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b=hgSVGb09p6RVPa4VD4wM6ajuJroxiqb5xQdfqesS5PCPPRXDunHNOTSEVcSJHy9aG +AuPVRaLbE+4K02gIVLz9bVDxefp/JOMbeEGZFYNJBMU6CMbqHiqdiA3q0ovQILLFr vALgd9Ze5FR2OAiJ1268wWqu4HG99NS5CHNrS4hA= Date: Tue, 25 Jun 2024 11:58:55 -0700 From: Andrew Morton To: David Hildenbrand Cc: Gavin Shan , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, djwong@kernel.org, willy@infradead.org, hughd@google.com, torvalds@linux-foundation.org, zhenyzha@redhat.com, shan.gavin@gmail.com Subject: Re: [PATCH 0/4] mm/filemap: Limit page cache size to that supported by xarray Message-Id: <20240625115855.eb7b9369c0ddd74d6d96c51e@linux-foundation.org> In-Reply-To: <33d9e4b3-4455-4431-81dc-e621cf383c22@redhat.com> References: <20240625090646.1194644-1-gshan@redhat.com> <20240625113720.a2fa982b5cb220b1068e5177@linux-foundation.org> <33d9e4b3-4455-4431-81dc-e621cf383c22@redhat.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 362F418000E X-Stat-Signature: 7z77cp3j7ue1pwpxz1nhj6muqjyw3dmz X-HE-Tag: 1719341936-15230 X-HE-Meta: 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 WCJvT4u7 8+sDt3i6C1jgxr+K4W15Slq/FN+fSODEx3No08oewO13pN13ikTKnzoY46gesoIlHqXKUxPafvdocfvQphonUNAGLlhFSUs/ovgPfPKJJATKr8XJIEeukvv+1CukRzypqotR89uXsMYZxMy5qIHMIVgjB8TjprLWAJA7yqFf1/1jjteXdyB3JaWtmaBClQViaXFcM0bCoNTqYNxG1bwfgUkUbSjpdiakmtiRqh3ubmQHPtaKJu6pvXrkMbet6rzZYkFSKsMqbHwvrTqTdKM/BPSP+zcU6d5FsGgThnqeTQw+4CDf4S69JI4skeq2MUirGyJ3L6neX6kLU0JGmPD1GoSmEJQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, 25 Jun 2024 20:51:13 +0200 David Hildenbrand wrote: > > I could split them and feed 1&2 into 6.10-rcX and 3&4 into 6.11-rc1. A > > problem with this approach is that we're putting a basically untested > > combination into -stable: 1&2 might have bugs which were accidentally > > fixed in 3&4. A way to avoid this is to add cc:stable to all four > > patches. > > > > What are your thoughts on this matter? > > Especially 4 should also be CC stable, so likely we should just do it > for all of them. Fine. A Fixes: for 3 & 4 would be good. Otherwise we're potentially asking for those to be backported further than 1 & 2, which seems wrong. Then again, by having different Fixes: in the various patches we're suggesting that people split the patch series apart as they slot things into the indicated places. In other words, it's not a patch series at all - it's a sprinkle of independent fixes. Are we OK thinking of it in that fashion?