From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f172.google.com (mail-pf1-f172.google.com [209.85.210.172]) (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 9FF7225A64C for ; Tue, 14 Oct 2025 21:57:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760479048; cv=none; b=YHdvgLbdkqZxjVd0yUb1Adiaadxsa79pMufyKc9vTCNzFxEDRa2hL/6eIsnTOiR4uKEdHSbnMsQ9i5xjokxKi1vR8UKtgKHEXIJflGHbNl0ruT0xogakFJuhhGXvYxO0unvxq4xDexgWK0PJJNGapSVNBH3BTHe5yzy2V89O7ZY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760479048; c=relaxed/simple; bh=lbp/svBrqIT8k+MRq3/jmjxuU8akOPgMPTESYka1epE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=tkHil6ySS/arTpewtAsSvU+OfSqI0ScG0Nu5eqmYNvNKu2ys4gWCO61urw+1jsdTJQPSa4mk8t/u7p9GxGYd7YCirhFNhUDNFhq+o7G09qTIww5aTzjArho0vXowxQNOvEjMQpxpiI1Ge4RxLO2s3PkAR2HCcvOPLbbLVS6Bb9E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=fromorbit.com; spf=pass smtp.mailfrom=fromorbit.com; dkim=pass (2048-bit key) header.d=fromorbit-com.20230601.gappssmtp.com header.i=@fromorbit-com.20230601.gappssmtp.com header.b=T9FjswIc; arc=none smtp.client-ip=209.85.210.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=fromorbit.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fromorbit.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fromorbit-com.20230601.gappssmtp.com header.i=@fromorbit-com.20230601.gappssmtp.com header.b="T9FjswIc" Received: by mail-pf1-f172.google.com with SMTP id d2e1a72fcca58-78118e163e5so295558b3a.0 for ; Tue, 14 Oct 2025 14:57:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fromorbit-com.20230601.gappssmtp.com; s=20230601; t=1760479046; x=1761083846; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=AL/bnV/py/dxrrqchUFB69kdjG2EwxKxcNMsAmNeKP0=; b=T9FjswIcdHH/j2782D1jjnXNP42OV1TStmHEnhaKyPrqOsbVq9lQfvfZv3GCqPnHD8 FexeoNXr3/gm3oCR/0fP2A3kMQ4O8hZjZlZs5bHR6KK7D52M04Q8LLKmoNukfj521A3p sx4DxPtKTjzkrOpxhir6wMCuPKzdV7iifb99ogfvN80U8/qJNKEJttNWXwOGOxyovtPt 1KybvFhAZBPZ7QT3cLgvrcVjxoWkmfgcEIbeRc0d7Kf044/O1eXmAKkl6zfRrqnsnBAZ ZrXMMCoeBhowPB7sMJ/esusntK1LQWjp/Pc4IlmJ2IJBA4N+e8cCd1lN8kPIsP3nlgzP zp9g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760479046; x=1761083846; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=AL/bnV/py/dxrrqchUFB69kdjG2EwxKxcNMsAmNeKP0=; b=KaN/5cBK3C+9jk856InoDHFpotgytlkagK29xmFNb5GJsB/t92HlYfbyYzpGYIdquX x1en0g/nck0WFsnjogsYmDDcm1v8vcjUnkcEp+a4wL3aBVDDU7vXOSnDjBn4uwn4AOuZ Mit7100RRlBfe3FDbdchSfoL0z6e49PDxnuJ8r96kpSXlva6ZnaKgPj3KsnlI1+O0BzS 6TqLf2ZUSvbB7mmNl/u4JKzNez7kHWwR8Qy+6X78YXD3Lkaneg/+cc27z8WhCFGuD65H pLKrAf4Bcb0gRRk8ypHor4wKmA5vY9xvEEpX12BJCkCRyO888/po+VE2AIcBz7SGaY7h m4ng== X-Forwarded-Encrypted: i=1; AJvYcCVYevXqkquzjv6k4GWTeuNGDT5dEMduTgYFGMRUoSghWi+jizMvLcH8mvhY0yF179pl/ejCS4/b5Mv109M=@vger.kernel.org X-Gm-Message-State: AOJu0Yx+ftMvjM0dqgZljzjiqKIttBoLDc4Eqd7z1kxg6117DO9Mn7BI W1k/mru7JYmMUwoa2PFoFL9KNhW6hFami0OlNZvDibCqA8CsxSzXg34JGdKV7lgtkF3Ka15GSSW mD39N X-Gm-Gg: ASbGnctkRRD+fVQ3+lpixCszICQKNbSSoCb/U0zkBL9F+4HG7euwS3V0J0ahaVodAv3 4o095qJjTNoxDqkY8nrlUrEJ/R3V8CCcZQK85r9r2hJ3vTnnUay2a+BMg8s2tcgXXsqhJe9gp2E FyrosAI8U6ZLkA1hz7pdmxQqItaLjoPrPG1wbAckRSHMZQeseG7xrqxxRFb075Il65m6Xsk7Gcn irf7F/NM//SkF1S9MIFyxvy43+Orl+LFSAvv0BuORxzKeNb8hzR/W34gnWNohrs8alwkw1rTpBh kKeQRQyaAzrcxtwGTUZk3MDjPvNqdfHCK8q8Xlp3db+wyCqMjLIS1vUGFKklbjbXfhN1NkoGlVW CtgPxHWf3YmsyzRqeQI87swaejaUOxw4Zj/ABHdPZA5I3zZQXyy8bnEWnTb6PGNTBfBbhOKmAVo tiqkIGGM/vwD1eSvB+6vJ94TW1Wj7Q7+TpnJBe2Q== X-Google-Smtp-Source: AGHT+IFEm7YEffZsxkb8K+nehDd+qD29oTSduQqQSjJ7xgEV6CAlDHsQGWe8Y3vIo1bRLa8jllHUlA== X-Received: by 2002:a05:6a21:3383:b0:2ac:7445:4947 with SMTP id adf61e73a8af0-32da8f7b6b6mr32112486637.19.1760479045581; Tue, 14 Oct 2025 14:57:25 -0700 (PDT) Received: from dread.disaster.area (pa49-180-91-142.pa.nsw.optusnet.com.au. [49.180.91.142]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b678dcbf919sm12945398a12.9.2025.10.14.14.57.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Oct 2025 14:57:24 -0700 (PDT) Received: from dave by dread.disaster.area with local (Exim 4.98.2) (envelope-from ) id 1v8n1G-0000000EtZi-0ICM; Wed, 15 Oct 2025 08:57:22 +1100 Date: Wed, 15 Oct 2025 08:57:22 +1100 From: Dave Chinner To: Jan Kara Cc: Mateusz Guzik , brauner@kernel.org, viro@zeniv.linux.org.uk, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, josef@toxicpanda.com, kernel-team@fb.com, amir73il@gmail.com, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, ceph-devel@vger.kernel.org, linux-unionfs@vger.kernel.org Subject: Re: [PATCH v7 03/14] fs: provide accessors for ->i_state Message-ID: References: <20251009075929.1203950-1-mjguzik@gmail.com> <20251009075929.1203950-4-mjguzik@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@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: On Fri, Oct 10, 2025 at 04:44:19PM +0200, Jan Kara wrote: > On Thu 09-10-25 09:59:17, Mateusz Guzik wrote: > > +static inline void inode_state_set_raw(struct inode *inode, > > + enum inode_state_flags_enum flags) > > +{ > > + WRITE_ONCE(inode->i_state, inode->i_state | flags); > > +} > > I think this shouldn't really exist as it is dangerous to use and if we > deal with XFS, nobody will actually need this function. XFS does it's own inode caching outside the VFS, so for the moment it needs to have access to the same VFS inode initialisation APIs as the core VFS inode cache instantiation functions to maintain the same externally visible behaviours. Yes, if we change how the VFS inode caches initialise inodes, we have to update the XFS code, but that's always been the case. This isn't very hard to do.... Keep in mind that XFS has been caching inodes outside the VFS and doing external state initialisation since it was first ported to Linux (i.e. ~25 years ago). It's kinda strange to suddenly hear people claim that this sort of VFS inode state manipulation thing is "too dangerous" to allow anyone to use given how long we've actually been doing this.... -Dave. -- Dave Chinner david@fromorbit.com