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Wong" , Carlos Maiolino , Alexander Viro , Dave Chinner , Bart Van Assche , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Gao Xiang Subject: Re: [PATCH v6 1/4] block: add task-context bio completion infrastructure Message-ID: References: <80cb53f3-e7e5-4f96-bacc-f9fb7661d976@columbia.edu> <4jtsjd2sbsn2w7fzfwb7wwowz72r4kc6345ckkkcjoxjbbwjwn@rkl44x3o3sgy> <8124341f-3af2-4a16-897d-38db5ab5a9d4@columbia.edu> <4ahxusvs255ibn5unrayfeioqijbbidtn3l7joczxphwo2faee@3wtnw4nzu6wi> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4ahxusvs255ibn5unrayfeioqijbbidtn3l7joczxphwo2faee@3wtnw4nzu6wi> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 4952980005 X-Stat-Signature: nrasxeokojforod3ffa9i9sycs7jzqso X-Rspam-User: X-HE-Tag: 1785314919-819304 X-HE-Meta: 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 mi18obKR 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Jul 29, 2026 at 10:41:40AM +0200, Jan Kara wrote: > This looks a bit hacky and at least deserves a comment. Ideally we'd get > rid of the xfs workqueue and rely on the generic offloading mechanism. But > as Christoph wrote maybe let's just get something good enough in and we can > work on improving that later. In particular if Christoph has a plan how to > clean this up :). The XFS workqueue can't just go away, as for writes that require completion time processing (unwritten extent conversion, i_size logging, zoned block mapping), we want to serialize the processing on a per-inode basis as otherwise the different helpers would just content on the xfs inode lock and burn cycles. We want to get rid of it for read completions, and a patch for that is in the lazy bounce series I posted a few days ago.