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Date: Tue, 13 Oct 2026 13:59:26 +0200
From: Christoph Hellwig <hch@lst.de>
To: Tal Zussman <tz2294@columbia.edu>
Cc: Theodore Ts'o <tytso@mit.edu>,
	Andreas Dilger <adilger.kernel@dilger.ca>,
	Baokun Li <libaokun@linux.alibaba.com>, Jan Kara <jack@suse.cz>,
	Ojaswin Mujoo <ojaswin@linux.ibm.com>,
	"Ritesh Harjani (IBM)" <ritesh.list@gmail.com>,
	Zhang Yi <yi.zhang@huawei.com>,
	Taotao Chen <chentaotao@didiglobal.com>,
	Christian Brauner <brauner@kernel.org>,
	Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
	"Matthew Wilcox (Oracle)" <willy@infradead.org>,
	linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ext4: complete dropbehind writeback in task context
Message-ID: <20261013115926.GA2944@lst.de>
References: <20261012-ext4-dontcache-complete-in-task-v1-1-6ac801557041@columbia.edu>
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User-Agent: Mutt/1.5.17 (2007-11-01)

I wonder if we can add a test to xfstests using say the mincore command
in xfs_io to check if the pages actually get dropped after a trivial
RWF_DONTCACHE write to verify this behavior?