From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lf1-f41.google.com (mail-lf1-f41.google.com [209.85.167.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8BBB63B71CB for ; Fri, 5 Jun 2026 09:51:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.41 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780653062; cv=none; b=RnTltuCeSRvIk8Wny8vd079K7Wic/TuzAZ7zXI4SAmyPOkEr0GRprfBgdxybeXgJ9vCnETzkQZqPorqXwmRGaQwPGGbbDkPnDr3Pe7FXFNKDv5E87SlNs07+VGitEM+gMpDAot3H0LErpJhhAOYSEf3/DeG1Up3pWDkYG4k7zYQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780653062; c=relaxed/simple; bh=Eu3wfuEQrxBBkGKCkeAzZasx5ExuiXoVmmjPgYkiKnE=; h=From:Date:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=cKxJPXvbu9HZMnxICMkxRcoJ2e9cAsD+R3ieAkEZsHP+gVSpArLJle2ts2Mna3w1CgU9k371QckB30FEhUbdRMeWhYIFZAc3bffDugOyRpBdZZw/4eUXV3/pbRg0MnKTjuI/ye+K1Ej6l0eJMVrYYv1rWubkpJLub2JYtIeg2xk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=eW47JDlk; arc=none smtp.client-ip=209.85.167.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="eW47JDlk" Received: by mail-lf1-f41.google.com with SMTP id 2adb3069b0e04-5aa2c25c632so1802116e87.1 for ; Fri, 05 Jun 2026 02:51:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1780653059; x=1781257859; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:date:from:from:to:cc:subject:date:message-id:reply-to; bh=xjcf+ZeYGf95GdPFKMkbVvi+CX0UN2Mwhbe9F7S/JCk=; b=eW47JDlkG9AyVc+yVGis+R03w+8ToWfDDo4Y3viCp57B3kR5wbz/FAqd47r4pYFSOm FkRIMiTET+hwmWxpKsFkhnrafbjsavxC2M0FzEaXg835X22wv9ZLa4QkUuqymYu4Ynaq 8FkbMu3QVv/Fd70C0BDUvwGZRDz7ZT2lzCOFjoZlgISZM4oKJPZzqpBAS4ySo6D4fL3A uTv071a7XkMBuJViLY3t3Z9lGSFGUfs5ijatPPH8V36SOWbRCQaIaB/SNBIWePTCrX/V qbxnHIbjcApzVvHgh0B6WI7h5dc1xUH/mh/dz9blSkfPG/zCpE9t73QUCYijukbosPXu fQDA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780653059; x=1781257859; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:date:from:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=xjcf+ZeYGf95GdPFKMkbVvi+CX0UN2Mwhbe9F7S/JCk=; b=SvvgwLXEtMjODvgq74vbsfeTssXq6So0dw9lsVI3mCGUyO5SVByBYvN9V8/Y96IYCZ fXAnh7FXgauUqT4pMnmb0lBxNcs/8/UjwTzp1nbGfIGR3ADYcgx70dinbOFM65M7yvdH 0GNpcTZ3OCyL+Oe/eO2A2LPKaXC4fDCqM+yn00gMLH4iDfy70nYmJLZsuq+XrIB17Xlw FPNl5P4MspX2aq0IjVrwxYYdmgc+yr6L85jn5SSXOmxdHhzca/ydp6qaE2+199jbfuob qkWHmLNE0igvPwT7MAhRz3H+q9yumogVy9s/STOPL+KWEy9m+PKya5+hkVedBpyJ9sCj 6JQA== X-Forwarded-Encrypted: i=1; AFNElJ9XuwDjaaWeYJdFkeQOOhbUCuQdh9HzIRd+cA6LkY6M2BaGgYCNc3nWDYiEH6W3uKPSaBzfiMRci+Q=@vger.kernel.org X-Gm-Message-State: AOJu0Yw+9zlASPZUDJsTEXn1dE4AXSGnZZz0uF6/Zj+j83CjPzx59Zw1 U1g7APSAdd4bk1amCAzVp4EgZXfO0e8OGGDKBGuk3P6AXSr0vegTihG0 X-Gm-Gg: Acq92OFLcgJMAKAUpKfPm0aM2k6FtTXdSqWydWrOiC2mKxVb1Lvm4Prr7/UNp8TC0qI uzSa042LT8deOtiA7xk4BYxut7RppAkHmVJkSQ+hhkq4LHfE607/gG+Tb4kfvULsO3QYp2pRhhY nsgLjlgGw1zXADLVIzVfa3B7awU1JOsOz7vBrNj1e19/hloxOgMSL94eY50B4XuX4ZcOSjJkw6u lCxWJ11ySmNZdP265EbjoWxAPw+HdQdk8LZf3aLlUwt5tojUWIXLC2Q5p/6rtitJb155TM3pL8G mLfQ1HilUHR0cnNMb+as3vmdEi2hME8c4CkIHGRhbuan49wiAaKWK5ajR4tvHW94kWI0OIcRbcg FpEraujJAsaWBc7p3K4X5w4EpEVqy+p6S4+TPhGl816cnQG3TBTxwVH5hahWrJrZTFY6K0QYL5D QPxfHtRgbs9CXBMkQPuOw= X-Received: by 2002:ac2:4e0e:0:b0:5a8:6cbc:60f3 with SMTP id 2adb3069b0e04-5aa87c03398mr899588e87.34.1780653058812; Fri, 05 Jun 2026 02:50:58 -0700 (PDT) Received: from pc636 ([2001:9b1:d5a0:a500:de96:9acf:5dca:ede4]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5aa7b97a71fsm1761298e87.46.2026.06.05.02.50.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Jun 2026 02:50:58 -0700 (PDT) From: Uladzislau Rezki X-Google-Original-From: Uladzislau Rezki Date: Fri, 5 Jun 2026 11:50:56 +0200 To: David Laight Cc: Theodore Tso , Mike Rapoport , Jan Kara , Mark Fasheh , Joel Becker , Joseph Qi , Ryusuke Konishi , Viacheslav Dubeyko , Trond Myklebust , Anna Schumaker , Chuck Lever , Jeff Layton , NeilBrown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Alexander Viro , Christian Brauner , Jan Kara , Dave Kleikamp , Miklos Szeredi , Andreas Hindborg , Breno Leitao , Kees Cook , "Tigran A. Aivazian" , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, ocfs2-devel@lists.linux.dev, linux-nilfs@vger.kernel.org, linux-nfs@vger.kernel.org, jfs-discussion@lists.sourceforge.net, linux-ext4@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH 10/17] jbd2: replace __get_free_pages() with kmalloc() Message-ID: References: <20260523-b4-fs-v1-0-275e36a83f0e@kernel.org> <20260523-b4-fs-v1-10-275e36a83f0e@kernel.org> <20260605093332.7b067876@pumpkin> Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260605093332.7b067876@pumpkin> On Fri, Jun 05, 2026 at 09:33:32AM +0100, David Laight wrote: > On Thu, 4 Jun 2026 10:05:52 -0400 > "Theodore Tso" wrote: > > ... > > I suppose we could do it with kmalloc() with some flags which to > > prevent forced reclaim / compaction, and if that fails, then fall back > > to vmalloc(). Is there a better way? > > There is already kvalloc(). > I'm not sure how hard that tries to get kmalloc() to succeed. > I assume you mean kvmalloc()? kvalloc() is something unknown to me. -- Uladzislau Rezki