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Tue, 13 Oct 2026 04:00:02 -0400 (EDT) Date: Tue, 13 Oct 2026 09:59:58 +0200 From: Greg KH To: stable@vger.kernel.org, Sasha Levin , stable-commits@vger.kernel.org, xiang@kernel.org, Chao Yu , Yue Hu , Jeffle Xu , Sandeep Dhavale , Hongbo Li , Chunhai Guo , Jonathan Corbet , Shuah Khan , Randy Dunlap , linux-erofs@lists.ozlabs.org Subject: Re: Patch "erofs: remove fscache backend entirely" has been added to the 6.18-stable tree Message-ID: <2026101352-subtract-deflector-a77b@gregkh> References: <20261013020044.2527207-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@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 Tue, Oct 13, 2026 at 09:28:44AM +0200, Gao Xiang wrote: > Hi Sasha, > > I'm not sure why we need to backport this into stable kernels, as there > are users who use EROFS over fscache on these stable kernels. > > The functionality works and it's a breaking change. Could you please > kindly tell why? Why would you have a breaking change in Linus's tree? We never break existing users, so how was this ever accepted in mainline? As this removal fixes known bugs, isn't that a good thing for those older users as well? Why would you want them to run broken systems? thanks, greg k-h