From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sendmail.purelymail.com (sendmail.purelymail.com [34.202.193.197]) (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 777A62D5432 for ; Tue, 10 Jun 2025 22:59:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=34.202.193.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749596351; cv=none; b=qaLChp43xLtnkvhdcvOKfeUR16BPhJLbpLT1o6AIXbbeOJbdNdx/xmOoy31WmmhC6FZHyflbnAr92Rq8H+Puh6M+WqqDmDXhGbCrDnRUpMuF/NzSuFpV2LaxdmOXI0YDSPHs+kNX0pZ9xrtn92EVgyBSqn8eDee1LVoZo/CVQ20= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749596351; c=relaxed/simple; bh=f/VDHmbOT1oXljZqPn2oqb0nTFqkMhME3Nenhf3HdBA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=ieE+OuWSoHbSDx2HWzhBwf6VB76waKMlM1upW4M5QjLioHKWLnJWY744ElKv6WbkLU9JTW5Q5aDMjpQyRevTgCa6im2zHZ1mleVy6rsMup/Aa1ijNlpSgXScAhlTriw0ZBam8JSbLIkcktcWJKn8lcCdHE1DzJrWbC6fQHoLvYQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=elijahs.space; spf=pass smtp.mailfrom=elijahs.space; dkim=pass (2048-bit key) header.d=elijahs.space header.i=@elijahs.space header.b=m5YFtmCM; dkim=pass (2048-bit key) header.d=purelymail.com header.i=@purelymail.com header.b=epuefpiu; arc=none smtp.client-ip=34.202.193.197 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=elijahs.space Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=elijahs.space Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=elijahs.space header.i=@elijahs.space header.b="m5YFtmCM"; dkim=pass (2048-bit key) header.d=purelymail.com header.i=@purelymail.com header.b="epuefpiu" Authentication-Results: purelymail.com; auth=pass DKIM-Signature: a=rsa-sha256; b=m5YFtmCMo6bDCFO/4VZKWnNGL+7VnKs6+Bn0Bzi40VMndBTazErxROUeRcuYLosinpaJeRiWsjhwwVbZc2n6lEtoz43z/8jZCIzL/sefqcYDnczI/JVZSRHOhgQ62vC0bLMtqlgq6++HQROnPeZO1Hvq/9VbG4ZsGLFK/eCij47cOjQLYmMrGrEiJudNNreoLj2zO5MlOvZrwhqcMiz6FL83zsh+q7FT1mnf85G+lm/tL2nE5jw7qQoCeefI0RujYiZ6QwGeXXcz7eW54CbtY/SFCHIzcU2CeKnj52XuHdWv7M4uJ4Za3BOSYUskVZHj+cPaE3vhbkSD11DCdKOMSg==; s=purelymail2; d=elijahs.space; v=1; bh=f/VDHmbOT1oXljZqPn2oqb0nTFqkMhME3Nenhf3HdBA=; h=Received:From:To:Subject:Date; DKIM-Signature: a=rsa-sha256; b=epuefpiuIlOwbmcMSxEJaq5ynJ4zUSBPXM4jGOcfEzmtLxKDxyBcjwwYPP2mKCM6ga6XBILBReVWNFzMQp1dX+/cZVEvyC18hbBe4pIKSbsiNZYYX5Wxb1TOK7XMiwzwdfXrSCTvmZ/r2lLj6Wudnhvy1nLhsiqulmFlTPcxdVzHUgKli1RJeFTjEv05eCTaciJwlKlpxDw0+84+izwkhhs6vgN7yw1H0VUvTiJCUcBmSDylZsPql3c2F2kBLV2nVdfa+7i4dIdJGEQgWzD5i1oucTUKjmazrNw+MaTlfkZzG5v30xVBsJiKhSaBrycfoI440EwH3qHgadyEzk+T3w==; s=purelymail2; d=purelymail.com; v=1; bh=f/VDHmbOT1oXljZqPn2oqb0nTFqkMhME3Nenhf3HdBA=; h=Feedback-ID:Received:From:To:Subject:Date; Feedback-ID: 147366:4866:null:purelymail X-Pm-Original-To: linux-kernel@vger.kernel.org Received: by smtp.purelymail.com (Purelymail SMTP) with ESMTPSA id 235931968; (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384); Tue, 10 Jun 2025 22:58:52 +0000 (UTC) From: Elijah Wright To: linux-kernel@vger.kernel.org, akpm@linux-foundation.org Cc: Elijah Wright Subject: [PATCH] kernel: relay: use __GFP_ZERO in relay_alloc_buf Date: Tue, 10 Jun 2025 15:56:28 -0700 Message-ID: <20250610225639.314970-3-git@elijahs.space> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by Purelymail Content-Type: text/plain; charset=UTF-8 passing the __GFP_ZERO flag to alloc_page should result in less overhead th= an using memset() Signed-off-by: Elijah Wright --- kernel/relay.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/kernel/relay.c b/kernel/relay.c index c0c93a04d4ce..3ee5b038d0d9 100644 --- a/kernel/relay.c +++ b/kernel/relay.c @@ -118,7 +118,7 @@ static void *relay_alloc_buf(struct rchan_buf *buf, siz= e_t *size) =09=09return NULL; =20 =09for (i =3D 0; i < n_pages; i++) { -=09=09buf->page_array[i] =3D alloc_page(GFP_KERNEL); +=09=09buf->page_array[i] =3D alloc_page(GFP_KERNEL | __GFP_ZERO); =09=09if (unlikely(!buf->page_array[i])) =09=09=09goto depopulate; =09=09set_page_private(buf->page_array[i], (unsigned long)buf); @@ -127,7 +127,6 @@ static void *relay_alloc_buf(struct rchan_buf *buf, siz= e_t *size) =09if (!mem) =09=09goto depopulate; =20 -=09memset(mem, 0, *size); =09buf->page_count =3D n_pages; =09return mem; =20 --=20 2.43.0