERmer26zi4r8wb96BdJBBH+MDbbFYrnrWA3kKm1JRfU/dJI+5 GkIM4PLXj7t22A7b3JeO9AY9cUTWruXY/I+GqJthZUwLMGB60D/nrSHj8+eZ8LMAIl HTJ6NPyyWaSvgiV0fumvFh+JThImUD0WcpoDS39o= Date: Sat, 19 Jul 2025 19:02:05 -0700 To: mm-commits@vger.kernel.org,vbabka@suse.cz,pfalcato@suse.de,lorenzo.stoakes@oracle.com,liam.howlett@oracle.com,jannh@google.com,liuqiye2025@163.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-simplify-min_brk-handling-in-brk.patch removed from -mm tree Message-Id: <20250720020206.0251CC4CEF4@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm: simplify min_brk handling in brk() has been removed from the -mm tree. Its filename was mm-simplify-min_brk-handling-in-brk.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Xuanye Liu Subject: mm: simplify min_brk handling in brk() Date: Thu, 10 Jul 2025 10:58:58 +0800 Set min_brk to mm->start_brk by default, and override it with mm->end_data only when CONFIG_COMPAT_BRK is enabled and brk_randomized is false. This makes the logic clearer with no functional change. Link: https://lkml.kernel.org/r/20250710025859.926355-1-liuqiye2025@163.com Signed-off-by: Xuanye Liu Reviewed-by: Pedro Falcato Reviewed-by: Lorenzo Stoakes Cc: Jann Horn Cc: Liam Howlett Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- mm/mmap.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) --- a/mm/mmap.c~mm-simplify-min_brk-handling-in-brk +++ a/mm/mmap.c @@ -127,18 +127,15 @@ SYSCALL_DEFINE1(brk, unsigned long, brk) origbrk = mm->brk; + min_brk = mm->start_brk; #ifdef CONFIG_COMPAT_BRK /* * CONFIG_COMPAT_BRK can still be overridden by setting * randomize_va_space to 2, which will still cause mm->start_brk * to be arbitrarily shifted */ - if (current->brk_randomized) - min_brk = mm->start_brk; - else + if (!current->brk_randomized) min_brk = mm->end_data; -#else - min_brk = mm->start_brk; #endif if (brk < min_brk) goto out; _ Patches currently in -mm which might be from liuqiye2025@163.com are