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Date: Tue, 12 Aug 2025 10:23:20 +0200
From: Christoph Hellwig <hch@lst.de>
To: Kanchan Joshi <joshi.k@samsung.com>
Cc: kbusch@kernel.org, hch@lst.de, axboe@kernel.dk, brauner@kernel.org,
	josef@toxicpanda.com, jack@suse.cz, jlayton@kernel.org,
	linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
	gost.dev@samsung.com
Subject: Re: [RFC PATCH 3/5] fs: add a write stream field to the inode
Message-ID: <20250812082320.GC22212@lst.de>
References: <20250729145135.12463-1-joshi.k@samsung.com> <CGME20250729145337epcas5p42503c4faf59756ac1f3d23423821f73b@epcas5p4.samsung.com> <20250729145135.12463-4-joshi.k@samsung.com>
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On Tue, Jul 29, 2025 at 08:21:33PM +0530, Kanchan Joshi wrote:
> Prepare for supporting per-inode write streams.
> Part of the existing 32-bit hole is used for the new field.

Bloating the inode for everyone for this is probably not a good idea.
I.e. you'd probably want this in the file system specific inodes for
file systems that can just do data placement.