From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8DEE4C433EF for ; Wed, 15 Jun 2022 14:37:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231187AbiFOOhj (ORCPT ); Wed, 15 Jun 2022 10:37:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230160AbiFOOhi (ORCPT ); Wed, 15 Jun 2022 10:37:38 -0400 Received: from mail-yw1-x1136.google.com (mail-yw1-x1136.google.com [IPv6:2607:f8b0:4864:20::1136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 93ED6EB7 for ; Wed, 15 Jun 2022 07:37:37 -0700 (PDT) Received: by mail-yw1-x1136.google.com with SMTP id 00721157ae682-31332df12a6so63372307b3.4 for ; Wed, 15 Jun 2022 07:37:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:from:date:message-id:subject:to; bh=1L875HB2891PfPTiRfpgrWU9o4RsmbqFGyMf6TOpDh0=; b=h0L8hDbAx91p6ZQXR4l3DL1A8baHYfLLtxoVXYfATxbBT2ijyC87JaNnnLcmlm8UME NVLljotF5JTx1PHOJ8nSxBRr+gEESpMdpMrRwlRrgvqr3K691BBjTUVE+PqrvBYSfsJ0 gd+3YJD+DuDeMOJ618KhaHlhH38m9CmbctHixAaWx3eG2k3Nf48XwdqumNuNvv4CuUDd N4F0KTruNcVUgFS/0BgkJlkMdZw1JlaC/ZmUJbkaTBCr/tWVXbmrVIjiCoWnDoJO4oVv +wvGsLMCy/UJFGt7fmOxffUMgCvekpcBdQpaRS49LC1xFZU+3jJKA/dUqFeJAerWOXmK tjKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=1L875HB2891PfPTiRfpgrWU9o4RsmbqFGyMf6TOpDh0=; b=vYiHjbYOwxLFvnHc0i6pGK7zvHSiMDdnKkEcCp9GT/4C2OwzYcy0f1a5bUrptsod6t PStz6yQNDfGs/ad6V7ipgrCZRb4OjCm0xo/5Je8CocbMKqzLq9HqhvN+aRvAKccfden9 nj3qw1J3cQ9hocoPCeiLVgkD9iYKqjpvuPpaxmfrTgFzPjXOypyaCIQG5L2cTQG6Gd5K KzYTtCRMR0QjUKhtzEpwSzxKxpBK3G5iffxh5Be2tzDAuhye0AJo4Kw2WZ6vEvT2YjkD anNd7uTkzxEZqWW1vwtpN7K1eMiU6Pp/tZHQ9h06WrSIhrWNgNmxcfjI4IBFJRZ21LUA k4KA== X-Gm-Message-State: AJIora8MMbHEsO2KpoLddjDC1he3LtwiGdNyoPBI1Lc0BKgeIJcFJI9R /CTDrMMohH2ONUcshJ0sMNoo3Vf3MVqvt31mKbca+rTj X-Google-Smtp-Source: AGRyM1uIXkL5lRVUyhlpHHnpEgPCEPJ56jkDqNPJIXnMunrzVmL/NNIkHJDyaSiB9eqa1yszcjyP4hOIlig1c8cvodk= X-Received: by 2002:a0d:e601:0:b0:313:ffa6:2f6e with SMTP id p1-20020a0de601000000b00313ffa62f6emr11892803ywe.420.1655303856637; Wed, 15 Jun 2022 07:37:36 -0700 (PDT) MIME-Version: 1.0 From: Pintu Agarwal Date: Wed, 15 Jun 2022 20:07:25 +0530 Message-ID: Subject: Reserving a dedicated space inside UBI volume To: linux-fsdevel , linux-mtd , dwmw2@infradead.org, computersforpeace@gmail.com, boris.brezillon@free-electrons.com, marek.vasut@gmail.com, Richard Weinberger , cyrille.pitchen@wedev4u.fr Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Hi, We have a requirement where we need to reserve a space (say 100MB, just like RAM) for a specific folder inside a UBI partition/volume. This space will be used for a specific purpose only and not accessible by others. Something like the reserved area for bad block management. Is there a way to achieve this from the user space application at runtime ? One option is to create a dedicated volume and operate, but we are looking for a reserve-folder within the existing ubi volume itself (if possible). Regards, Pintu