From nobody Mon Feb 9 07:28:16 2026 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (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 D6C6B182D2 for ; Mon, 1 Jul 2024 03:41:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719805297; cv=none; b=HJTvBQ3vU1rl7OHkkuZylwAqkVhFfQNKmHdjTXN92myUPNb+15zbR01L9gqWJ6AB7kJ14CqAoFIR2ui5vIN0Ck5pHflvF8vSB9F4JMD9iX/vVW+vF568e5Z0AKxmzlwiv63y2ig54EHg3loMMa6ib6LrC/ngtLgATUwNSuz+5w0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719805297; c=relaxed/simple; bh=y3WnovNNW3Z+2WUTkJVPMku/QUpINyrdhika/pXn5WY=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=I73ZCEOp0D07C7o7q+FVNmpgvCALGIKF4eTNAs/eTN1DkvLUx+6y3nvt1f1xsvFFIAdc1RZ6bEMlF42L+VWP8Rs0ezxzop4JvxN88l5+0P9L1SojYPQsfWRjSCV2rk1noVa/VfzPaIQCoE43UBJCR1Fsy5KpvRs4RZkjT9f0TmU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: c5b985cc375b11ef93f4611109254879-20240701 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.38,REQID:b4ced21e-6492-4fc9-aedd-e54a5c760c26,IP:0,U RL:0,TC:0,Content:-5,EDM:-25,RT:0,SF:-9,FILE:0,BULK:0,RULE:Release_Ham,ACT ION:release,TS:-39 X-CID-INFO: VERSION:1.1.38,REQID:b4ced21e-6492-4fc9-aedd-e54a5c760c26,IP:0,URL :0,TC:0,Content:-5,EDM:-25,RT:0,SF:-9,FILE:0,BULK:0,RULE:EDM_GE969F26,ACTI ON:release,TS:-39 X-CID-META: VersionHash:82c5f88,CLOUDID:a7ca31e2781213daf043e2d3116a8573,BulkI D:24070111381932D88IRB,BulkQuantity:1,Recheck:0,SF:43|74|66|38|24|17|19|10 2,TC:nil,Content:0,EDM:1,IP:1,URL:1,File:nil,RT:nil,Bulk:40,QS:nil,BEC:nil ,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_FAS,TF_CID_SPAM_FSD,TF_CID_SPAM_FSI,TF_CID_SPAM_IBB, TF_CID_SPAM_ULS,TF_CID_SPAM_SNR X-UUID: c5b985cc375b11ef93f4611109254879-20240701 X-User: zhaomengmeng@kylinos.cn Received: from localhost.localdomain [(123.150.8.42)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA with TLSv1.3 TLS_AES_256_GCM_SHA384 256/256) with ESMTP id 925970037; Mon, 01 Jul 2024 11:41:17 +0800 From: Zhao Mengmeng To: akpm@linux-foundation.org, yang@os.amperecomputing.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v1] mm: gup: add forward declaration for try_grab_folio_fast Date: Mon, 1 Jul 2024 11:40:52 +0800 Message-Id: <20240701034052.9988-1-zhaomengmeng@kylinos.cn> X-Mailer: git-send-email 2.33.0 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 Content-Type: text/plain; charset="utf-8" try_grab_folio_fast() was used in gup_hugepte(), while itself was defined after gup_hugepte(), so add a forward declaration to eliminate the -Wimplicit-function-declaration warning. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202407010039.D3sIu3fu-lkp@int= el.com/ Signed-off-by: Zhao Mengmeng --- mm/gup.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/gup.c b/mm/gup.c index 7439359d0b71..222b83a87d7d 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -488,6 +488,9 @@ static unsigned long hugepte_addr_end(unsigned long add= r, unsigned long end, return (__boundary - 1 < end - 1) ? __boundary : end; } =20 +static struct folio *try_grab_folio_fast(struct page *page, int refs, + unsigned int flags); + /* * Returns 1 if succeeded, 0 if failed, -EMLINK if unshare needed. * --=20 2.33.0