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[209.85.218.51]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5cb6696b546sm1257371a12.8.2024.10.20.14.30.59 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 20 Oct 2024 14:31:00 -0700 (PDT) Received: by mail-ej1-f51.google.com with SMTP id a640c23a62f3a-a9a3da96a8aso596776066b.0 for ; Sun, 20 Oct 2024 14:30:59 -0700 (PDT) X-Forwarded-Encrypted: i=1; AJvYcCXvJQdhODcXa/UmLGz8rDUNjsH3mhvICKLqkzustK4/Mf7we/Wf9mqKArj25UkFSWUb00gkGUqUPg==@kvack.org X-Received: by 2002:a17:906:7955:b0:a99:ef65:50e with SMTP id a640c23a62f3a-a9a4c2ed7f6mr1568592766b.11.1729459859390; Sun, 20 Oct 2024 14:30:59 -0700 (PDT) MIME-Version: 1.0 References: <6eo3gekf6twbnzhpsi2emz2s6sgtof6iba2rvbor7himmejoq5@qbfwtpbpvqoe> In-Reply-To: From: Linus Torvalds Date: Sun, 20 Oct 2024 14:30:43 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH] mm: Drop INT_MAX limit from kvmalloc() To: Kent Overstreet Cc: Lorenzo Stoakes , linux-bcachefs@vger.kernel.org, linux-mm@kvack.org, Vlastimil Babka , Andrew Morton , Uladzislau Rezki , Christoph Hellwig Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: kwkzpwywrisijgb8bt8e5esutkd6ifky X-Rspamd-Queue-Id: 213471C001F X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1729459845-778252 X-HE-Meta: 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 p5uVYsww 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000060, 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 Sun, 20 Oct 2024 at 14:29, Kent Overstreet wrote: > > That's the same as limiting the amount of dirty metadata. Exactly. We limit dirty data for a reason. That was what I said, and that was my point. Excessive dirty data is a huge latency concern. It's a latency concern not just for journal replay, it's a latency concern for anybody who then does a "sync" or whatever. Linus