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b=drF6Gd2sEfG8BiufOAsQnmv1sX01/65+PUu+FOJDUx+js/ihAbH6E8KnfyfvfJ9y3 psk0xRAqayoj8r1CvZciQ3jQdPm8YdzkbxJ4GCyrj+pYfeDGY5Znyu7YNGRn71TgSF 9QY+Bf446FDYKvcNvU26meC2saSywHjGD8M+E9bxrJl7y4b15v5WJ41bGNVmD/NMm9 Qok7M74P2+pvbkJkG26XfJVQwaiwHhQQ3mmp3N5PoCJTNZEtyS+t2FLbiiPOgO+pB0 1oyAy1qO8N03/BtqK6E6PiGnRuGnkAjmYFjQmdhsZJFDXox88RcgScA74g0Sq5VBxQ jD6hVz6Brw8NA== From: SeongJae Park To: Linus Torvalds Cc: SeongJae Park , Geert Uytterhoeven , Andrew Morton , Honggyu Kim , linux-mm@kvack.org, mm-commits@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [GIT PULL] Additional MM updates for 6.16-rc1 Date: Tue, 10 Jun 2025 10:32:28 -0700 Message-Id: <20250610173228.49109-1-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: F2792A0002 X-Stat-Signature: y7fixdusgrrism37fwne74kf8bebh9ip X-Rspam-User: X-HE-Tag: 1749576769-959937 X-HE-Meta: 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 pj1Nia1A nEmJR808k6cVzNQIdu0RB6Z8nOtODeQSwwgPEs4JjGPYsnO/a4Lw7fDxSa73M6OXa0Rg+4vSpzGg2AtMLRdisQINEOt9lh1+tR8I+CyGc48zM/QlEwinPEizzOKXnJtRrqPx6tvffdgxn4yE9oyCpBtEYlmbnQJ7LaEa84tCW5oHVIT1UiO7/U2RhiOKxMFKjYXSun/5IT/AHFNywza6IbIJpd2ccUTAdmYiytw651jSA6GqK4ewczPFHoYE+46P+hJ7YbtsDDzPe/oM5cDLdB3gACqU+kM9YbLMx8uoigTTmBlZLTXQ7AMJFsXjjD0fGrYoNI7zCBkKLmGw= 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, 10 Jun 2025 10:27:46 -0700 Linus Torvalds wrote: > On Tue, 10 Jun 2025 at 09:41, Geert Uytterhoeven wrote: > > > > Just revert the commit? > > Yes. We don't do "default y" for random features. > > EVERY SINGLE DEVELOPER thinks that *their* feature is so important > that everybody else should enable it. > > And if that feature wasn't enabled before, they are completely wrong > 99% of the time. > > There is a very real reason why 'default' defaults to 'n'. > > So we do *not* use "default y" for features that aren't universal. > > The only time we should use 'default y' is if some old feature that > used to be unconditional gets split up into a new Kconfig variable and > not using 'default y' means that people *lose* functionality. > > Or if the feature is some critical security thing, or is some hardware > thing that has become so universal that you find it on basically every > single machine. > > Or if that feature cures cancer or brings world peace. > > Then you can enable it by default. > > I have reverted that 'default y' thing, because I see no reason to > believe that DAEMON cures cancer. Makes sense, and thank you for explaining these all. I will keep thse in my mind to avoid making same mistakes in future. Thanks, SJ [...]